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335+ Google 5 Star Reviews
Your Trusted Heating & Air Conditioning Company
Serving Sussex County, DE and The Surrounding Areas
About Us

Milton’s #1 Heating & Air Conditioning Contractor


Home heating and air conditioning may be relatively modern inventions, but we’re all guilty of taking indoor climate control for granted here and there. It’s easy to forget how much you rely on your heating and air conditioning unit until something goes wrong, and all of a sudden, your HVAC equipment becomes more of a burden than a benefit.

Get your system back up and running again with professional help from Delaware’s number-one heating and cooling company! Top Flight Heating & Air is the top residential AC service company in Sussex County, DE, with over a decade of experience providing HVAC services throughout Delaware.

At Top Flight Heating & Air, we take pride in being the best HVAC company in the Sussex County area. Our skilled, professional technicians offer routine HVAC maintenance services, same-day service for emergencies, and many other services for your HVAC equipment.

Customer Reviews
We’re Soaring To The Top Of The Charts!

  • The best part of the experience was Ryan’s knowledge and responsiveness. He answered all our questions in a courteous, professional, and timely way, and provided a competitive estimate. Isiah and Michael did the installation, and were fast, on time, and thorough.

    -Randy F.
  • “Isaiah and Mike did a great job! Both were very courteous and professional. Ryan showed up with some needed supplies and was also the same. Our airflow problems were fixed and we have a noticeable difference in our system’s operation. Highly recommended.”

    -Rick H.
  • “My technician Isaiah Barnes was punctual, polite, and professional. He answered all of my questions, and got my AC up and running. He even stopped back two weeks later to verify if the repairs he made solved the problem. Highly recommended.”

    -Thomas W.
  • I had a fantastic experience with this company, and I want to give a special shoutout to technician Michael. He recently replaced my HVAC filter, and I was thoroughly impressed with his professionalism and expertise. Quick service, and my system is running flawlessly. Highly recommend this company, especially thanks to Michael!”

    -Daniel B.
  • Shout out to Top Flight Heating and Air conditioning. Sunday we had no air conditioning and by Tuesday morning we were up and running. Michael and Ryan were very professional and on time. Love the quick response and communication with us, text and emails.
    Supporting Local! Would highly recommend.”

    -Robert H.
  • This whole experience was awesome! Ryan came on time, fixed every issue we had, and explained to us everything. We are first home buyers so the issues we’ve had to learn the hard way due to previous owner. Everything was fixed and we already felt a difference before he even left. Overall 10/10.”

    -Kayleigh E.
    Maintenance Membership
    For service that soars — you need Top Flight! Become a member

    If you’re a homeowner, you know how important it is to have routine AC and furnace maintenance to keep your living space comfortable year-round — or else you may end up with a costly catastrophe on your hands.

    But sometimes, it can be difficult to stay on top of all the complicated maintenance tasks needed to keep your heating and air conditioning system working efficiently, and that’s where Top Flight Heating & Air comes in! 

    Our HVAC maintenance service in Milton, DE, is designed to make it easy and convenient for homeowners to take proper care of their HVAC systems with regular maintenance visits from our experienced technicians. With a maintenance membership from Top Flight, you’ll enjoy priority service, peace of mind, cost savings, and so much more.

    Join today and save 15% off on all service repairs!

