
Serving Rockville, MD and surrounding areas
Approved
In business since 2020
Free estimates
Emergency services offered
"Very quick service and very friendly and knowledgeable technician."


Serving Rockville, MD and surrounding areas
Approved
In business since 2020
Free estimates
Emergency services offered
"Very quick service and very friendly and knowledgeable technician."

Serving Rockville, MD and surrounding areas
Approved
In business since 1936
Free estimates
Emergency services offered
"They delivered what they promised! Mark Walker, sale manager for The Home Depot and McCrea, worked very hard to get our 2 new Carrier units, even though equipment in short supply. The McCrea installation team got our new units up and running beautifully. We are grateful to the dedication, and hard working of every body involved to get the job done right."




Serving Rockville, MD and surrounding areas
Approved
In business since 2004
Free estimates
Emergency services offered
"Excellent service and quality of work"

Serving Rockville, MD and surrounding areas
Approved
Credit card accepted
Customers say: True professional
"Outstanding service. Edmond was very honest and completed the job flawlessly. I picked Hocomo to replace the whole unit with a new one."





+8

Serving Rockville, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2020
Emergency services offered
Warranties offered
"The technician was very professional and efficient with repairing our system. He explained to us what impacted our system from working properly and conducted repairs within a couple of hours. I would highly recommend using 3MMMechanical."





+8

Serving Rockville, MD and surrounding areas
Approved
In business since 2004
Free estimates
Emergency services offered
"I decided to cancel the repair because of cost. They made a repair that will last for a year or two and I will pay the price when this unit dies. A repair was $1,200 and a replacement was $4,300. Just too much."





+3

Serving Rockville, MD and surrounding areas
Approved
In business since 2012
Free estimates
Emergency services offered
"I contacted Bluestar Air Mechanical for a second opinion after an appointment with Air One. I have a Carrier HVAC system, and the Air One technician recommended a complete system replacement, claiming the blower was bad, the furnace control board needed replacing, and that there were other issues. Since replacing the HVAC is a big investment, I wanted to get a second opinion. It was only after comparing the service from Bluestar that I realized Air One may have been pushing for a new system sale or lacked the expertise to properly diagnose and repair the actual problems. Isaac, the technician from Bluestar, spent about an hour thoroughly diagnosing and fixing the issues. He found burnt wiring in the furnace and discovered that the wrong capacitor had been incorrectly installed in the AC. Isaac replaced the burnt wiring in the furnace and the capacitor in the AC. After these repairs, my Carrier system was back up and running—without the need for a costly replacement. Bluestar, and Isaac in particular, demonstrated professionalism, expertise, and honesty. They focused on resolving the actual issues instead of pushing for an unnecessary system replacement. I highly recommend Bluestar for their reliable service and Isaac’s thorough and knowledgeable work."





+13

Serving Rockville, MD and surrounding areas
Approved (Corporate)
In business since 1970
Free estimates
Warranties offered
"GAC services was able to come out for a same day trouble shooting appointment. Jim S arrived on time and was very courteous and professional. He was able to quickly identify the problem with the registers and dampers and able to get warm air flowing to the otherwise very cold areas of the house. In addition, Jim was able to recommend some additional services that would help me achieve the desired evenness of temperature such as an additional return and humidifier for the home. Great experienced master certified technician!"


Serving Rockville, MD and surrounding areas
Approved (Corporate)
In business since 2000
Free estimates
Credit card accepted
"This company was prompt, gave us a reasonable price, and the system is working very well. We give them an excellent rating for their service, and would recommend them to anyone who needs HVAC repair or replacement."


Serving Rockville, MD and surrounding areas
Approved
In business since 2006
Free estimates
Emergency services offered
"They responded our request timely. The technician is very professional and did everything neatly and timely. We are very happy with their services."
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