Author: Ryan Brower

Ryan Bower is the owner of Top Flight HVAC in Milton, Delaware. He is an expert HVAC technician and writes about his life on the job and HVAC projects that he has encountered throughout his career.

Fighting Sussex County Pollen: Can Your HVAC System Help?

Written by Ryan Brower on April 3, 2026. Posted in HVAC, Indoor Air Quality. No Comments on Fighting Sussex County Pollen: Can Your HVAC System Help?

If you’ve spent an April morning in Sussex County, you already know what pollen season looks like down here. Yellow-green dust on every car, hazy air over the fields, and, for a lot of homeowners, windows that stay shut from March through May. What’s less obvious is what’s happening inside your home during that same stretch.

Your HVAC system circulates air throughout your home continuously. During pollen season, that means it’s also cycling whatever has made its way indoors through open doors, gaps around windows, and clothing. Whether your system helps filter that air or just moves it around depends largely on what’s inside it.

Your HVAC System and Indoor Allergens

For homeowners dealing with seasonal allergies, the HVAC system is one of the most important factors in determining how comfortable your home feels during peak pollen season. Every time your system kicks on, it pulls air through a filter, conditions it, and pushes it back through your living space. Done right, that process can meaningfully reduce the concentration of airborne allergens indoors.

The problem is that most homes aren’t set up to take full advantage of that. Standard filters, aging equipment, and components that haven’t been cleaned recently can turn your HVAC system from an asset into a liability during allergy season. The good news is that a few targeted upgrades and some basic maintenance can make a significant difference.

3 Ways to Prep Your HVAC System for Spring Pollen

Here are a few simple steps you can take to get your HVAC system ready for Delaware pollen.

1. Upgrade to a High-Efficiency Media Cabinet Filter

Most homes have a basic 1-inch filter installed in their HVAC system. These catch larger particles like dust and debris reasonably well, but pollen grains and mold spores are considerably smaller. A standard filter with a low MERV rating lets a significant portion of those particles pass right through and recirculate through your living space.

Most indoor air quality specialists recommend a minimum of MERV 11 for households dealing with seasonal allergies. The challenge is that standard 1-inch filter slots can’t always accommodate higher-MERV options without restricting airflow. That’s where a media cabinet upgrade comes in.

A media cabinet filter replaces the standard filter slot with a deeper housing that holds a thicker, high-efficiency filter. These systems typically use 4- to 5-inch media filters rated MERV 11 or higher, giving the filter significantly more surface area to capture fine particles without straining the blower. They also last considerably longer than standard filters, often requiring replacement only once a year. For anyone looking for the best air filter for pollen, a media cabinet is one of the most effective options available for a residential system.

2. Install a UV Light for Mold and Biological Contaminants

Pollen gets most of the attention in spring, but mold spores are another common allergen that tends to spike as temperatures and humidity climb. In coastal Delaware, where spring humidity arrives early and sticks around, mold growth inside HVAC components is a real concern.

Evaporator coils and drain pans create a naturally damp environment that mold and bacteria find hospitable. Once growth establishes itself on these surfaces, the system can distribute spores throughout the home every time it runs.

HVAC UV light systems address this directly. These units are installed inside the air handler and use ultraviolet light to neutralize mold, bacteria, and other biological contaminants on coil surfaces before they spread. They run continuously and require little maintenance beyond periodic bulb replacement. For homeowners who deal with allergy symptoms year-round, UV light installation is often one of the more impactful upgrades available.

3. Schedule a Spring Tune-Up Before Pollen Peaks

Even a well-equipped system won’t perform at its best if it hasn’t been maintained. Dirty coils, a clogged condensate drain line, and accumulated debris inside the air handler all affect how cleanly and efficiently your system moves air. A spring AC tune-up gives a technician the opportunity to clean internal components, clear the drain line, and confirm the system is ready to handle the demands of cooling season, including the extra filtration load that comes with high pollen counts.

Other Ways to Reduce Allergens This Spring

Beyond equipment upgrades, a few habits can help reduce allergen levels in your home during peak pollen season.

Replace your air filter at the start of spring, regardless of when it was last changed.
Keep windows closed on high-pollen days, particularly in the morning when counts tend to peak.
Shower and change clothes after spending time outdoors to avoid tracking pollen inside.
Keep an eye on indoor humidity levels, as excess moisture encourages mold growth.

Improving indoor air quality in Delaware homes during allergy season doesn’t require a complete system overhaul. In many cases, a filter upgrade and a seasonal inspection go a long way toward making a home more comfortable for anyone dealing with seasonal allergies.

Let Your HVAC System Work for You This Spring

Spring in Sussex County is short, but pollen season has a way of making it feel long. If your HVAC system is using a basic filter and hasn’t been serviced recently, it may be circulating more allergens than it’s controlling.

Top Flight Heating, Air & Plumbing helps homeowners throughout Sussex County improve indoor air quality with media cabinet filter upgrades, UV light installation, and seasonal maintenance. Contact us to schedule a spring tune-up or to find out which upgrades make the most sense for your home.

The Spring HVAC Startup: Prepping Your AC for a Delaware Summer

Written by Ryan Brower on March 27, 2026. Posted in Air Conditioning, Tips. No Comments on The Spring HVAC Startup: Prepping Your AC for a Delaware Summer

When spring arrives in coastal Delaware, many homeowners flip their thermostats from heat to cool without thinking twice. However, HVAC systems that have been running in heating mode all winter benefit from a seasonal transition check before the first warm days arrive.

To make the seasonal transition easier, our team at Top Flight Heating, Air & Plumbing put together this spring HVAC maintenance checklist. Follow the steps below to help ensure your cooling system is ready for the humidity and heat that Delaware summers bring.

