Get matched with top thermostat installers and replacers in Frederick, MD

"Dave and his helper were prompt, professional and highly knowledgeable. He answered all my questions and found a way to address our problem at a very reasonable cost, instead of just recommending a new system."

"I appreciate the experience, expertise, knowledge and integrity of this business. The home I live in is very old and I am a renter with very little knowledge of HVAC services. Sean, the serviceman, explained clearly what the issue was with the furnace and even provided advice regarding CO detectors, that I should have more than one. I am very grateful for the service he provided and I definitely recommend his company."

"Great folks to work with"

"They did a great job. "

"JW Home Improvement did a great job fixing my door. Alberto fixed the door and it looks like a new door. "

"An excellent job putting together the large wardrobes. Arrived on time, professional, prepared, skilled and good customer service. I recommend Jose for any handyman needs, and will use his services in the future as needed. "

"Woke up this morning to my hvac leaking and contacted Markool. I have never used them before and was in a pinch. They fit me right in this morning and were out at my house within 2 hours. The tech stepped in the door and placed covers for his shoes so he did not track in any dirt which was impressive! The tech was very professional and super friendly. Problem was diagnosed and FIXED within an hour. The price was extremely reasonable to the point I was shocked in a good way (expecting a higher price). Anyways, I will most certainly be a returning customer. Thank you Markool Heating Cooling Plumbing."

"I had a great experience with this company. I hired them to do plumbing work and wainscoting. They were prompt, thorough, and professional. The price was decent, too. Had a small unforseen issue with one aspect of the job and they came right back ASAP and fixed it with no problem. I plan to hire them again for my next project."

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.

Comfort First Heating & Cooling is the team you need for all your home solutions. Comprehensive comfort is our legacy.\n\nWe're dedicated to delivering unparalleled customer service that mirrors our core values of integrity, stewardship, and excellence.\n\nWe look forward to having you join the Comfort First family as we continue our mission of creating customers for life by earning your business.