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"I’m back again to write another stellar review for GAC. Last year they replaced our HVAC system; this year we circled back and had them install a home generator. This was a long and drawn out process due to the various approvals needed from Montgomery County as well as coordination with Washington Gas (which ended up not just being a simple sign off but necessitating an additional, expensive upgrade to the gas line from the street to our home). Nevertheless, GAC did a fantastic job shepherding this process over the 6+ months of waiting on stakeholders, and they were also maximally accommodating to our family’s significant constraints on time and availability (due to health concerns related to a medically fragile family member). A special kudos to Sandy M, GAC’s master electrician, who took it on personally to ensure we were taken care of all throughout this process, going above and beyond with phone calls, text messages, personal visits, etc. on behalf of my family, I want to thank GAC and am giving top marks across the board for this effort which was complex , lengthy, and ultimately successful."

"On 7/6/20, James Sweitzer of Grove H&C arrived promptly at my home in Crofton. He politely explained to me what he was going to do to determine the problem. He determined the problem (Capicitor) and informed me of the the steps needed to correct. He then quoted me the price (Very Fair}. i gave him the OK to proceed. Problem corrected. I would highly recommend Grove H&C. Their technician was most competent and courteous. Estimate is provided prior to work and the price is very reasonable. Could not be happier with Grove H&C and its technician, James Sweitzer!!"

"Excellent customer service. HVAC installers were great, showed up on time. Dave and Allen answered my many questions during the install. I Interviewed several local HVAC companies before deciding on Beltway. Highly recommend"

"We have a backup sump pump that I discovered had been installed improperly by someone else  (7 years ago).  Also, the check valve was leaking. Doug (owner) came out the same day and fixed it all up for us, making sure it was tested and good to go.  He was very friendly and easy-going, as well as diligent and professional.  Highly recommend them."

"The plumber that came out was professional and knowledgeable. Talk me through the process before starting and after installation cleaned up well, then tested everything to make sure there was no leaks in the system."

"Carlos was great, he explained everything in terms I could understand! I had to have another company come out last year because A/C went out, they were ok. I will always come back to McCrea! McCrea has been the company that my family has been with for at least 30 years!"

"They (2 workers) did an EXECCENT job installing gas heater and Central Air unit. They were very polite and professional. I could not convince them to take a coffee break. Answered all my question. I'm soo happy I chose Blue Dot !! Also the price was unmatch... Thanks !! PS... The Wife is back to calling me HONEY again :)"

Serving Mount Airy & Surrounding Areas Since 1949\nOne Hour Air Conditioning & Heating® of Mount Airy is proud of its long history serving the Mount Airy community. Our business began in 1949 as a furnace and air duct company. In the 1950s, we began building custom homes and commercial buildings. However, we devoted our attention to HVAC work full-time in 1993. Since then, we focused on making the residents of Mount Airy, Frederick, Gaithersburg, and surrounding areas in Maryland comfortable in their homes.

"The technician did an excellent job installing the faucets in the very tight space. He was professional and I would be happy to work with him again."

"Carlos, Yarel, Muhammad and Conrad did a great job installing my new Heat Pump. They arrived promptly and did a thorough, professional, and efficient job. I highly recommend their services to anyone."