Why Spring HVAC Startup Matters in Coastal Delaware

Homes near the Delaware coast face a unique combination of environmental conditions that can affect HVAC systems. Winter storms often bring wind, salt spray, and sand that settle on outdoor equipment. Over time, this buildup can restrict airflow and corrode exposed components.

Humidity is another factor. As temperatures rise in late spring, moisture levels increase, which can encourage algae growth inside condensate drain lines. If these lines become clogged, the system may struggle to remove condensation properly.

Preparing your system before cooling season begins helps address these seasonal challenges while ensuring your AC runs smoothly when warmer weather arrives.

Your Spring HVAC Maintenance Checklist

This spring HVAC maintenance checklist focuses on issues that are particularly common in Delaware’s coastal climate. With just a few simple inspections and cleaning steps, you can help prepare your system for summer on the coast.

1. Rinse Salt and Sand From the Outdoor Condenser

Winter storms and coastal winds often leave behind salt residue and sand on outdoor HVAC units. Over time, this buildup can restrict airflow and contribute to corrosion.

Cleaning AC condenser coils in the spring helps remove these deposits and restore proper airflow. Using a gentle hose rinse to wash debris from the exterior fins can help prevent HVAC damage from salt air and support efficient cooling performance.

Be careful not to use excessive water pressure, which can bend the delicate coil fins.

2. Inspect the Condensate Drain Line

Condensate drain lines remove moisture produced during the cooling process. In humid climates like Delaware, these lines can develop algae or mold growth that restricts drainage.

Inspecting the drain line during spring startup can help prevent clogs before they lead to water leaks or system shutdowns. Many homeowners also flush the line with a mild cleaning solution to remove buildup and ensure water flows freely.

Keeping this line clear helps your system manage humidity effectively during summer.

3. Clear Debris Around the Outdoor Unit

Outdoor condenser units require unobstructed airflow to operate properly. Leaves, branches, and yard debris can accumulate around the unit during winter.

As part of your spring HVAC maintenance checklist, check that at least two feet of clearance surrounds the condenser. You may even consider trimming nearby vegetation and removing debris to help the system release heat more efficiently.

4. Check Your Thermostat Settings

Switching from heating to cooling season is a good time to review thermostat settings. Confirm the thermostat is set to cooling mode and programmed for your typical spring and summer schedule. It’s also a good idea to update the temperature schedule on a smart or programmable thermostat to balance comfort and energy use as outdoor temperatures rise.

5. Perform a System Test Run

Before the first 80°F day arrives, run your air conditioner for a short test cycle. Turn the system on and allow it to operate for 10 to 15 minutes.

During this test run, watch for a few key signs that the system is operating normally:

You feel cool air blowing steadily from the vents.
You notice consistent airflow throughout your home.
Your outdoor condenser runs smoothly.
You don’t hear any unusual noises or smell strange odors.

A short test run can reveal potential concerns early, allowing time to address them before summer heat arrives.

6. Schedule a Professional Spring HVAC Tune-Up

While a homeowner inspection can help identify visible issues, professional service provides a deeper level of system evaluation. A trained technician can check refrigerant levels, electrical connections, and internal components that aren’t easily accessible.

Scheduling an AC tune-up in Milton, DE, or nearby areas during spring allows technicians to catch developing issues before cooling demand increases. Professional maintenance also includes detailed cleaning and calibration that help systems operate more efficiently during the hottest months of the year.

This type of service is especially valuable in coastal environments where HVAC damage from salt air can affect long-term equipment performance.

Prepare Your AC Before the First Heat Wave

The transition from heating to cooling season is the perfect time to evaluate your HVAC system. Following a spring HVAC maintenance checklist helps your system handle coastal conditions and run more efficiently through the summer.

If your system hasn’t been inspected recently, scheduling a professional AC tune-up can provide additional peace of mind. Our team at Top Flight Heating, Air & Plumbing helps homeowners throughout Sussex County prepare their cooling systems for the demands of summer.

Contact Top Flight Heating, Air & Plumbing today to schedule seasonal maintenance and make sure your AC system is ready before the next warm Delaware afternoon arrives.

Popping Noises? Why Flushing Your Water Heater Is the Only Solution

Written by Ryan Brower on March 2, 2026. Posted in Tips. No Comments on Popping Noises? Why Flushing Your Water Heater Is the Only Solution

If your water heater has started making popping, rumbling, or cracking noises, it’s more than a minor annoyance. In most homes, those sounds point to sediment buildup inside the tank. Over time, that buildup interferes with normal operation and creates conditions that flushing is designed to fix.

In many cases, flushing your water heater isn’t just preventative anymore. It’s the only real way to stop the noise and protect the system from further damage.

Why Is My Water Heater Making Popping Noises?

Popping noises usually come from the bottom of the tank, where sediment collects. As water heats, minerals settle into a layer between the heat source and the water above it. When the burner or heating element turns on, water trapped beneath that sediment heats and forms steam bubbles.

As those bubbles push through hardened mineral deposits, you hear popping or rumbling sounds. The longer sediment is left in place, the more frequent and noticeable the noise becomes.

What Causes Sediment Buildup in My Water Heater?

Sediment buildup is a normal result of heating mineral-rich water. Each heating cycle causes small amounts of calcium and magnesium to fall out of suspension and settle at the bottom of the tank. Without routine water heater flushing, those minerals harden into thick layers over time.

Can I Flush My Water Heater Myself?

You can try a DIY flush. In mild cases, a basic drain-and-refill can help. However, the process isn’t always simple. Sediment can clog drain valves, pressure changes can stress aging components, and heavily scaled tanks often don’t flush cleanly with basic draining alone.

