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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
)
Central A/C - Service or Repair

Serving San Marcos, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"We had a severe leak under the bathroom sink that went under the wall and into my master closet ruining the flooring. He was able to repair the PEX like plumbing leak in the meantime. We are still considering going ahead with a repipe of our entire house in the future sometime."
Response time8 hrs
Response rate100%
19 neighbors recently requested a quote
Avatar for Carini Home Services
Carini Home Services
4.7(
381
)
Central A/C - Service or Repair

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 time10 mins
10 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Personal Plumbing, Heating & Cooling
Personal Plumbing, Heating & Cooling
4.5(
361
)
Central A/C - Service or Repair

Serving San Marcos, CA and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Unfortunately, I needed an HVAC company to fix my AC during a heat wave. Most companies were 5+ days out before they could even diagnose our problem. Called 3 highly visible companies, from their marketing, who said they wouldn't even work on our unit. I went with a referral from a neighbor, mistake. This company took a week to get to us then the tech went MIA for 5 days with no contact when he said he would be back tomorrow with parts. Won't mention their name as there could have been multiple uncontrollable reasons why. I then did a lot of research on different companies across multiple review websites (including Angies) and Excel Air stood out. Once I spoke to the office staff, great experience, they had a tech out to our home in 2 days with our problem diagnosed. Our tech's name was Lucas who was efficient with his time, talked me through what was going on and gave us our estimate which we were happy to move forward with. Lucas fixed our problem in under 20 minutes. Me being me, I watched each step and saw the quality work. He even put in a fuse to ensure the same problem didn't happen again to our transformer. Once he fixed everything and got our new thermostat power, our AC has been working perfectly ever since. I'm now a really big supporter of Excel Air. Their office staff worked with our insurance company after hours and actually updated us (what company does this these days) the entire way. I can't tell you how impressed I was from their office, Lucas and most of all their successful resolution of our problems with our AC. Thank you Excel Air!"
Mini Split System Install Oceanside
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+12

Response time1 day
Response rate100%
29 neighbors recently requested a quote
Avatar for All Day Heating And Air Conditioning
All Day Heating And Air Conditioning
5.0(
16
)
Central A/C - Service or Repair

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 Same Day Heating, Cooling, Plumbing
Same Day Heating, Cooling, Plumbing
4.4(
31
)
Central A/C - Service or Repair

Serving San Marcos, CA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"I never give reviews but Same Day Heating and Air Conditioning absolutely deserves one, From Start to Finish they were professional, respectful and courteous. The Customer service Representative was accommodating with my busy schedule and was able to send a Tech out later than usual to meet me right after work which I was so grateful for since My kitten and I have been freezing!! I ended up running a little late but my technician Sean was understanding and was such a nice guy. Sean was professional,informative and thoroughly explained all my options to me without being pushy, I've had such bad experiences with Service companies in the past trying to pressure me into buying something or replacing something right away but he didn't do any of that. Hands down best Customer Service I've ever received. Same Day will always be my go to for any of my HVAC Needs. Thank You Same Day. My kitten and I Thank you!! We will never go anywhere else!! :)"
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+7

Response time1 day
23 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Sky Clean Air
Sky Clean Air
4.7(
21
)
Central A/C - Service or Repair

Serving San Marcos, CA and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"I was really impressed with the service provided by Nadav and he is team. I have a thirty year old home that still had the original HVAC systems. One located in the attic and the other underneath the house. Neither of these installations was simple. The Sky Clean Air team quoted me two days to remove and install new systems. The install crew was really professional, courteous and hard working. The underneath the house install was especially difficult with a tight crawl space in a less than hospital environment. These guys were not a show up at 10 leave at 3 pm crew.......they worked long hours both days to ensure they met the promised schedule.They kept me informed any issues throughout the installation process so there were no surprises. At the end of two days we had two beautifully installed systems that now cool our 4000 sq ft house in a matter of an hour instead of the 4 or 5 the old system required. I feel that the pricing they gave me was very fair and at the end of the job I felt like I got more value than what I paid. I would certainly use them again in the future."
Air duct full of dust and debris.
Cleaned duct
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+24

Response time11 hrs
Response rate100%
6 neighbors recently requested a quote
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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.