Get matched with top furnace / forced air heating system install or replace pros in Upper Fairmount, MD

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!

"Promptly returned email regarding service request, on Saturday. Responded same day to repair 2Ton Geo unit (Waterfurnace). Extremely knowable on geo-thermal systems, the repairs were made in timely manner at a fair price, my only regret on this geo unit is I should have had Continental install the system in the first place, it’s seems very likely I would not be haveing the maintenance issues."

"Also, added 1 lb. of refrigerant.  Installed 7 filters on two floors of house interior. "

"Hvac pros technician arrived 20 minutes after call and they installed both systems the very next day."

"Mike Teutsch is very knowledgeable and professional. He checked our Furnace to make sure all systems were in working order. Mike called ahead of time to let us know when he would be arriving. One Hour installed our new Furnace and AC Unit's. Mike took the time to explain the operation of the Furnace. We are very pleased with the Service that Mike and One Hour provide. I would highly recommend One Hour to be your go to HVAC Company."

"Murphy Family Electric is an awesome company with very competent technicians and reasonable rates. They make the whole process pretty straightforward. I had used them to get my Tesla charger in 2018 (Cost: $799 including material). I was so impressed with their work that when I had a complex electrical job - installing a new 120v outlet requiring a new wire from the circuit breaker - I did not get any quotes but just booked them. That job was done very professionally as well (Cost: $949). Fast forward to Mar 2025, my tesla charger had problems with over heating and intermittent power loss. I called Murphy Family Electric and they sent a technician the same day who came and adjusted/cleaned the connections and spent 30 mins fixing the problem. And to my surprise the company did not even charge me anything for this. So on top of everything else you can add absolutely fantastic customer service to their list of attributes."

"We had many issues with our computer - primarily with the CD/DVD drive and iTunes. Jim eliminated over 700 viruses from our computer, which was just the beginning. There continued to be problems within the systems of the computer. Luckily Jim charges by the job and not by the hour because he worked a LONG time to make it all work.  He kept in touch with me and addressed each issue as it arose until the job was done.  He was professional and courteous and hung in there until I was satisfied he had addressed everything. I would highly recommend Jim and will definitely use his services in the future, as needed.
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Colonial Chimney & HVAC have been servicing Maryland, Washington, DC and Virginia since 1990. We are a family owned and operated service company. Our highly trained and skilled professionals provide the highest quality service at the most affordable price. At Colonial Chimney & HVAC, we have skilled technicians that can determine the best course of action to repairing your chimney etc.. Hear we are dedicated to offering our clients the highest- quality in chimney and HVAC services.

"I cannot speak highly enough about this company. They rescheduled to an earlier time so I would not miss work. I had 20 windows cleaned, plus the large window above my door in the foyer. They worked very hard and efficiently, getting on ladders outside to reach every corner. Screens were removed and replaced. I will not hesitate to use them again. Jose and crew were wonderful.
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"The Technician seem to know his job and seems very experienced in it. He explained why the furnace was not allowing heat to through. There was a part that had to be checked every few years and cleaned. And he did it put the back inside the furnace and the heat started."