If popping noises have been present for a while, sediment is likely compacted and requires more thorough flushing than most DIY methods provide.

How to Flush Your Water Heater: A Step-by-Step Guide

Flushing your water heater involves more than just opening a valve and letting water drain. The process needs to be done carefully and in the correct order to avoid safety issues or damage to the system.

Before starting, always review your manufacturer’s guidelines and take proper safety precautions. If at any point the process doesn’t go as expected, it’s best to stop and contact a professional.

1. Turn Off the Power or Gas Supply

Before draining the tank, the heat source must be shut down. Electric water heaters should be turned off at the breaker, not just at the thermostat. Gas water heaters should be set to pilot or turned off entirely. This step prevents heating elements or burners from operating while the tank is empty, which can cause serious damage.

2. Shut Off the Cold Water Supply

Once the power or gas is off, close the cold water supply valve feeding the tank. This step stops additional water from entering the system while you’re draining it. Leaving the supply open can interfere with sediment removal and increase pressure inside the tank during flushing.

3. Attach a Hose to the Drain Valve

Connect a garden hose to the drain valve located near the bottom of the tank. The hose should run to a safe drainage area, such as a floor drain or outdoor location that can handle hot water and sediment. Make sure the hose is secured properly to avoid leaks or spills.

4. Open the Drain Valve Carefully

Slowly open the drain valve and allow water and sediment to flow out of the tank. At first, the water may appear cloudy or gritty, which is a sign that sediment is being removed. If the flow slows or stops entirely, sediment buildup may be clogging the valve, which is common in older or poorly maintained systems.

5. Briefly Open the Cold Water Supply

After some water has drained, briefly opening the cold water supply can help stir up remaining sediment inside the tank. This allows loosened debris to flush out through the drain valve. This step may need to be repeated several times to remove as much buildup as possible.

6. Close the Valve, Refill the Tank, and Restore Power

Once flushing is complete and the water runs clear, close the drain valve securely and remove the hose. Turn the cold water supply back on and allow the tank to refill completely before restoring power or gas. Turning the system on too soon can damage heating components.

If drainage is slow, incomplete, or doesn’t improve noise issues, it’s a sign that sediment may be too compacted or that additional problems are present. In those cases, professional service is the safest next step.

How Often Should You Flush Your Water Heater?

For most homes, annual professional water heater flushing is recommended. Homes with harder water or higher usage may benefit from more frequent flushing.

Regular flushing helps prevent sediment from hardening into thick layers, keeps heating elements working efficiently, and reduces strain on the system. Skipping maintenance allows buildup to worsen silently until symptoms like noise, reduced hot water, or system failure appear.

What If DIY Flushing Isn’t Enough?

In some cases, flushing may reduce noise but not eliminate it completely. This usually means sediment has already caused internal wear or damage.

Severely scaled tanks may have compromised heating elements or burner components. Older systems may not recover full efficiency even after flushing. In these situations, a professional inspection can determine whether continued maintenance is worthwhile or if replacement is the safer long-term option.

Ignoring persistent noise increases the risk of overheating, tank damage, and unexpected breakdowns.

When to Call a Professional for Water Heater Flushing

Professional service is recommended if popping noises are loud, persistent, or have been present for an extended period. It’s also a good idea to call for help if your water heater hasn’t been flushed in several years, hot water runs out faster than usual, or energy bills have increased unexpectedly.

A trained technician can safely flush the system, assess sediment levels, and check for related issues that might not be visible from the outside.

Stop the Noise Before It Becomes a Bigger Problem

Popping noises aren’t just a nuisance. They’re an early warning sign that sediment buildup is interfering with how your water heater operates. In many cases, flushing your water heater is the only solution that addresses the root of the problem. But if the problem has escalated, it may be time to schedule professional maintenance.

If you’re unsure whether your water heater needs flushing or professional repair, the team at Top Flight Heating & Air is here to help. Contact us today to schedule water heater service and get your system running quietly and efficiently again.

What Is “Aux Heat” on My Thermostat? (And Why Is It On?)

Written by Ryan Brower on January 30, 2026. Posted in Heating. No Comments on What Is “Aux Heat” on My Thermostat? (And Why Is It On?)

If you own a heat pump in Delaware, few things cause faster panic than seeing “Aux Heat” light up on your thermostat in winter. Many homeowners immediately worry about a sky-high electric bill or assume something is broken.

So, what is aux heat, and should you be concerned when it turns on? In most cases, auxiliary heat is doing exactly what it’s supposed to do. But there are times when it can signal a problem that needs attention.

This guide explains what aux heat means, how it’s different from emergency heat, when it’s normal to see it running, and when it’s time to call a professional.

What Is Aux Heat?

Aux heat, short for auxiliary heat, is a secondary heat source built into most heat pump systems, typically in the form of electric resistance heat strips or a gas or oil furnace in a dual-fuel system.

Heat pumps are very efficient, but when outdoor temperatures drop, they can struggle to pull enough heat from the air. When that happens, your thermostat automatically turns on aux heat to help your system keep your home warm.

Why Does Aux Heat Turn On?

Seeing aux heat doesn’t automatically mean trouble. Here are a few common reasons why it may turn on:

Cold outdoor temperatures: When temperatures dip into the 30s or below, your heat pump may need help maintaining your set temperature.
Large temperature adjustments: Cranking the thermostat up several degrees at once can trigger aux heat to help the system catch up faster.
Defrost mode: Heat pumps periodically reverse operation to defrost ice buildup on the outdoor unit. During this short cycle, aux heat keeps warm air flowing inside.