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    Contact Us
    Nila W Taylor
    Nila W Taylor
    1739632667
    Excellent service, timely, knowledgeable, honest and everyone is so very pleasant to work with... highly recommend.
    Brian McLaughlin
    Brian McLaughlin
    1738792843
    We can't not be happier with our first experience with Top Flight .Local company near our house .We did a yearly membership and now have piece of mind for our Hvac units .Kudos Top Flight !!!!!
    John Collier
    John Collier
    1738779272
    Great company even if they are named after a golf ball
    Ian Magin
    Ian Magin
    1738018756
    Called Top Flight as a new customer on one of the coldest days of the year. They got me scheduled quickly and were at my house before the quoted time. Their tech Tom did a great job diagnosing the issue and went above and beyond to get my heat back that day! Couldn't have been happier!
    Sandy Sard
    Sandy Sard
    1737894086
    Ryan came out to our house to give us a second opinion regarding our hvac system.. 2 times in the past 6 months our heat has gone out and the house is not even a year old as of yet.. gave the system a complete look over.. when warranty is up we will be contacting Ryan and his company to service our hearing and air conditioning.. You and your company have our trust! Thank you!
    Eleanor Refsnider
    Eleanor Refsnider
    1737493357
    Isaiah, the service technician was on time, courteous and very helpful. I will enjoy being a customer of Top Flight in the future.
    No One
    No One
    1737326493
    Brian Gourlay
    Brian Gourlay
    1736536654
    Evan Lallier
    Evan Lallier
    1735843476
    The technicians came when they said they would. They were polite and diagnosed the problem quickly. They made the repair when the needed part came in
    Tricia Ecker
    Tricia Ecker
    1735734936
    We called Top Flight on Christmas Eve expecting to wait a few days for service. The phone number went straight to a REAL person who was pleasant, friendly, and had someone at our house within 3.5hrs. Our technician was also friendly and knowledgeable. He made a thorough assessment of our system and fixed the issue in the expected time frame. I highly recommend Top Flight to anyone looking for service and will definitely be using them in the future!
    Kevin Jester
    Kevin Jester
    1735587430
    Steve Berlin
    Steve Berlin
    1735356080
    Service was quick, courteous, and friendly. Not always easy to get things done quickly in LSD.
    Chris Burkhart
    Chris Burkhart
    1735060861
    Got our heater rolling again on Christmas Eve Day when it went out and we had a 40 degree house with family on the way in to town. Local, independent business that does great work.
    Debra Queitsch
    Debra Queitsch
    1735033200
    We have been a Top Flight client for several years now. Top Flight offers an excellent service plan and exceptional customer service. Their technicians are very knowledgeable, courteous and take their time explaining any issues they may see presently or in the future. No hard core selling. Service calls are always timely.Their automated system provides you with accurate information for your technicians arrival. More often than not, their trucks carry a great inventory of parts, should you need any replacement items during their visit. An honest company with ethical, dedicated employees.
    Monique Palmer
    Monique Palmer
    1734984123
    I called to schedule an appointment for a technician to come out. Ryan was able to come the same day, about 4hrs later. He was very professional super polite n knew what he was doing. I wasn't receiving any heat n he was able to determine what the issue was n resolve it. I couldn't be happier. Definitely recommend this company to anyone who's having any problems with HVAC system.
    Donna Smith
    Donna Smith
    1734401707
    Top Flight did an awesome job replacing my whole HVAC system, including duct work. Ryan did a very thorough initial inspection of my old unit which allowed him to make the best recommendations for the issues I was having. They were prompt, courteous and explained in detail everything they were doing during installation. Everything was cleaned up well after the job and I appreciate how quickly they were able to get me scheduled. I highly recommend Top Flight for any of your HVAC needs.
    Daniel Webster
    Daniel Webster
    1734393180
    On-time and professional.
    Robert J Russell
    Robert J Russell
    1734103551
    Isaiah was a pleasure to work with.Very courteous and professional. He explained everything in clear, understandable language.I would highly recommend Isaiah and Top Flight.
    Vincent Griscavage
    Vincent Griscavage
    1733954963
