Michael Bonsby Heating & A/C

Name: Michael Bonsby Heating & A/C
Address: 7950 Cessna Ave, Gaithersburg, MD, 20879, US
Telephone: 301-990-7970
Rating: 2

7950 Cessna Ave
Gaithersburg, MD 20879 301-990-7970

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53 ratings
63% gave a "superior" overall rating
Compare 183 nearby heating & air-conditioning contractors
"I would strongly recommend against using this company. In 2022, Michael Bonsby sold me an HVAC system..."
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Prices for Michael Bonsby Heating & A/C

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Consumer Ratings for Michael Bonsby Heating & A/C — 53 Ratings

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Complaints for Michael Bonsby Heating & A/C

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Areas Served by Michael Bonsby Heating & A/C:

Alexandria
DC–NE
DC–NW
Howard Co.
Montgomery Co.

Equipment company services/installs:

Air duct cleaning
Humidifiers
Air ducts (sheet metal work)
Oil furnaces
Central air conditioners

Electric furnaces
Gas furnaces
Hot water heating systems
Electronic air cleaners
Heat pumps

Attic fans

Consumer Comments for Michael Bonsby Heating & A/C

Consumer from WASHINGTON, DC
Jan 15, 2026

I would strongly recommend against using this company. In 2022, Michael Bonsby sold me an HVAC system that repeatedly malfunctioned over the next 3 years. At least 20 times, the system failed to shut off when the temperature in my home reached the temperature set on the thermostat. Instead, the system continued to run (and the actual temperature continued to rise/fall) and could only be shut off by flipping the circuit breakers. In one case, the heat ran until it was over 80 degrees in my home. In another, the AC ran until it was 62 degrees. Despite many service visits, Bonsby could not identify and fix the defect in the system. Multiple techs arrived without any background, requiring me to explain the lengthy history. Several seemed to question if the events I described really had occurred. When I called the office to report further malfunctions, my requests to speak with a supervisor in the service department were rebuffed. During a summer 2025 service visit, I again asked to speak with a supervisor. The tech told me he had contacted his manager and his manager would call me back. No one from the service department ever called me. Thereafter, I hired another company to install a new system that functions properly and sent Bonsby a letter requesting a refund of my purchase price for the defective system. When they refused, I submitted a complaint to the DC Attorney General’s Office of Consumer Protection. Bonsby continues to refuse to refund any portion my purchase price and has made arguments that misrepresent the facts of the matter and applicable law.

Consumer from Silver Spring, MD
Jul 20, 2025

Great work but prices high

Consumer from WASHINGTON, DC
May 27, 2025

Received estimates from several different HVAC contractors for a project. This company's estimate was twice as expensive ($20k+ vs $10k) from other contractors just as reputable. Might try to upsell and overcharge if they perceive you to be clueless.

...and 16 more consumer comments for Michael Bonsby Heating & A/C

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