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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."

"Everything went extremely well. I found Grove a completely professional organization with highly skilled workers. Their plumber subcontractor handled the installation of all gas piping in my house, oversaw the hookup with BGE's gas line and installed the hot water heater. Grove provided a skilled crew of 5, with 2 working outside and 3 inside to remove all old equipment, do some duct repair and install the new air conditioner, gas furnace, humidifier and thermostat in 2 days. They also removed all debris from the worksite and swept it clean. Their work proposal included a year's maintenance, which I feel sure will be equally satisfactory. This was a big project (3 days including the plumber), but I am confident they would handle both small and large jobs with the same competence and professionalism. I highly recommend them."

"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."

"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!"

"Graham solution was amazing! Ricardo is a true representation of this organization. He came out in a timely manner, found out what was wrong with my system and replaced it. I am so thankful for Ricardo!"

"I shopped around and received quotes from this company and 3 others for installation of a new HVAC for my condo. Horizon had a fair price and the customer service and installation was worth it. The technicians and consultants were all professional and got the job done in a timely manner. Would hire again and highly recommend to others. Thank you Shawn, Michael, James, and Butch!"

"The installation team - Ramone Rivera - was professional and kind - great work"

"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."

"I got quotes from a few different contractors. Carroll Mechanical’s was very competitive. It was the best value so I decided to go with them. The installers were prompt and did a fantastic job. The new system works great and they walked me through everything before they left. I have an ongoing maintenance so I know they will continue taking care of the new unit and making sure it works well. Overall, very happy with my choice."

"This was a combination Carrier Furnace/AC installation. The sales rep and technician were extremely professional, helpful, The installation was performed the next day. I highly recommend."