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Your Trusted Heating & Air Conditioning Company
Serving Sussex County, DE and The Surrounding Areas
About Us

Take Flight With An HVAC Contractor That Cares About Your Comfort


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 furnace repair and 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!

    Book Online
    Contact Us
    Steve Carodiskey
    Steve Carodiskey
    1716750558
    Ryan did an awesome job…Had it working in less than 30 mins would highly recommend Top Flight.5 stars
    Daniel Callahan (DTCallahan)
    Daniel Callahan (DTCallahan)
    1716654358
    UPDATE: Tyler was just out to service our AC for the first time. Just like Ryan he took the time to explain everything he was going to do and answered all of my questions.As a new customer and and not having a gas furnace prior, Ryan took the time to explain what he was doing and how the system worked. He was very knowledgeable and professional.I would have no problem recommending Top Flight to any of my neighbors.
    james shockley
    james shockley
    1716576053
    Top notch very cordial very politeIsaiah was great
    p “Patricia” weath1
    p “Patricia” weath1
    1715288538
    Isaiah Barnes was Professional, Knowledgeable & Kind. Joe, Isaiah's assistant is also of great character. I trust both of these folks completely. So grateful to have found Top Flight. They will continue to have my business as long as I am in the area.
    Courtney Dulin
    Courtney Dulin
    1715266530
    Joan Hitchens
    Joan Hitchens
    1714691185
    Very Satisfied. Great Service.
    J Ga
    J Ga
    1714055744
    Tyler P. did our A/C Maintenance Service today. He was very pleasant to deal with, pointed out and took care of better insulating the refrigerant lines on inside unit & outside as well. Worked quickly and efficiently. Thanks again Tyler.
    Carol Cunneen
    Carol Cunneen
    1713900983
    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.
    val pisacane
    val pisacane
    1713898427
    Tyler from TopFlight was fantastic. He earned a new service subscription customer.A prior tech from Air Temp solutions left the previously working system disabled and not working. Their follow up tech quoted $1,250 for a new thermostat and thermostatic board. Needless to say I searched for another company.Tyler diagnosed a simple but easily overlooked problem. The system was restored with only a service call.Big call out to Tyler and Top Flight!
    Donna McCafferty
    Donna McCafferty
    1713795774
    Issac did a great job. Very professional and courteous. He explained the process well and looking forward to installation of new system for our pole barn.
    Susan McKechnie
    Susan McKechnie
    1713285687
    Isaiah was my technician who performed a routine AC checkup. He was professional, knowledgeable, and polite. I was impressed with the service so I signed up for the annual plan and have high expectations if I ever run into any issues. Top flight was recommended by a friend who had issues and used several companies that couldn’t fix the problem before finding Topflight that did fix the problem.
    Ben McCall
    Ben McCall
    1712938934
    Very knowlagable team, and prompt service. They got me fixed up on their first visit.
    Martin Burton
    Martin Burton
    1712270623
    On April 4th 2024. We had a great experience with Top Flight Heating & Air. Our technicians Isaiah Barnes and Joseph arrived on time. Isaiah took the time explaining every detail of the job. Very professional. We highly recommend this company.
    George Dellinger
    George Dellinger
    1711997698
    Glad we switched Top Flight for our geothermal HVAC maintenance.They have a smooth process to set and confirm appointments. Isaiah (the technician) arrived exactly on time. He is exceptionally well-trained, confident, highly proficient, professional, and easy to communicate with.I feel that our HVAC will be in good hands with theTop Flight competitively-priced maintenance program.
    Maria Maksymowych
    Maria Maksymowych
    1711831495
    Shout out to Top Flight! I had an emergency call and had to turn my heater off. Technicians arrived the next morning. Service, honesty and technical competency exceeded expectation. Thank you.
    Chris Derchin
    Chris Derchin
    1711052233
    First service by Isaiah was outstanding, he took time to explain what he was going to service before & after he was finished. I was promptly contacted next day by Christian to set up follow up Appt. Now I understand why they have 5 stars on the Google reviews.
    Tracy Niedrowski
    Tracy Niedrowski
    1711050611
    We had Top Flight install a new HVAC system. Isaiah and Tyler were great at the installation. They cleaned up after the job which was nice. The plus is the system is nice and quiet compared to our old system and the balancing they did reduced the temperature extremes in our upstairs vs downstairs.
