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The only HVAC business you need!
“Been using Great Mills Heating and Air for over 25 years. They provide excellent service. Employees are professional, knowledgeable, and friendly.”

Barbara
Fantastic experience with Great Mills.
“The service team was fast, professional, and punctual. I needed a quick adjustment within a couple of weeks and they sent a tech out, same-day, without any resistance.”

Adam

Fantastic experience with Great Mills.
"Fantastic experience with Great Mills. They installed a new high-efficiency Amana unit at a price that was substantially better than competing quotes for similar units. The service team was fast, professional, and punctual. I needed a quick adjustment within a couple of weeks and they sent a tech out, same-day, without any resistance. I would happily use them again."

- Adam
Friendly, efficient, timely, and reasonably priced!
“Great Mills Heating and Air just installed my hot water heater and installed my HVAC system 4 years ago. I have been impressed with them both times.”

Kathryn

Friendly, efficient, timely, and reasonably priced!
"Great Mills Heating and Air just installed my hot water heater and installed my HVAC system 4 years ago. I have been impressed with them both times. Their service is friendly, efficient, timely, and they are reasonably priced. I will use them again the next time I have a need for one of their services. I highly recommend them!"

- Kathryn
I HIGHLY RECOMMEND Great Mills Heating and Air Conditioning.
“GM definitely earned a 5-star rating and not just for the last job but for all the many jobs they've done for me in the past 25 years.”

Ray

I HIGHLY RECOMMEND Great Mills Heating and Air Conditioning.
"I have been using Great Mills (GM) Heating and AC since 2000 and can sincerely state that they have been the very best at all they do. There have been occasions when i used other providers but was not satisfied with how they operated and the work they did. My reason for using another provider was due to me having an insurance that covers the systems in my home. my experience has been that it's best to pay GM separately and receive better service than to use my insurance for the two Systems in my home.

GM installed a Geothermal system in my house years ago and they did a great job. I had three separate providers give me estimates for the Geothermal. Three of them came in at a much higher cost estimate. Some said they had to put up a pump-house. GM did the job for less without a pumphouse cutting my cost. and I've been highly satisfied ever since.

GM recently replaced my gas furnace that was 25 years old. Again, I attempted to use my insurance but at the end went to GM to get the job done. GM came in more reasonable and accomplish the job sooner than the wait I was experiencing withe insurance company.

GM definitely earned a 5-star rating and not just for the last job but for all the many jobs they've done for me in the past 25 years.

I HIGHLY RECOMMEND Great Mills Heating and Air Conditioning."

- Ray
We highly recommend Great Mills Heating & A.C.
“We have been doing business with Great Mills Heating & A.C. since we built our house in 1997. They are professional, polite, courteous, and reasonably priced.”

Ted

We highly recommend Great Mills Heating & A.C.
"We have been doing business with Great Mills Heating & A.C. since we built our house in 1997. They are professional, polite, courteous, and reasonably priced. I see HVAC trucks from the other guys parked at the same houses multiple times, and I have to wonder, what are they doing so frequently? We're on a 2x a year service plan which has worked very well for us.
We highly recommend Great Mills Heating & A.C."

- Ted
Emergency response was amazing!
“Great Mills HVAC was quick to respond to my emergency call for repair. The problem was quickly discovered and solved on site.”

Shirley

Emergency response was amazing!
"Great Mills HVAC was quick to respond to my emergency call for repair. The problem was quickly discovered and solved on site.
The technicians were professional and polite. The head technician explained details re the solution. I would recommend this company to others,"

- Shirley

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At Great Mills Heating & Air Conditioning, we're always ready to take your call! Give us a call at (301) 381-2679 or fill out the form below to contact one of our team members.

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