In scenarios like these, seeing the aux heat turn on is normal and temporary.

Auxiliary Heat vs. Emergency Heat: What’s the Difference?

Many homeowners get confused about the difference between auxiliary heat and emergency heat. However, the two settings are very different.

Auxiliary heat turns on automatically and supports your heat pump when needed. It’s used for short periods during cold weather or in defrost cycles, then shuts off.

Emergency heat, on the other hand, must be turned on manually. Activating emergency heat will shut off your heat pump entirely. With that in mind, it should only be used if your heat pump is broken or covered in ice. Using emergency heat unnecessarily can drive up electric bills quickly, especially during a Delaware winter.

When to Be Concerned About Aux Heat

Aux heat becomes a concern when it’s running too often or at the wrong times. You may have an issue if:

Aux heat runs when it’s 50°F or warmer outside
Your heat pump is running constantly
Your electric bill is unusually high in winter
The system never seems to shut off
Indoor temperatures still feel uneven or your home never gets warm even when the heat is running

These symptoms can point to problems like thermostat issues, low refrigerant, airflow restrictions, or a heat pump that’s no longer operating efficiently.

Does Aux Heat Cause High Electric Bills in Delaware?

Aux heat uses significantly more electricity than a heat pump alone. Short cycles during cold snaps are expected, but frequent or nonstop aux heat operation can absolutely lead to a high electric bill during a Delaware winter.

If your system relies heavily on aux heat, then it becomes less efficient. Energy costs will also rise, and system components will experience increased wear and tear. That’s why proper system performance and thermostat setup matter so much.

How to Reduce Unnecessary Aux Heat Usage

Here are a few ways you can minimize aux heat usage during the winter:

Avoid large thermostat temperature jumps
Keep air filters clean and vents open
Make sure your thermostat is properly calibrated
Schedule regular heat pump maintenance
Address drafts or insulation issues that force the system to work harder

When to Call a Professional for Heat Pump Inspection

You should schedule service if aux heat runs most of the day, turns on in mild outdoor temperatures, coincides with rapidly increasing electrical bills, or appears alongside poor heating performance. A trained technician can determine whether the issue is a simple thermostat fix or a deeper heat pump problem.

Get Peace of Mind This Winter

Seeing aux heat on your thermostat doesn’t have to cause panic. When it’s working properly, it’s simply your system protecting your comfort. But if aux heat seems to run nonstop or your electric bill keeps climbing, it’s time for a professional evaluation.

Call Top Flight Heating, Air, and Plumbing at 302-200-6255 to schedule heat pump repair or winter maintenance services and keep your home warm without unnecessary energy costs.

Frequently Asked Questions About Aux Heat

Read on for answers to some of the most common questions we receive about aux heat.

What is aux heat on a thermostat?

Aux heat is a backup heating source that automatically turns on to help a heat pump during cold weather, defrost cycles, or heavy heating demand.

Is it normal for aux heat to turn on in winter?

Yes. In Delaware winters, aux heat commonly activates during freezing temperatures or while the heat pump defrosts.

Does aux heat mean my heat pump is broken?

Not necessarily. Occasional aux heat use is normal. Constant use may indicate a system issue that needs inspection.

Should I turn off aux heat and use emergency heat instead?

No. Aux heat is controlled automatically and should not be disabled. Emergency heat should only be used if your heat pump fails.

Why You Smell Something Burning When You Turn On the Heat

Written by Ryan Brower on December 24, 2025. Posted in Heating. No Comments on Why You Smell Something Burning When You Turn On the Heat

Turning on your heater for the first time of the season should bring warm air and comfort – not a worrying burning smell. If you’ve noticed an odor when your system kicks on, you’re not alone. Many homeowners experience this, especially at the start of cooler weather.

Sometimes it’s harmless. Other times, it’s a sign your system needs attention. Here’s how to tell the difference, what you can safely check, and when it’s time to call for professional help.

The Most Common (and Often Normal) Cause: Dust Burn-Off

If your heater has been off for months, dust naturally settles on components like the heat exchanger or heating elements. When you turn the system on, that dust burns off, creating a faint burning smell.

What it smells like: dry, dusty, slightly burnt
How long it lasts: a few minutes up to an hour
What to do: let the system run and monitor it

If the smell fades quickly and doesn’t come back, it’s usually nothing to worry about. This is especially common with furnaces and electric heaters during the first cold snap.

Dirty Air Filters Can Make It Worse

A clogged air filter restricts airflow, causing parts of your system to heat up more than they should. This can intensify dust odors or even lead to overheating.

Check your filter if:

The smell seems stronger than usual
Airflow from vents is weak
It’s been more than 1-3 months since replacement

Replacing a dirty filter is one of the simplest ways to improve air quality and protect your system.

Electrical or Plastic Smells: A Warning Sign

If the odor smells more like burning plastic, rubber, or hot wiring, that’s not something to ignore. It may indicate:

Overheated electrical components
Frayed or damaged wiring
A failing blower motor

What to do: Turn off your system at the thermostat and breaker, then call for professional heating repair. Electrical issues can worsen quickly and should be handled by a trained technician.

Debris Inside the System

Over time, small items can find their way into ductwork or near internal components – pet hair, insulation, or even toys. When heat hits that debris, it can produce a burning smell.

This is more likely if:

You’ve had recent construction or remodeling
There are rodents or pests in the area
The smell is localized to one room or vent

A technician can safely inspect and clear the system during a service visit.

Furnace-Specific Concerns

If you have a gas furnace, there are a few smells that deserve extra attention.