    Tammy Crumley
    Tammy Crumley
    1710295184
    Wonderful person. Handled my problem professionally.
    Michael Davis
    Michael Davis
    1710268193
    Dean Snyder
    Dean Snyder
    1710267701
    Very professional and explained everything. I love the fact that they gave me different quotes and I did not feel like they were just trying to get money from me. Our house is only 4 years old and have had nothing but problems with the company that put the system in the house. I FINALLY have peace of mind knowing it was done right. I also really liked the yearly maintenance contract and it was not a crazy amout of money. Thank you for your trained technicians.
    D GH
    D GH
    1708621202
    Isaiah & his helper did an extraordinary thorough job and explained the issues and repairs as he did them . 5,star Quality and efficiency! Thank you!!
    Jeff Bender
    Jeff Bender
    1707915099
    Punctual, knowledgeable, friendly and reasonable prices.
    Janet Brennan
    Janet Brennan
    1706372415
    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.
    Diane Acker
    Diane Acker
    1706287685
    The Top Flight team was very professional, I highly recommend this company for all your heating needs.
    Wanda Steen
    Wanda Steen
    1706191059
    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.
    George Unkle
    George Unkle
    1706185802
    Professional, on time, very knowledgable, efficient, understanding of urgency to get my furnace uo and running
    Kat Scarpato
    Kat Scarpato
    1705093940
    Keith Jacobi
    Keith Jacobi
    1704931602
    Excellent service. Very professional and extremely knowledgeable.
    Donald Bucklin
    Donald Bucklin
    1704929040
    Very professional. Reasonably priced. Great all around experience. Very highly recommended.
    Bob Russell
    Bob Russell
    1704828374
    As new customers with Top Flight, we were visited by Ryan for an initial system inspection and a review of the various customer programs that Top Flight offered.While Ryan's extensive experience and knowledge of our HVAC system were clearly evident, his ability to explain and demonstrate issues or items in normal, understandable ways impressed us the most as a new customer.Top Flight's office staff has been equally helpful. Christina, in particular, has been exceptionally helpful with all our new customer setups and arrangements.We highly recommend that Top Flight be included in anyone's short-list of an Honest and Polite Customer-Focused service from a well-established local firm.
    Willie Nelson
    Willie Nelson
    1704465976
    Isiah and Tyler were out to service our furnace yesterday. Very knowledgeable and personable technicians. They explain the service they did and the service contract very well. It was a please having these fellows out for servicing our furnace.
    Rox King
    Rox King
    1704459736
    Isaiah was professional and courteous. Took time to explain things.
    Melissa Stone
    Melissa Stone
    1704330719
    Average. (I don't give extra stars to companies who demonstrate basic professionalism in being on time or having reasonable customer service). This company is VERY EXPENSIVE! They offer a discount to customers to "become members," which makes their service (which includes way more service than I want or need) appear cheaper by charging smaller monthly payments which add up to much more over a year than others charge for 2 annual maintenance checks. ($420/year for an 1800 sf house, compared to $180/year for the same sized house in Maryland.) This monthly payment plan makes it very difficult to track what service is already paid for and what is being prepaid. Thus they have pioneered a way to keep their hand in your wallet for months after the service has already been provided. No thanks. I don't buy it. They did allow me to cancel -which is apparently unusual for them- although they did not provide a refund for payments I made already for service that I won't get.
    Mike Davison
    Mike Davison
    1703345015
    What can I say.....BEST HVAC COMPANY EVER! Since moving to this area I have be unable to find a company to actually listen to me and do proper work. Upon a recommendation from a friend I tried this company out and I was not disappointed. Ryan was extremely professional in diagnosing and fixing my issue. He made the whole process easy and as painless as possible. He gave me many options on new systems and even informed me on state and federal rebates in our area. Isaiah is an excellent technician who loves this work and really did an amazing job. He is also by far the most polite server provider I've ever had in my house period. Taylor rounded out this trio and made this an amazing experience. I'd recommend this company to anyone who doesn't want to be pressured by pushy sales people, "know it all" technicians, and "I know better than you" owners.
    kimberly mery
    kimberly mery
    1703192400
    Had another company come out said I need a new unit. Called Top Flight for a 2nd opinion.. from the customer service on the phone and Ryan who came out I can say I cried... honest reliable friendly and caring. Ryan fixed the issue and I couldn't be happier. Definitely got a customer for life. Thank you Thank you Thank you. A million stars if I could. 😁
    Glenn Williams
    Glenn Williams
    1703188664
    Excellent service
    duran yanez
    duran yanez
    1703170445
    Top Flight completed my project yesterday and did a wonderful job. They kept clear lines of communication along the way, and the price I was quoted is what I paid. When it came to the day of installation, Isaiah and his crew were on time, polite, and came ready to work. It was a two day install and they got the job done.
