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Find Central a/c service or repairers in Potomac

Avatar for Simply Home Service, LLC
Simply Home Service, LLC
5.0(
30
)
Central A/C - Service or Repair

Serving Potomac, MD and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Sean was great during his visit to fix our furnace. He met us right away on a weekend, knew exactly what was wrong and repaired it for a very reasonable price. He was so good we asked him on the spot to do our twice a year furnace/AC checkups. Can’t recommend him highly enough."
Response time3 hrs
Response rate97%
Recommended by93%of homeowners
Avatar for McCrea Heating & Air Conditioning Services of VA
McCrea Heating & Air Conditioning Services of VA
4.6(
373
)
Central A/C - Service or Repair

Serving Potomac, 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."
Additional Photos
Trane Unit
Additional Photos
21 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for 3MMECHANICAL
3MMECHANICAL
4.9(
32
)
Central A/C - Service or Repair

Serving Potomac, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Emergency services offered

Warranties offered

"Michael arrived as promised, inspected the problem, had to go to Lowe's to purchase materials, completed the repair, and tested to be sure that all was good. I am very happy with Michael and the job that he did."
SERVICE CALLS
SERVICE CALLS
SERVICE CALLS
SERVICE CALLS
SERVICE CALLS

+8

Response time3 hrs
Response rate89%
1 neighbors recently requested a quote
Avatar for BlueStar Air Mechanical Inc.
BlueStar Air Mechanical Inc.
4.9(
32
)
Central A/C - Service or Repair

Serving Potomac, 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."
Additional Photos
Additional Photos
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+13

Response time3 hrs
Response rate100%
5 neighbors recently requested a quote
Avatar for GAC Services
GAC Services
4.7(
295
)
Central A/C - Service or Repair

Serving Potomac, MD and surrounding areas

Approved (Corporate)

In business since 1970

Free estimates

Warranties offered

"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."
Additional Photos
6 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for McCarthy Services
McCarthy Services
4.2(
370
)
Central A/C - Service or Repair

Serving Potomac, MD and surrounding areas

Approved (Corporate)

In business since 2000

Free estimates

Credit card accepted

"Excellent service from the first phone call, to expert recommendation, to sales negations to installation. I was very impressed with McCarthy Services and would highly recommend them."
Installing a new A/C system.
192 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for JDL HVAC & Plumbing Services
JDL HVAC & Plumbing Services
4.5(
951
)
Central A/C - Service or Repair

Serving Potomac, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"The JDL agent, Leron, was very courteous, professional and helpful. I felt confident that the repairs and maintenance work that he performed on my central air conditioner was correct and it has been working beautifully ever since. I will definitely use JDL HVAC Services, LLC again."
NEW INSTALL
CLEANING COILS
CLEANING COILS
 CLEANING COILS
 CLEANING COILS

+118

Response time5 hrs
259 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Ward Services LLC
Ward Services LLC
5.0(
20
)
Central A/C - Service or Repair

Serving Potomac, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Emergency services offered

Warranties offered

"We got a chimney liner, a new/replacement A/C, a new/replacement gas furnace, and new flue ducting. New sheet metal work was also built and installed to mate up all the pieces beautifully, and bring us up-to-code. Ward Services planned really well for our project; communication was easy and excellent. I highly recommend them."
Rheem Indoor AC Unit
Rheem Outdoor AC
Thermal Imaging
Air Sealing
Attic Cleanup

+25

Response time6 hrs
Response rate100%
Recommended by5%of homeowners
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FAQs for central a/c service or repair projects in Potomac, MD

Coils work to absorb heat into the refrigerant that flows through them, moving heat from one location to another. For air conditioning, the evaporator coil inside the air handler in your home absorbs heat. It then transfers the heat outside to the condenser coil, where it releases it. The opposite process happens for heat pumps. When the coils get dusty and dirty, it reduces how well these components work.

Skip regular cleanings, and dirt, debris, and mineral deposits will blanket your evaporator and condenser coils. When that happens, the coils can’t shed heat efficiently, so the system works harder and your energy bill climbs. Over time, overheating strains the compressor and can trigger a full breakdown—an avoidable repair that often costs far more than a simple annual cleaning.

AC coil cleaning is an investment that pays for itself in the benefits it provides. Dust‑caked coils force your AC to run longer, so you spend more on electricity and rack up extra wear. A quick professional cleaning restores efficiency, trims monthly bills, and eases strain on expensive parts. Over the long haul, that small yearly fee delays pricy repairs and stretches the unit’s lifespan, making coil cleaning one of the smartest HVAC tune‑ups you can schedule.

Watch for higher electric bills, rooms that stay warm no matter how low you set the thermostat, or an AC system that runs nonstop. Extra humidity and frost on the coils are also red flags. Catching these clues early lets you schedule a quick cleaning before the system overworks itself and triggers an expensive breakdown.

Your AC cleaning technician starts by shutting off the power to the unit and removing the faceplate. Compressed air and a vacuum hose blast away loose debris, followed by a coil-safe, no-rinse cleaner that dissolves stubborn grime. After the solution has soaked in, the professional wipes the fins, reassembles the housing, and restores power, leaving the system ready to cool at peak efficiency.

The Potomac, MD homeowners’ guide to central a/c service or repairs

From average costs to expert advice, get all the answers you need to get your job done.