    Prompt, competent and professional. Shoe covers are a plus.
    Belinda Kalomeris
    Belinda Kalomeris
    1733782335
    Professional and knowledgeable heat and ac company. Family operated company with family oriented values. Top flight saved the day for me when the company I originally hired to install my new ac central unit took off without completing the job. Top flight stepped right in, corrected and finished the job just as the weather was heating up. They also have improved the way I heat my house. Best heat/ac company I have ever worked with while owning many homes throughout the years. Thank you Top Flight!
    Joe Begendorf
    Joe Begendorf
    1733609551
    Larry Daisey
    Larry Daisey
    1733582624
    Technicians are friendly, knowledgeable and very thorough.
    Nadine
    Nadine
    1733434914
    Tyler and partner were amazing. Very professional and explained things so I could understand. Would recommend for HVAC services
    Noelle Sylvanus
    Noelle Sylvanus
    1733399880
    We have been using Top Flight for several years now. Ryan and his team have always gone above and beyond to make sure our system is running properly. They respond to any problems we have in a timely manner. They offer great customer service and are very professional. I have trust in their work. Rates have always been reasonable.
    Carol Cunneen
    Carol Cunneen
    1733333426
    Tyler arrived on time and did a thorough examination of the system. He was polite, professional and pleasant. He explained to me everything about the system I highly recommend this service.
    Janet Brennan
    Janet Brennan
    1733265089
    The other day, when temperatures were in the teens, I woke up to 54 degrees in my house. I went on line to look up HVAC services and saw that Top Flight had many excellent reviews. So I called them. A couple of hours later, Isaiah and Tyler came to my house. I have to say that it was one of the best experiences, if not the best, that I have ever had with a contractor or service person. They were here all day. Isaiah explained everything to me in detail and encouraged me to ask questions. He was so patient and so nice. Of course, they fixed the problem and gave me some good advice. He was very professional but easy going and well-informed. Also, the prices are very reasonable. I highly recommend this company.
    Glenn Hodges
    Glenn Hodges
    1733182779
    Isaac serviced my ductless system in my sun room. The system was heating but was inconsistent in response to temperature changes. Isaac cleaned the inside unit and that seems to have improved how it works. He was on time and worked professionally.
    george donahue
    george donahue
    1733065023
    Absolutely top notch. Technician found problem, explained what had to be done in detail. Exceptionally polite and courteous. If your looking for down to earth people, this is the place. No hassle whatsoever.
    Wanda Steen
    Wanda Steen
    1733006338
    We were going through a total nightmare trying to find a company to fix our HVAC system. We tried 3 different companies that took our money and left us with a system that would stop working within a month after they said it was fixed. Top flight found the problem the 1st time they looked at it. It's now been running for almost a year with no problems. Isiah and this company are the best. We highly recommend them. Thank you Top Flight.
    Gillian Daniels
    Gillian Daniels
    1732804747
    I Highly recommend Top Flight! I called for service at the beginning of the cooling season. Technician came on time, inspected and cleaned the main two heat exchanger zones, checked all the return filters, measured the temp at each supply output and then inspected and cleaned a mini split. He took his time but was really efficient, thorough, clean and knowledgeable. Had great air conditioning all summer! I signed up for their service plan and will be scheduling our heating/fall call after Thanksgiving.
    John Zivkovich
    John Zivkovich
    1732740721
    Top notch service from a first rate company- Ryan and his crews are honest and polite and very knowledgeable. We’ve been very happy with the work performed.
    George Bock
    George Bock
    1732726145
    Cleaned and rehabilitated my heater. They arrived on-time, two people worked on the unit, very nice and polite. They even showed me pictures of all the work they did on the unit.
    Diane Acker
    Diane Acker
    1732714580
    A used Top Flight Heating & Air to replace my furnace. I was very satisfied with their knowledge and professionalism. I now use them for all preventive maintenance on both my heating and air-conditioning units. Their prices are very reasonable, and they are quick to response to calls.
    Gregg Goins
    Gregg Goins
    1732637386
