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Find Central a/c service or repairers in Bethesda

Avatar for Presidential Heating & Air Conditioning
Presidential Heating & Air Conditioning
4.6(
455
)

Serving Bethesda, MD and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1982

Free estimates

Emergency services offered

"I like the tracking and instant messaging of the technician. It made it easy to determine his arrival. Troubleshooting took less than 5 minutes. I had a broken capacitor. I received an Angie's list discount. Total repair was $344.91. I don't know how much a capacitor normally costs as I don't know the exact version I received. I also was in a hurry since it was a hot day and I was going on vacation soon. He also suggested I clean the vents, which I did after he left."
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+6

24 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Bamford Plumbing and Heating Inc
Bamford Plumbing and Heating Inc
4.8(
65
)

Serving Bethesda, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Emergency services offered

Warranties offered

"Perfect! Doug is an expert Plumber that knows private water system. He removed the old equipment and installed the new. Everything is still working great. The work was done almost 13 years ago. We used all Top of the line Gould Equipment. I probably should call Doug to replace it again because breakdowns with the water system can leave you stranded."
Do you know if your sump is still working? We also have sump pumps avialable to protect you from power outages. That’s right no power no problem forget about the “battery back up” sump pumps if you have municipal water supply this is the way to go call today for details !
Tankless
Power Vent
Gas and Electric
Tree roots giving you problems with your drains? Have us come out today and try a Rootx root treatment !

+2

3 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for GAC Services
GAC Services
4.8(
292
)

Serving Bethesda, 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."
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27 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for McCarthy Services
McCarthy Services
4.2(
370
)

Serving Bethesda, 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.
506 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for 3MMECHANICAL
3MMECHANICAL
4.9(
25
)

Serving Bethesda, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Emergency services offered

Warranties offered

"This technician was amazing he made sure all repairs were completed from start to finish. A1 service with A1 customer service. I would recommend him and anyone working for him anytime."
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+8

Response time3 hrs
Response rate89%
Recommended by4%of homeowners
Avatar for Edwin's Air Conditioning & Heating, LLC
Edwin's Air Conditioning & Heating, LLC
4.9(
28
)

Serving Bethesda, MD and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"I neede same day service and they were able to assist. The technician was very knowledgeable and professional. The job was done quickly and efficiently and the results were evident right away. Very appreciative of their work and would gladly recommend their services to others."
Response time2 hrs
Response rate90%
Recommended by96%of homeowners
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FAQs for central a/c service or repair projects in Bethesda, 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 Bethesda, 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.