Metal or oil-like smell: Can happen with new furnaces or after maintenance. It should fade after a short time.
Strong burning or smoky odor: May point to a cracked heat exchanger, blocked vent, or burner issue. Call for furnace repair right away.
Gas smell (rotten eggs): This is an emergency. Turn off the system, leave the house, and contact your gas company or emergency services before calling an HVAC professional.

Heat Pumps and Burning Smells

Heat pumps can also produce odors at startup, especially during defrost cycles or after sitting idle.

However, persistent smells may be linked to:

Electrical issues
Debris on coils
Motor problems

If you rely on a heat pump and the smell doesn’t clear quickly, it’s time to schedule heat pump repair.

What You Can Safely Do as a Homeowner

Before calling for service, a few basic steps can help:

Replace the air filter if it’s dirty.
Check vents and returns for visible debris.
Run the system for 15-30 minutes if you suspect dust burn-off.
Turn it off if the smell is strong, chemical, or getting worse.

Do NOT open panels, touch wiring, or try to clean internal components. That’s best left to professionals.

When You Should Call a Professional

Schedule service if:

The smell lasts longer than an hour
It comes back every time the heater runs
It smells like plastic, rubber, or wiring
You notice smoke, sparks, or strange noises
Your system shuts off or won’t heat properly

Ignoring these signs can lead to bigger repairs or safety risks.

Routine HVAC maintenance is one of the best ways to prevent these issues by keeping components clean, checking electrical connections, and catching problems early.

Don’t Ignore What Your Heater Is Telling You

A brief dusty smell can be normal, but persistent or unusual burning odors are your system’s way of asking for help. Paying attention now can prevent breakdowns and keep your home safe and comfortable all winter.

If you’re unsure what you’re smelling, Top Flight is here to help. Call 302-200-6255 to schedule a heating inspection or repair in Milton, DE. Our team will find the cause and make sure your system is running safely and reliably.

The Heat’s On but the House Never Gets Warm – What’s Wrong?

Written by Ryan Brower on December 1, 2025. Posted in Heating. No Comments on The Heat’s On but the House Never Gets Warm – What’s Wrong?

When you turn on the heat, you expect your home to respond quickly. But if the furnace is running and your house still feels cold, or only certain rooms warm up, it’s a sign something isn’t working the way it should. For Milton homeowners, this issue becomes especially noticeable when temperatures swing from mild days to chilly nights and your heating system struggles to keep up.

Below, we break down the most common reasons your home won’t warm up, how to troubleshoot them, and when it’s time to call Top Flight Heating & Air for professional heating repair.

1. Your Furnace Isn’t Producing Enough Heat

Even if the system turns on, it may not be generating the heat needed to warm your home.

Common causes include:

Dirty burners: Dust buildup can prevent burners from igniting properly.
Failing heating elements (electric furnaces): If one element goes out, heat output drops.
Weak pilot light or faulty ignition: Gas systems may fire inconsistently, leaving you with lukewarm air.

If your furnace runs constantly but the air coming from the vents isn’t hot, this is one of the first areas a technician will check.

2. Your Thermostat Isn’t Communicating Correctly

A thermostat issue can make it look like your system is malfunctioning when the real problem is inaccurate readings.

You may notice:

The thermostat shows the wrong temperature
The system short-cycles or runs non-stop
The heat never reaches the temperature you set

Sometimes this is as simple as a dying thermostat battery. Other times, the device may be miscalibrated or nearing the end of its life.

If upgrades are needed, Top Flight can install a smart thermostat that better regulates temperature and improves your comfort.

3. Airflow Problems Are Preventing Warm Air From Reaching Rooms

Your furnace can work perfectly – and yet your home stays cold – if warm air isn’t traveling freely.

Check for these airflow issues:

Clogged air filter: A dirty filter restricts airflow, making it difficult for warm air to move through your duct system.
Blocked or closed supply vents: Furniture, rugs, or intentionally closed vents reduce circulation and throw off temperature balance.
Leaking or disconnected ductwork: This is extremely common, especially older properties. Warm air escapes into attics, crawlspaces, or wall cavities, leaving rooms cold no matter how long the furnace runs.

If you suspect duct issues, schedule a professional duct inspection. Top Flight also offers duct sealing to restore airflow and efficiency.

4. Your System Is the Wrong Size for Your Home

A furnace that is too small will run constantly without ever meeting the thermostat’s demand. One that’s too large will short-cycle, leaving rooms feeling uneven and uncomfortable.

Signs of an improperly sized system:

Hot and cold spots throughout the home
Very long run times
Rising energy bills
Loud on/off cycling

If your system has always struggled to heat the home, especially after a remodel or addition, sizing is worth investigating.

5. Heat Loss Is Outpacing Heat Supply

Sometimes the heating system isn’t the problem; your home is.

Common heat-loss culprits:

Poor insulation in attics or crawlspaces
Original single-pane windows
Gaps around doors
Unsealed attic hatches or recessed lighting

When heat escapes faster than your furnace can replace it, rooms feel cold even when the system is running. A professional energy assessment can identify these issues and recommend fixes.

6. The Furnace Is Aging or Failing

If your heating system is 12-20 years old, a drop in performance is expected. Older furnaces lose efficiency, produce less heat, and often require more frequent repairs.

You may notice:

Noisy operation
Uneven heating
Slow warm-up times
Higher utility bills
Frequent cycling

If repair costs are stacking up, Top Flight may recommend reviewing furnace replacement options that improve comfort and efficiency.

DIY Checks Before Calling a Technician

Before scheduling service, try these quick steps:

Replace the air filter
Make sure vents are open and unobstructed
Verify thermostat settings and replace batteries
Check for tripped breakers
Ensure the furnace switch is turned on

If these don’t help, or the furnace still won’t heat properly, it’s time for professional troubleshooting.

