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Find Central a/c service or repairers in San Marcos

Avatar for Liberty Plumbing Heating Air Conditioning Inc
Liberty Plumbing Heating Air Conditioning Inc
4.9(
209
)

Serving San Marcos, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"I called just minutes before 10pm and expected to be told I'd have to wait until morning for a plumbing issue. Instead Jake showed up happy, polite and willing to find and solve our issue with in 35 to 40 min. Let me tell you Jake worked on our house for 2 hours solid, determined to fix our problem. Jerry showed up after Jake had been diligently trying everything to offer an extra hand. Both Jerry and Jake then worked an additional hour before finding and fixing our issue. Let me tell you, it was now very close to 2am!!!!!! This customer service, dedication and hard work was appreciated so much! I cannot say enough good things about Jake, Jerry or this company. Very honest, hard working people. Its hard to find this type of buisness nowdays!!!!! If i ever have another issue I will only call and use Liberty Plumbing and Heating. I sincerely Thank you for everything!!!!!"
Response time8 hrs
Response rate98%
20 neighbors recently requested a quote
Avatar for Carini Home Services
Carini Home Services
4.7(
381
)

Serving San Marcos, CA and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"I obtained several quotes for replacing or repairing an old furnace and a/c condenser unit.  Each provider had a slightly different opinion on how much of the system should be replaced and what capacity unit should be used. Carini's prices were in line with other providers, but Kurt, who gave the estimate, seems the most knowledgable.  He did appropriate follow up after the install.  Would use them again. "
Using the sewer camera to inspect the inside of a customer's drains
Camera inspection through a sewer vent on a customer's roof
Hydro jet uses water at 4,000psi to clean the inside of the mainline drain which connects all the home's drains to the city's sewer system.
Using a snake we can go through the cleanouts on the side of the house.
With the cleanouts snaked, and the blockage located, we can send the hydro jet through the sewer vent and flush out the blocked drain.

+16

Response time2 hrs
10 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Cool Air Technologies Inc
Cool Air Technologies Inc
4.9(
493
)

Serving San Marcos, CA and surrounding areas

Approved

In business since 1996

Free estimates

Warranties offered

"The customer service is always great! I've had repairs and replacements done by Cool Air and it has always been fair and honest pricing. Always professional and efficient."
Additional Photos
Response time2 days
10 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for All Day Heating And Air Conditioning
All Day Heating And Air Conditioning
5.0(
16
)

Serving San Marcos, CA and surrounding areas

Approved

In business since 2010

Credit card accepted

Customers say: True professional

"My A/C Unit stopped working, I called All Day Heating & Air Conditioning, they came by later that day and replaced my start capacitator, they had a couple on the truck that they wired together to simulate the bad one and they were all done in less than 1 hour all is good A/C works fine now.
"
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+14

Response time4 hrs
Recommended by100%of homeowners
Avatar for Airtime Plumbing Heating & Air
Airtime Plumbing Heating & Air
4.8(
28
)

Serving San Marcos, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Emergency services offered

"⭐⭐⭐⭐⭐ Exceptional Service from Airtime Plumbing, Heating, & Air! I cannot recommend Airtime Plumbing, Heating, & Air highly enough! From the initial service call to the completion of the job, my experience was absolutely five-star. We had an urgent issue with our furnace acting up just as the cold weather hit, and they responded with incredible speed and professionalism. The technician David arrived promptly, was extremely courteous, and clearly explained what was wrong with our unit. He didn't just fix the problem; he took the time to show me what maintenance steps I could take to keep the system running efficiently. What Made Them Stand Out: Punctuality & Communication: They called ahead, arrived exactly when they said they would, and kept me informed throughout the process. Expert Knowledge: The diagnosis was fast and accurate. They fixed the problem right the first time. Fair Pricing: The final cost was competitive and exactly what was quoted, with no hidden fees or upselling. Cle"
tankless water heater
Chacon house
Chacon house
Chacon house
Additional Photos

+55

Response time9 hrs
Response rate100%
93 neighbors recently requested a quote
Avatar for Same Day Heating, Cooling, Plumbing
Same Day Heating, Cooling, Plumbing
4.4(
31
)

Serving San Marcos, CA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"The service was through, friendly, and professional. We just bought the house and the equipment hadn't been serviced in a long time. Mold was removed and a U/V light installed, in addition to the standard service. Everything seems clean and the air smells fresh again. Extra filters were provided for us to use before the next 6-month scheduled service."
Additional Photos
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+7

Response time1 day
42 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for JMS West HVAC
JMS West HVAC
4.6(
193
)

Serving San Marcos, CA and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"At the beginning of the heatwave last week, I received a call from the family renting my condo in East County and they informed me that the AC stopped working. I tried a half dozen HVAC companies and none of them were available to provide service until the end of the week. I received a call from JMS West HVAC and they were available to provide service on that same day! Within two hours, the AC unit was repaired and my rental family was safe for the long hot week. The JMS repair crew was extremely professional and took care of business. Thank you!"
Naranja
Naranja
Naranja
Naranja
Naranja

+2

Response time12 hrs
3 neighbors recently requested a quote
Recommended by93%of homeowners
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FAQs for central a/c service or repair projects in San Marcos, CA

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 San Marcos, CA 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.