    Top Flight is a Great Company. We are very happy with there Professionalism and Courtesy. They always Call before And after they do their check up. Everyone we have had come to the house has been very Informative and Nice a d always ask if they can do anything else. So Nice
    Michelle Phillips
    Michelle Phillips
    1732634351
    Reliable, affordable, and on point! Had issues with my air conditioning for years, after spending thousands with multiple other companies, I found Top Flight! One visit and everything was working perfectly! The only company I'll trust with my heating and A/C needs! Highly recommended!Thank you for superb service!Michelle Phillips
    Linda Egbert
    Linda Egbert
    1732590023
    Ivory Hopkins
    Ivory Hopkins
    1732562738
    I was very pleased with Top Flights' service. They installed Heating and Air Units in my church, Pilgrims Ministry of Deliverance, in Georgetown, Delaware.I needed service. They sent a serviceman named John. He got everything up and running. HAPPY CUSTOMER!Apostle Dr. Ivory Hopkins
    Steph Staib
    Steph Staib
    1732290192
    Top notch service! Professional and friendly staff.
    Walter Plum
    Walter Plum
    1732227217
    Great service from knowledgeable technicians.
    Alex Cruz
    Alex Cruz
    1732043643
    These guys are absolutely incredible. From the customer service to the technicians, everyone is friendly and goes above and beyond to help. I know when they come out, they’re going to do an amazing job and provide me with tips and tricks to get the most out of my unit.
    Sheri Deeb
    Sheri Deeb
    1732040422
    THE BEST!! If you live in lower Delaware you should be using Top Flight Heating & Air for all your needs!
    C M
    C M
    1732028165
    Exceptional service! Reliable, knowledgeable, professional and courteous. Would highly recommend!
    Diane
    Diane
    1732024425
    Top Flight is exactly that! Tyler Powell was the technician sent to maintain my very old furnace. He was professional, informative and personable! He let me know what to expect from the furnace and I was pleased with his evaluation. There was no upselling. He, with the owner Ryan, came up with 7 quotes for different brands and efficiencies of furnaces that I requested.The ladies in the office did everything they could to fit me in the schedule! I was so happy with their service and honesty!
    Glenn Williams
    Glenn Williams
    1731962093
    Excellent service
    Julia Moore
    Julia Moore
    1731946127
    Excellent service! Technician explained everything he was doing, and what I may need down the road as I have an older unit. I feel really great about signing up for the maintenance program!!!
    Diana Lucas
    Diana Lucas
    1731945432
    Shout out to Top Flight Heating snd Air Conditioning!! Same day appointment and work completed with excellent technician Tyler!! Hes the best!! Thank you so much for your timely assistance and knowledgability to diagnose and repair so promptly!!5 STARS Tyler!! Cant thank you enough!👍👍👍
    Cathy Grosholz
    Cathy Grosholz
    1731878115
    I have used this company for about 3 years now. Not only is their customer service excellent but so is their prompt service. Get the service plan, it’s well worth it. Have already recommended them to my friends who have also signed up. This company knows what they are doing!!
    wayne waybright
    wayne waybright
    1731861647
    I have Top Flight Heating & Air do my annual maintenance on both my central A/C inside the main house and the Mitsubishi A/C unit in our sunroom. Isaiah and Joey are really knowledgeable and listen to your needs. I had a severe attic condensation pipe break causing major ceiling repair in my living room. Isaiah found the leak and suggested redirecting it towards another area of the attic for a better flow to the outside. It has so far worked great. I'm very pleased dealing with Christina in the office. I highly recommend this company.
    Barbara German
    Barbara German
    1731778548
    Technician arrived on time and was thorough in his review of the system. We were only having routine maintenance done and we decided to go for the one year contract. My husband was happy so that’s good enough for me!
    matt walter
    matt walter
    1731764059
    michael colley was at our home today for our heater pm .he was extremely professional and courteous. He explained everything he was doing and did a great job. Also left our home spotless when he was done. he is an asset to your company and would have him do work in our home anytime.I'm a very happy customer of top flight and would recommend this company to anyone. p.s. with techs like michael your company will continue to grow. again an extremely happy customer.
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