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Top-Rated Central a/c service or repairers in Lagunitas-Forest Knolls - Updated Nov 2026

Avatar for Elevated Comfort
Elevated Comfort
4.7(
45
)
Central A/C - Service or Repair

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"Brandon and Neptali were excellent! Brandon repaired my cooling unit and Neptali replaced my heating unit. Both were very professional and provided the highest level of customer service. I will definitely use Elevated Comfort for any future HVAC needs."
Furnace
Furnace
Tankless Water Heater
Bosch Heat Pump
Equipment Installs

+2

Response time5 hrs
Response rate100%
66 neighbors recently requested a quote
Avatar for Green Core Heating & Air
Green Core Heating & Air
5.0(
8
)
Central A/C - Service or Repair

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"Huge shoutout to the team for an outstanding AC installation! From start to finish they were professional, punctual, and extremely knowledgeable. The installation was clean, efficient, and they took the time to explain everything before leaving. You can tell they really take pride in their work. Highly recommend them to anyone needing reliable HVAC service!"
Air Conditioning Install
Harvest Thermal
Harvest Thermal
7 neighbors recently requested a quote
Avatar for Comfort Factor Mechanical, Inc
Comfort Factor Mechanical, Inc
5.0(
12
)
Central A/C - Service or Repair

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

Comfort Factor Inc is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. \n\n\n

System replacement
Mini split install
Mini split install
Mini split install
Mini split install

+18

9 neighbors recently requested a quote
Recommended by8%of homeowners
Avatar for American Heating & Air, LLC
American Heating & Air, LLC
5.0(
14
)
Central A/C - Service or Repair

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 2021

Warranties offered

Offers commercial services

"Rick (Ricardo Mora), the owner of American Heating & Air, came to my house to look at a very old gas wall heater and give me an estimate. I was having a problem with it turning on automatically from the thermostat but not always turning off. Another company had refused to even look at it because of its age and told me I had no option other than replacing it, which is not something I can afford to do at this time. Rick not only looked at the heater, and figured out a couple of possible reasons why it didn't always turn off, but he actually disassembled the whole thing to inspect the inside of the furnace and make sure it didn't have any cracks or holes in it, and then put everything back together again. He adjusted the air intake and gas pressure and inspected and fixed the thermostat which had loose screws. Lastly he looked at another old wall heater identical to this one and secured the front panel which was loose. Now the old furnace is working just fine and he saved me thousands of dollars of expense. I also now know more about the inner anatomy of a gas wall heater and how it works than I ever wanted to know! I am extremely grateful for his help and highly recommend his company. Rick is knowledgeable, courteous, friendly, punctual, and generous with his time. He went way beyond the call of duty to help me out. These old heaters won't last forever and I would have no qualms about hiring this company to repair or replace them. Besides, I like to support small businesses and locally owned and operated companies."
Old Condenser
Old Furnace
Furnace Replacement
Condenser Replacement
Response time1 day
Response rate97%
13 neighbors recently requested a quote
Avatar for DOKE'S PLUMBING HEATING & COOLING
DOKE'S PLUMBING HEATING & COOLING
5.0(
5
)
Central A/C - Service or Repair

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

DOKE'S PLUMBING HEATING & COOLING is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands-on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

AC System
Testing
Water Heater
Water Heater Install
Heat Pump

+13

53 neighbors recently requested a quote
Avatar for Same Day Plumbing, Heating, Cooling
Same Day Plumbing, Heating, Cooling
5.0(
1
)
Central A/C - Service or Repair

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

Family-owned Same Day Heating, Cooling, Plumbing operates out of Windsor, just north of Santa Rosa. We offer fast, reliable AC repair and installation services, heater repair & installation, and plumbing services, in the North Bay area of California. Our promise to you is always that if we do not fix your system the SAME DAY we arrive… you DON’T pay the service fee. Our home service experts are licensed and insured with more than 100 years of leadership experience. Additionally, we back all of our installation and replacement services with a 24-month, 100% satisfaction guarantee.

Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+8

48 neighbors recently requested a quote
Avatar for Peter Levi Plumbing, Heating, Cooling, Drains
Peter Levi Plumbing, Heating, Cooling, Drains
3.0(
13
)
Central A/C - Service or Repair

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved (Corporate)

In business since 1990

Free estimates

Warranties offered

"Service plumber arrived on site, on time and was ready to begin. He was friendly and professional. He was fully aware of the problem and what needed to be done. He acquired the necessary parts and changed them accordingly as proficient as possible. Our bathroom sink drain issue was completely resolved and ready. Thank you Eric for a great job!"
10 neighbors recently requested a quote
Recommended by70%of homeowners
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FAQs for central a/c service or repair projects in Lagunitas-Forest Knolls, 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 Lagunitas-Forest Knolls, 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.