24 Hour Service 302-629-9400

Customer Reviews

Best HVAC team in the Delaware area! Professional, great communicators and talented team! I use them for Commercial projects and my home.

Leanne Silicato Prosser

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Very quick service response and very nice/good gentleman that came to do the service. Would highly recommend National HVAC Service!

Elsie Gilmore

Quick response and solution to a broken air conditioner on the hottest day of the year and it was after hours! The tech was very knowledgeable and worked fast to get our house cooled down. Will recommend to all our neighbors.

Jon Wilson

National HVAC is a dependable and honest group of service reps.

Armand Ferraro

Just got routine maintenance check ups winter and summer! They were very professional and the guy wore a mask and in and out!

Lynn Alexander

I have always received good service from the Seaford Delaware National HVAC Company. I get a yearly maintenance contract from them.

William Fleetwood

I highly recommend National HVAC Service, I've been a customer for 17 years working in the home care company for many years with the elderly if I went in their homes and found out it was hot and their units weren't working I would call them immediately and they would be out within the hour, yesterday evening I called the companies answering service because my daughter with her two young children under five we're home and the AC stopped working, called me back immediately And we're out within the hour and fixed the unit I can't say enough about this company. I dealt with many companies through the years I never found one so honest and dependable.

Cheryl Jankowski

Rehoboth Beach

Danny Davis, their Residential Service Supervisor, just left my home after a VERY comprehensive - 3 hour - Annual Maintenance Service appointment, my first as a new customer .... and will be for life. He serviced three systems ... a Heat Pump and two Gas Furnace systems. I was with him the entire time - including over an hour in my crawl space - to become more knowledgeable, ask questions, and be impressed. Danny completely disassembled my crawl space gas furnace burners to make sure they were not damaged. And tested every safety switch on all systems. Danny is extremely thorough, professional, personable, and experienced. Five Star!
So glad I found National HVAC, Danny? Peter Palverento - their Residential Operations Planner, Richard Clark - their Residential Sales Manager, and the whole gang. Finally found an HVAC company you can trust, and to maintain your HVAC equipment. Again, Five Star.

William Pfordt

Seaford, DE

My new HVAC system is up and running, and I want you to know that I have been very impressed by your employees.
JoQuan has worked diligently and effectively, and done everything possible to get the job done correctly, and in a timely fashion. He has been a pleasure from start to finish.
Jake was knowledgeable, productive, and very pleasant.
Ethan was thorough and helpful in every way. He took every issue seriously, he checked with me frequently to assure that he was "on the same page" with me about routing paths, etc., and he did all that he could to make sure I was pleased with the installation.
All three of these guys are top-notch workers!

Dwight Blakeney

Seaford, DE

Very pleased with the thorough job Jaime did when he serviced my heater. He always answers my questions in a manner I can understand.

Sherryl Hartman

Lincoln, DE 19960

As the Property Manager of Savannah West and Mills Landing Apartments, I would like to take this time commend the Service Tech (Jamie). He has always been professional, efficient and fully communicates any issues or concerns, he provides options for repairs or replacements. I can depend on the quality of his service to be completed in a timely manner with excellent results. I would recommend using National every time.

Savannah West and Mills Landing Apartments

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Lewes, DE