When to Call Top Flight Heating & Air

Any of the following symptoms mean your system needs expert care:

Furnace runs continuously without warming the home
Rooms heat unevenly
Your system struggles more at night or in colder weather
You hear new noises (booming, scraping, rattling)
You smell gas or burning odors

A technician can diagnose the issue, restore proper operation, and help prevent a complete breakdown during peak winter demand.

Restore Comfort With Professional Heating Repair

A home that won’t warm up is a sign your system needs attention. Top Flight Heating & Air provides reliable heater repair, duct services, and full system diagnostics to keep your home comfortable during Sussex County’s colder months.

If your heater isn’t keeping up, call 302-200-6255 to schedule your heating repair today.

Do You Hear Popping or Banging From Your Air Ducts? Here’s What to Know

Written by Ryan Brower on October 31, 2025. Posted in Ductwork. No Comments on Do You Hear Popping or Banging From Your Air Ducts? Here’s What to Know

You’re sitting at home, enjoying a quiet evening, when your HVAC system turns on and suddenly you hear a loud popping or banging noise echoing through the vents. It’s enough to make anyone wonder if something is seriously wrong.

The good news is that these sounds are fairly common and don’t always mean a major problem. However, they can signal that your air ducts or HVAC system needs some attention. Understanding the cause is the first step toward fixing it and protecting your system’s efficiency.

Here’s what could be behind that noise and what you can do about it.

Why Your Ducts Make Popping or Banging Noises

In most cases, those popping or banging sounds are caused by thermal expansion. When your furnace or heat pump kicks on, warm air begins moving through the cold metal ducts. As the metal warms up, it expands slightly, and when it cools down after the system turns off, it contracts.

That expanding and contracting can cause panels of metal to flex, creating the familiar pop or bang you hear. While a small amount of noise is normal, frequent or very loud sounds may mean your ducts aren’t properly sized, supported, or installed.

Common Causes of Noisy Ductwork

1. Undersized or Poorly Designed Ducts

If the ducts are too small for the amount of air moving through them, pressure builds up when your system turns on. This pressure can force the duct walls to flex or “oil can,” producing sharp popping or banging noises.

An HVAC professional can evaluate your duct design to ensure the airflow matches the system’s capacity. In some cases, duct repair or replacement may be necessary to correct the problem.

2. Thin or Weak Duct Material

Some homes have ducts made from thinner metal, which is more likely to flex when the temperature changes. Reinforcing the ductwork or adding additional supports can reduce movement and noise.

3. Sudden Air Pressure Changes

If the blower starts or stops abruptly, it can cause the pressure inside your ducts to shift quickly, resulting in a loud pop. This may happen if your system’s blower speed or dampers need adjustment.

Regular HVAC maintenance can help identify and correct these airflow issues before they lead to louder noises or system strain.

4. Closed or Blocked Vents

When too many vents are closed, it restricts airflow and increases pressure inside the ducts. This extra pressure can make the metal expand more forcefully. Make sure at least 80% of your vents are open and unobstructed to allow even air distribution throughout your home.

5. Loose Connections or Mounting Points

If a section of ductwork isn’t secured properly, it may shift slightly as air moves through it. This movement can cause knocking or rattling sounds. Tightening fasteners, adding insulation, or adjusting hangers can often fix the issue.

When the Noise Might Signal a Bigger Problem

While some sounds are harmless, there are times when duct noise indicates a larger issue that needs professional attention. You should schedule an inspection if you notice:

Loud banging every time your system turns on or off
Uneven airflow or weak air pressure from vents
A burning or musty smell along with the noise
Increased energy bills or longer run times

These could point to problems like duct leaks, a failing blower motor, or pressure imbalances in your system. Leaving them unresolved can reduce your system’s efficiency and shorten its lifespan.

How to Reduce or Eliminate Duct Noises

Here are some steps you can take to minimize duct noises and protect your HVAC system:

Schedule a professional inspection. An experienced technician can check for airflow restrictions, loose connections, or improper duct sizing.
Keep vents open and unblocked. This helps maintain balanced airflow throughout your home.
Replace air filters regularly. Dirty filters restrict air movement and increase pressure inside the system.
Add insulation or duct supports. Extra insulation can dampen sound, while added supports prevent flexing and movement.
Upgrade older ductwork. If your ducts are thin, outdated, or poorly sealed, replacement may be the most effective solution.

Regular maintenance and duct inspections are the best way to catch small problems early and keep your system running quietly and efficiently.

When to Call a Professional

If you’ve tried basic fixes and the popping or banging persists, it’s time to call the experts at Top Flight Heating & Air. Our technicians will inspect your ductwork, measure static pressure, and check for loose or undersized components.

In many cases, a few small adjustments, such as securing ducts, adjusting airflow, or cleaning your system, can make a big difference. But if your system needs more significant repairs, we’ll recommend the most cost-effective solution to restore comfort and quiet to your home.

Call Top Flight Heating & Air at 302-200-6255 or contact us online to schedule your ductwork inspection today.

High Humidity in Coastal Homes: Is Your HVAC Making It Worse?

Written by Ryan Brower on September 30, 2025. Posted in Indoor Air Quality. No Comments on High Humidity in Coastal Homes: Is Your HVAC Making It Worse?

Coastal living has plenty of perks, but one drawback is the constant battle with humidity. In places where the air is often heavy with moisture, indoor comfort depends on more than just temperature. High humidity makes your home feel warmer than it is, causes musty odors, and can even damage furniture and flooring over time.

