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"DC Area - Presidential Heating. We have a two-zone system to cover basement+first floor and separately the second floor and both failed, unbelievably, within a few days of each other while on a trip. Late morning on a Sunday I googled emergency HVAC and saw all these 2 star companies and then I saw an impossibly high rating for Presidential Heating and that they don't charge extra for weekends. Ayite (fantastic) came out and fixed both systems and they were way more than reasonable. And now we have heat upstairs and downstairs! yaaaaaaaa. Our previous HVAC company got their scruples from the Sopranos while Presidential is a godsend."

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"I would strongly recommend against using this company. Michael Bonsby sold me an HVAC system that repeatedly malfunctioned between its installation in August 2022 and removal in October 2025. Over those 3 years, Bonsby had ample opportunities to identify and correct the defect in the system, but it failed to do so. Nor did Bonsby ever offer to replace the system. In fall 2025, after years of frustration, I requested that Bonsby refund my purchase price for the defective system. Bonsby has refused and, in doing so, made arguments that are materially inaccurate as to the facts of the matter and applicable law. "

"Great and Professional Service. Loved the new Carrier Heater that was installed"

"The technician that was tasked with the job was very knowledgeable and professional."

Presidential Heating & Air Conditioning in Gaithersburg was founded in 1982. From the very first day, our mission has guided our company's success honesty, superior customer service, and the highest quality system installation around. Year after year, the Presidential team has continued to meet and surpass those ideals without cutting corners.\n\nAs a direct result of our dedication to quality products, people, service, and installation — Presidential Heating & Air Conditioning has built our foundation on customer loyalty and trust. With a complete satisfaction guarantee, the Presidential team won't rest until the job is done and their customers are completely happy with their work.\n\nWhether you own a commercial or residential building or need installation or service, we are committed to providing each of our clients with our expertise regarding the most environmentally friendly systems around.

"Nick Bull of Tim Kyle HVAC did an awesome job. Diagnosed the problem quickly, performed the service, explained everything clearly and all at a reasonable price. I entered into a service contract and scheduled mote maintenance work for next week. Highly recommend the Company in general and Nick specifically!"

"Great folks to work with"

"From not having a water supply for my whole home bypass humidifier, to having a repaired, new water supply line and instant winter comfort. All in less than two hours. Thanks Edmond and team for getting me taken care of right after I arrived home from work. Wealth of knowledge, too, about HVACs warranties, and other good general advice for first-time homeowners like myself! Glad to have signed-up tonight as a member - eligible for discounts tonight and future maintenance services. Highly recommend!"

"Not Recommended for Thermostat Replacement — Unreasonable and Unfair $700 Charge I do not recommend Glenmont Air Conditioning & Heating for thermostat replacement work. I was charged $700 for a simple thermostat replacement, which I believe was unreasonably high and unfair. I was under the impression that the quoted estimate represented the maximum expected cost only if the technician had to perform additional wiring or complex installation work. If you want to install an Ecobee or any other type of thermostat, you can simply YouTube the installation, which provides step-by-step instructions on how to unwire, label, and rewire to the new thermostat. For my installation, I was under the impression that additional wiring might be needed, but it turned out to be a straightforward swap of the old thermostat with a new Ecobee unit, a process that took only about 15 minutes. Despite that, I was still charged the full amount. The Ecobee Premium thermostat itself costs around $250, meaning they charged nearly $500 just for labor, regardless of how simple or quick the installation is. To make matters worse, the installation only comes with a 30-day warranty, which hardly justifies such a high price. I tried to communicate and explain that this charge was unreasonably high and unfair, but they simply said, “It is what it is.” If you’re considering a thermostat installation, I strongly suggest hiring a professional through Thumbtack, where qualified experts can do the same job for under $150 with transparent pricing and good service. I expected fairness, honesty, and reasonable pricing from Glenmont, but unfortunately, that was not my experience."