
Serving Thurmont, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2002
Free estimates
Emergency services offered
"Great installers precessional and respectful"





+47

*The Angi rating for Boiler Installation companies in Thurmont, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Installation needs.
*The HomeAdvisor rating for Boiler Installation companies in Thurmont, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Installation needs.
Last update on April 14, 2026

Serving Thurmont, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2002
Free estimates
Emergency services offered
"Great installers precessional and respectful"





+47

Serving Thurmont, MD and surrounding areas
Approved
In business since 2014
Free estimates
Emergency services offered
"Sean, Shane, and Adam took good care of us for sales and installation. Great work, and a speedy installation."

Serving Thurmont, MD and surrounding areas
Approved
In business since 1989
Free estimates
Emergency services offered
We are a small family owned Heating, Ventilation, and Air Conditioning (HVAC) company located in Sharpsburg, MD. The business was started in 1989 under the name of RW Harrell's Pump Service Inc. when Diane Harrell and Ronnie Harrell purchased a well pump and water system business from a gentleman that was retiring. Ronnie had worked in the HVAC field from the time he had graduated from high school so it was natural to add HVAC to the services that this new company would offer. Ronnie and Diane built the company by word of mouth and continue to grow the company in this manner. Additional DBA - Harrell's Services. Additional fax - 928-492-8004





+5

Serving Thurmont, MD and surrounding areas
In business since 1949
Free estimates
Emergency services offered
"Donny and Phill arrived on time installed floor protection and shoe coverings and did an excellent job in far less time than I expected. I would recommend Tri State for installation and maintenance of HVAC systems."





+2

Serving Thurmont, MD and surrounding areas
In business since 2019
Free estimates
Emergency services offered
"They do a great job. Had a furnace installation and ongoing maintenance over the years. We have never had a problem. Very professional and qualified."





+23

Serving Thurmont, MD and surrounding areas
In business since 2010
Emergency services offered
Credit card accepted
"Jim did a great job. He quickly assessed the problem and then took our unit with him to work on it more. When he got back to us, the fix would have cost more than it was worth. He gave us options for a new or refurbished PC. We felt the refurbished was a good deal and chose that. He came back and set that up and we are very happy with it. He then took a look at my laptop and again took it along. He tuned it up and installed a speed upgrade we wanted. Of course, we paid extra for the new unit and upgrades, but we thought the price was very fair. Jim seemed very knowledgeable and responsive. We will definitely call him again if we need any computer services."



Serving Thurmont, MD and surrounding areas
In business since 1960
Free estimates
Credit card accepted
"We just finished put bathroom remodel and used Larry and sons at three different times during the project. Tyler did the initial plumbing, replacing our old lines and fixing some leaks. Next up was Andrew and he installed the bath light fixture, ran new lines and installed an exhaust fan and new gfi outlets. We finally got someone to move our vanity upstairs so we had Tim come out to install it and a new toilet to complete our remodel. All three were excellent and professional. Would definitely recommend Larry and Sons!"





+16

Serving Thurmont, MD and surrounding areas
In business since 2008
Emergency services offered
Credit card accepted
"New part was found and technician returned the next day to finish the repair. Boiler works!"
Serving Thurmont, MD and surrounding areas
In business since 2020
Free estimates
Credit card accepted
We're dedicated to providing our clients with the very best in service, installation, and repair for all phases of your plumbing needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

Serving Thurmont, MD and surrounding areas
In business since 1987
Free estimates
Credit card accepted
"Everything from sales to install was excellent! Great customer service. Explained everything well and made us feel comfortable with our decisions."





+67
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