    Dennis Taylor
    Dennis Taylor
    1702651510
    Isaiah Barnes is an excellent technician. He explained everything he did and was friendly and thorough. I would highly recommend him.
    Joan Karasinski
    Joan Karasinski
    1702576176
    Ryan from Top Flight is Terrific!He is a TRUE PROFESSIONAL!!We have been a customer for years and highly recommend Top Flight.THANK YOU!Joan and Tom
    W hoop
    W hoop
    1702499536
    One of the only companies in the county you can trust to do a honest job in the hvac industry. I had three companies out to try and fix my issue and they either failed to diagnose it properly or lied and said it was an expensive repair in order to upsell a brand new unit. Isaiah quickly identified a bare wire shorting out against a copper pipe in the fan unit and fixed it charging me the proper amount for the service . He is a young smart and determined technician, but most of all he is honest.
    Ron Marra
    Ron Marra
    1702219848
    This company is great and has great reviews i haven't had any problems with them however 1 very big tip do not deal with these company's that have no reviews because they have so many bad reviews that they won't list any at all i got ripped off twice by these company's that come in an hour and so on, so i stuck with this company and very satisfied.
    Susan J. Martin
    Susan J. Martin
    1701888476
    Very satisfied! Will not use anyone else!!!!if I could do 10 stars, I would!!!!!!
    Rob Vogl
    Rob Vogl
    1701711344
    In a nutshell, this company is fantastic!If you're still reading I'm going to elaborate on just why that is. We opened a new small business here in Lewes, DE and when we went seeking a local company to take care of our system they came highly recommended. Ryan reached out to me directly on Facebook to introduce himself and the team. Vey quickly he set me up with Taylor who got the ball rolling. She listened to what we were looking for and sent Mike out to have a look. He was professional and knowledgable in his diagnosis of our newly installed system. For no charge they told me what needed to be repaired and we set a day to do so. Mike and Josh came back (sooner than the appointment time I might add) and did a thorough job gettin our system up and running. Ryan and I talked again about the work and he gave us a very fair price.I am now a subscribing customer and intend to be so long as we are doing business here. I have nothing but great things to say about the entire experience and strongly recommend this team to any business in the state!
    Zach O'Hagan
    Zach O'Hagan
    1701371319
    Ryan and team were a pleasure to work with. Techs Isaiah and Taylor showed up for both legs of the install and were timely, courteous, and informative. They left crucial next steps for myself as a customer on system care going forward and insisted I call if I run into any issues. Definitely satisfied with the level of service provided by Top Flight and would recommend to anyone looking for a quality experience!
    Kelly Guenther
    Kelly Guenther
    1701301675
    Top Flight was very responsive and Issiah was extremely helpful and knowledgeable. I highly recommend this company.
    Deborah Hunt
    Deborah Hunt
    1701213841
    Ryan was very pleasant and got the heater running in no time. Very pleased.
    Howard Brenner
    Howard Brenner
    1701193187
    Ryan and Topflight did a great job for us. From analyzing the problem to fixing it. Everything was Top Notch.
    Debra Saltz
    Debra Saltz
    1699624283
    Fantastic customer service. Very professional. I would highly recommend this company.
    James Fiedor
    James Fiedor
    1699546434
    Isaiah was excellent, let me know he was coming, had a picture of himself in the text. He was very professional and friendly, and explained everything he was doing. Top quality representative for Top Flight, Thank You!!
    Tyler Sherman
    Tyler Sherman
    1699491085
    Spoke with Taylor from top flight to schedule our maintenance and air scrubber install. Both her and Ryan were very professional upon scheduling. Our technician, Isaiah Barnes promptly showed up on time, was very courteous and professional. Assisting with all questions I had during the visit. Going out of his way to help ensure all of my concerns were addressed during the visit. I highly recommend Top flight all around for their excellent service.
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