Many homeowners expect their HVAC system to take care of excess moisture, but in some cases, the system itself may be contributing to the problem.

Why Coastal Homes Face Unique Humidity Challenges

Coastal air is naturally more humid because of its proximity to large bodies of water. Every time you open a door or window, that moisture enters your home. Even well-sealed houses aren’t immune, since small leaks in ductwork or gaps in insulation let damp outdoor air creep inside.

Your HVAC system can help, but it isn’t always designed to handle humidity control on its own. A system that cools air quickly without running long enough to pull out moisture may leave your home feeling clammy instead of comfortable.

What Indoor Humidity Should Be

One of the most important things to know is what “normal” humidity looks like indoors.

Ideally, your home should stay between 30 and 50 percent relative humidity. Below that range, the air feels too dry, leading to irritation and static. Above that range, you may see condensation on windows, peeling paint, and even mold growth.

In many coastal homes, humidity levels easily creep above 60 percent during summer months. If your home often feels sticky even when the thermostat is set low, your HVAC system may not be keeping up.

How Your HVAC Could Be Making Humidity Worse

While HVAC systems are meant to cool and dehumidify, several common issues can cause them to push moisture back into your home.

Oversized Systems

A system that’s too large cools air quickly and shuts off before enough moisture is removed. This leaves you with a cold but damp environment.

Poor Maintenance

Dusty air filters, dirty coils, or clogged drain lines all reduce your system’s ability to pull water out of the air. Without regular maintenance, performance drops and humidity rises.

Leaky Ductwork

If ducts run through humid crawl spaces or attics, they can pull damp air inside. That moisture then circulates throughout your home.

Incorrect Fan Settings

Leaving your fan set to “on” instead of “auto” can cause condensed moisture on the coils to re-evaporate and move back into the living space.

Signs That Humidity Is Too High in Your Home

Homeowners often ask how to know when indoor humidity is excessive. There are several clear indicators to watch for, including:

Condensation forming on windows, especially in the morning or when the AC is running
Musty or damp odors that linger in certain rooms
A sticky or clammy feeling on your skin even with the air conditioner on
Furniture that begins to warp or show signs of moisture damage
Flooring that buckles or separates over time
Increased allergy or asthma symptoms linked to poor indoor air quality

If you notice one or more of these issues, your indoor humidity is likely above the recommended range, and your HVAC system may not be keeping up.

Does Running the AC Longer Help?

While cooling cycles do remove moisture, relying solely on extended runtimes is not the best approach. Overuse of your air conditioner can drive up energy bills, add wear and tear to the system, and still fail to deliver balanced humidity control.

The real solution is ensuring your system is the right size, properly maintained, and supported by additional equipment if needed. This is where whole-home dehumidifiers or upgraded HVAC units designed for coastal climates can make a significant difference.

Solutions for Managing Humidity in Coastal Homes

The good news is that homeowners have reliable options for taking control of indoor humidity:

Regular HVAC maintenance to keep coils clean, filters fresh, and drain lines clear so the system can remove moisture effectively
Sealing ductwork and air leaks to prevent humid outdoor air from being pulled into the system and circulated throughout the home
Installing a whole-home dehumidifier to provide precise control and keep indoor humidity between 30 and 50 percent year-round
Replacing outdated or oversized equipment with a properly sized system that balances both cooling and dehumidification for lasting comfort

These solutions not only improve indoor comfort but also protect your home from long-term damage caused by excess moisture.

Stay Comfortable with Professional Help

High humidity in coastal homes doesn’t have to be an ongoing frustration. With the right adjustments, your HVAC system can keep both temperature and moisture levels in check. If your home feels clammy, sticky, or musty even with the air conditioner running, it may be time to have your system inspected.

The team at Top Flight Heating & Air offers expert air conditioning services that address both cooling and humidity issues. Whether it’s maintenance, repair, or system upgrades, we’ll help you create a home that feels truly comfortable year-round.

Call Top Flight at 302-200-6255 today to schedule service and take control of your indoor humidity.

Can Your AC Make Your Home Too Cold?

Written by Ryan Brower on September 3, 2025. Posted in Air Conditioning. No Comments on Can Your AC Make Your Home Too Cold?

Air conditioning is a lifesaver during hot summers, but sometimes homeowners notice their house feels uncomfortably chilly – even when it’s set to a reasonable temperature. So, can your AC make your home too cold? The short answer is yes. And when it does, it may point to bigger issues with efficiency, system performance, or thermostat settings.

In this guide, we’ll explain why an air conditioner might overcool your home, what that means for your comfort and energy bills, and how to fix the problem before it leads to wasted money or unnecessary wear on your system.

Why Does My AC Make My Home Too Cold?

When your AC runs properly, it should cycle on and off to keep your home at a steady, comfortable temperature. If your home feels too cold, some common causes include:

Thermostat issues: If the thermostat is placed near vents or in direct sunlight, it can misread your home’s actual temperature.
System size mismatch: An oversized AC can cool your home too quickly, which can result in uneven temperatures or overcooling.
Continuous running: Problems with wiring, relays, or controls can cause your AC to run nonstop, dropping the temperature lower than you want.
Clogged air filter, blocked vents, or poor ductwork: Restricted airflow can confuse the thermostat, forcing the AC to run longer and overcool your home.

What Temperature Should I Set My AC To?

Experts typically recommend keeping your thermostat around 78 in the summer for comfort and efficiency. Setting it much lower can not only make your home too cold but also drive up utility bills.

If your home still feels chilly at a higher setting, your system may be over-performing or running longer than needed. This is often a sign your AC could benefit from a professional AC maintenance check.

Can an AC That Overcools Increase Energy Bills?

