
Serving Germantown, MD and surrounding areas
Approved (Corporate)
In business since 1989
Free estimates
Emergency services offered
"They did a good job."





+4


Serving Germantown, MD and surrounding areas
Approved (Corporate)
In business since 1989
Free estimates
Emergency services offered
"They did a good job."





+4

Serving Germantown, MD and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1982
Free estimates
Emergency services offered
"The technician was knowledgeable, efficient and friendly. "





+6

Serving Germantown, MD and surrounding areas
Approved (Corporate)
In business since 1949
Free estimates
Emergency services offered
"Great service very prompt and easy to work with."





+2

Serving Germantown, 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 Germantown, MD and surrounding areas





+73

Serving Germantown, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Warranties offered
"Brandon identified and isolated the water leak immediately. His expertise and speed were unmatched."





+12

Serving Germantown, MD and surrounding areas
Approved (Corporate)
In business since 1903
Emergency services offered
Warranties offered
"Good professional work!"




Serving Germantown, MD and surrounding areas
Approved
Credit card accepted
Customers say: Quick response
"From not having a water supply for my whole home bypass humidifier, to having a repaired, new water supply line and instant winter comfort. All in less than two hours. Thanks Edmond and team for getting me taken care of right after I arrived home from work. Wealth of knowledge, too, about HVACs warranties, and other good general advice for first-time homeowners like myself! Glad to have signed-up tonight as a member - eligible for discounts tonight and future maintenance services. Highly recommend!"





+8

Serving Germantown, MD and surrounding areas
Approved
In business since 1967
Free estimates
Emergency services offered
"I called to get an inspection done on my AC unit and was quoted $90 for the inspection plus $120 an hr for ADDITIONAL hrs. I ASKED when do I know when the “additional hrs start”, He stated that the tech would let me know once the inspection was done and then at that time he would let me know if there was work that needed to be fixed or if there was nothing then the service would end and I would only have to pay the $90. They charged me $210 for the inspection. I called and requested that we both listen to the call (Because all calls are recorded) They played the call, heard what the rep said and then stated they would get back to me. When I finally reached them again (they never called me back), they stated I would not get a refund, then replayed the call cutting out the part when the rep stated clearly that the service was only $90. They not only GASLIGHTED me, but they altered the recording. $120 may not matter to most but it sure matters to me."





+13
Serving Germantown, MD and surrounding areas
Approved
In business since 2019
Free estimates
Warranties offered
"Woke up this morning to my hvac leaking and contacted Markool. I have never used them before and was in a pinch. They fit me right in this morning and were out at my house within 2 hours. The tech stepped in the door and placed covers for his shoes so he did not track in any dirt which was impressive! The tech was very professional and super friendly. Problem was diagnosed and FIXED within an hour. The price was extremely reasonable to the point I was shocked in a good way (expecting a higher price). Anyways, I will most certainly be a returning customer. Thank you Markool Heating Cooling Plumbing."
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