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Keeping You Comfortable For Over 18 Years!

General Info
T & T Heating and Air-Conditioning Company has been serving the Maryland, Washington DC and Virginia communities since 1990. We are a leader in the HVAC industry providing professional installation and service of high efficiency, air-conditioning, heating and refrigeration systems for both residential and commercial properties. We are proud to be independent dealers for Trane , Lennox & Bryant systems, however we do service many other types of equipment. Our normal hours of operation are: * Monday through Friday - 7:00 am to 6:00 pm. We also provide 24 hour Emergency Service. Residential & Commercial Services offered Take advantage of our Spring Specials now being offered.
Extra Phones

Phone: (240) 487-6558

Fax: (301) 925-8234

* Air-Conditioning: We sell and install air-conditioning and refrigeration systems from most of the industry's leading manufacturers * Parts and labor warranties, so you can get the most out of your investment * Duct Cleaning: It's SPRING TIME and with that comes allergy season. Pollutants inside your home and office can cause many symptoms such as sneezing, itchy eyes and coughing. * Heating: A good quality heating system is essential for both the home and office. As an independent dealer. Let us assist you in making your home or office truly comfortable and energy efficient. We service and install: * Boilers * Furnaces (Gas, Oil or Electric) * Heat Pumps We also offer development of design drawings, bid specification pkgs, provision of construction review services.
* TRANE * LENNOX * BRYANT, Carrier, Comfort Maker, Goodman
Payment method
mastercard, amex, check, discover, visa
Serving the Maryland, Washing DC and Virginia Communities since 1990.


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Very UNSATISFIED with the service! Less than a year ago Trevelyan Dedier replaced my HVAC board under a 1 year warranty for parts, less than a year later the board is not working again which means either he replaced it with the old unit or used since he is refusing to give me an original invoice so I can replace it. BUT he gave me an option to pay $400 for his time so he can go and replace it only. Isn't it called BAD CUSTOMER SERVICE AND FRAUD!



Very Good Service.

Trevelyan is very professional and knowledgeable service technician. Highly recommended.



Hate It

The guy that runs this business, Trevelyan Dedier, is very rude and unprofessional. He talks over you and never lets you get a word in about your issue. He only works on his hours and is not willing to accomodate your schedule. He has set up appiontments and has not followed thru to keep them. I would NEVER recommend this company.



For the record

I spoke with T&T on three occasion to schedule an appointment. Made two appointments with him. But never showed.



Jordan Review

My unit went out on Sunday. TNT was there on Monday and my air was up and running in about 15 min. I stayed home praying and believing Mr. T would come to my rescue and he did. He called to let me know he was on his way. He was very professional and on time. Thanx TNT, I would definitely use your serivices again and recommend you to others.



Very Professional

I recommend this company to everyone that can appreciate quality service. They showed up on time, figured out what my problem in less than 30 minutes and fixed my air within an hour. I thank T&T for not charging me an arm and a leg. If I ever have anymore problems with any of my units, they will be my first call. Great company... Very professional



Very good

I was very satisfied with the entire transaction, from phone call to signoff. Quick and smooth response. I would use them again and definitely recommend them to others.


Phone: (301) 674-9617

Address: Bowie, MD 20721