Yes. While it may feel nice at first to have a cold house, overcooling means your system is working harder than it needs to. That can result in:

Higher monthly energy bills
Faster wear and tear on components like compressors and fans
More frequent need for AC repair
A shorter lifespan for the entire unit

In short, if your AC is overcooling, you’re paying for more cooling than you actually need – and potentially facing bigger repair bills later.

Is It Bad for My Health If My Home Is Too Cold?

A chilly house can affect your health, too. Indoor temperatures that are too cold can lead to:

Dry skin and irritated sinuses
Increased allergy symptoms if your ducts are damp and overcooling encourages mold
Difficulty sleeping, since extreme cold can disrupt natural rest cycles

For households with young children or older adults, excessively cold air can also increase risks of colds and respiratory irritation.

How Do I Stop My AC From Making My Home Too Cold?

If your AC is cooling more than it should, there are several solutions:

Check thermostat placement and settings. Make sure it isn’t near vents, windows, or appliances that create false readings.
Schedule seasonal maintenance. A professional can check if refrigerant levels, controls, or ductwork are causing your AC to run too long.
Consider upgrading your thermostat. Smart thermostats can better regulate cooling cycles and prevent overcooling.
Have your system size evaluated. If your AC is oversized for your home, you may need adjustments or, in some cases, replacement for optimal comfort.

A trusted HVAC technician can help pinpoint whether it’s a simple fix or a larger system issue.

Should I Replace My AC If It’s Overcooling?

Not always. In many cases, recalibrating your thermostat, sealing ducts, or performing routine tune-ups can solve the problem. However, if your system is oversized or older than 12-15 years, you may want to consider AC replacement.

Replacing with a properly sized, energy-efficient unit ensures your home stays comfortable without wasting energy or leaving you shivering in the summer months.

When to Call a Professional

If you’ve tried adjusting your thermostat and your AC still leaves your home too cold, it’s time to bring in a professional. A credible HVAC technician can inspect your unit, ductwork, and thermostat to identify the issue and recommend the right solution.

At Top Flight Heating & Air, we provide expert air conditioning services to help homeowners stay comfortable while keeping energy costs under control. Whether you need maintenance, repairs, or a new system, our team is here to help you find the best solution for your home.

Keep Your Comfort in Balance

Yes, your AC can make your home too cold, but that doesn’t mean you’re stuck with uncomfortable cooling. From thermostat adjustments to system upgrades, there are solutions to keep your home at the perfect temperature without sacrificing efficiency.

Call Top Flight Heating & Air today at 302-200-6255 or schedule service online to keep your AC running at its best.

Is My AC Too Old to Keep Fixing?

Written by Ryan Brower on July 31, 2025. Posted in Air Conditioning. No Comments on Is My AC Too Old to Keep Fixing?

If your air conditioner has been struggling to keep up, and your HVAC technician is starting to feel like a regular guest, it’s natural to wonder: is my AC just too old to keep fixing?

There’s no one-size-fits-all answer, but there are a few key signs that point toward replacement over repair.

At Top Flight Heating & Air, we help Sussex County homeowners make smart, long-term decisions about their home comfort. Here’s how to know when it’s time to stop patching up your old AC and consider a new, more efficient system.

How Long Should an AC Last?

On average, central air conditioners last 12 to 17 years, depending on maintenance, usage, and brand. Systems in coastal or high-humidity areas (like here in Delaware) often wear out a little faster due to salt air and corrosion.

If your unit is 10+ years old, it doesn’t automatically need to be replaced – but you’ll want to pay closer attention to performance, energy bills, and repair frequency.

Signs You’re Spending Too Much on AC Repairs

Occasional repairs are normal, especially as your system ages. But if you’re constantly scheduling service or replacing major components, your money might be better spent on a new unit.

Watch for:

Frequent breakdowns: More than once or twice per season is a red flag.
High repair bills: If a repair costs 25–50% of a new system, it’s usually not worth it.
Uneven cooling: Older systems often struggle to cool your whole home evenly, especially if ducts or insulation are also aging.
Noisy operation: Loud humming, rattling, or clicking could signal failing parts.
Rising energy bills: Efficiency drops over time, even if the system still “works.”

Does It Use R-22 Refrigerant?

If your AC was installed before 2010, it might still use R-22 refrigerant (also called Freon), which was phased out due to environmental concerns. R-22 is no longer being produced, which makes it expensive and hard to find.

If your system needs a refrigerant recharge and it runs on R-22, that’s a strong sign it’s time to consider replacement.

When Repairs Make Sense

There are still times when a repair is the right choice, especially if:

Your unit is under 10 years old
This is its first or second issue
The repair is minor (like a capacitor or thermostat)
The system has been well-maintained

Regular maintenance, like seasonal tune-ups and filter changes, can help extend the life of your system and reduce surprise issues.

Why Replacement Might Be the Smarter Move

While replacing your AC might feel like a big investment upfront, it often pays off long-term in comfort and efficiency.

Modern AC systems:

Use less energy to cool your home
Improve indoor air quality
Operate quieter
Include better warranties and smart controls
Qualify for rebates or energy incentives

And if your current system is mismatched to your home’s needs – too large, too small, or poorly installed – a replacement gives you the chance to fix those issues for good.

Let’s Talk About Your Options

Still not sure if it’s time to replace? At Top Flight, we’ll never push you to upgrade before it’s necessary. Our team is here to give honest advice based on your home, your budget, and your long-term comfort goals.

Whether you’re looking for a second opinion, want a free estimate, or just need help deciding if that next repair is worth it, we’re here to help.

Contact us today to schedule an AC inspection and get the peace of mind you deserve.