Top-rated central a/c service or repairers.

Get matched with top central a/c service or repairers in Altadena, CA

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Central a/c service or repairers in Altadena

Avatar for Global Green Solutions
Global Green Solutions
5.0(
248
)

Serving Altadena, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Whether repairing or installing, they delivered top-level service. The technicians were polite, experienced, and very attentive. My system?s efficiency has greatly increased. I wouldn?t hesitate to use them again."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+24

Response time3 days
10 neighbors recently requested a quote
Recommended by7%of homeowners
Avatar for AC Dave Heating & Air
AC Dave Heating & Air
4.9(
93
)

Serving Altadena, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Emergency services offered

"I called and they sent someone out the next day. They were prompt and efficient and most of all the swamp cooler was repaired. The price they charged was excellent. I also signed up for a maintenance contract based on how well they took care of this problem. There are not a lot of places left who service swamp coolers so this was a good find. I have already recommended them to my sister for service on the air conditioning system in her home."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+6

Response time7 hrs
7 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for All City Plumbing, Air & Electrical
All City Plumbing, Air & Electrical
4.9(
270
)

Serving Altadena, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Emergency services offered

Warranties offered

"Michael arrived to fix our main water line after it ruptured. He was able to quickly replace the main riser and also had time to take care of a couple other repairs around the house that needed attention. Great service."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+42

Response time10 mins
16 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Service Champions, LLC
Service Champions, LLC
4.4(
50
)

Serving Altadena, CA and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"We are in the process of having both our dirty & clean water lines completely changed, which is a huge project. Several of the great Service Champion technicians have had to dig huge holes & long trenches, with the additional obstacle of having to cut through huge roots, from an enormous tree in front of our house, that have literally taking over our front yard & destroyed the pipes. They also cut through cement & even â  jackhammeredâ  through an enormous patch of concrete that was about a foot deep, which took a lot of time & muscle to remove! This was definitely an amazing example of â  good deeds for freeâ  . We had so many different, excellent technicians coming & going, who did a tremendous job for us, but I unfortunately cannot remember everybodyâ  s names. There are two guys who actually have been working at our house the most, so Iâ  d like to recognize them (big Chris & Ryan). They are both terrific examples of the Service Champions model, and are excellent in their trade! They have worked very hard & have been a great help in so many different ways, helping to make this difficult process much easier for our family! Kudos & our deepest thanks to Chris & Ryan & all the great Service Champions professionals! We sincerely appreciate you all!"
Area Drain Cleaning
Plumbing
Plumbing
Garbage Disposal
Drain Cleaning

+13

Response time4 hrs
Recommended by79%of homeowners
Avatar for HD MECHANICAL INC
HD MECHANICAL INC
5.0(
26
)

Serving Altadena, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"I’m so glad I called HD mechanical to have my thermostat fixed. We set a time to meet up and he was there on time and very professional. He was very thorough with his work and explained to me all the work he performed. He even checked and serviced my unit, showing me that my filter needed to be changed. Would definitely recommend to anyone who needs and service/repairs done."
Heating & A/C Project
Heating & A/C Project
Heating & A/C Project
Heating & A/C Project
Additional Photos

+14

Response time9 hrs
Response rate85%
57 neighbors recently requested a quote
Avatar for Air-Tech Air Conditioning & Heating Inc
Air-Tech Air Conditioning & Heating Inc
4.5(
202
)

Serving Altadena, CA and surrounding areas

Approved

In business since 1988

Free estimates

Warranties offered

"The service I received from Air-Tech was above my expectations. Alex made the selection process effortless and the installation was fast and efficient. The folks with Air-Tech are real pros."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+8

Response time2 hrs
48 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Northstar PHAC, Inc.
Northstar PHAC, Inc.
4.5(
128
)

Serving Altadena, CA and surrounding areas

Approved

In business since 2008

Free estimates

Credit card accepted

"The Tech went above and beyond to do my inspection and service. I did nor buy the yearly maintenance plan and I did not buy the $190. furnace filter ($20) at Home Depot. I had and still have a problem with the system. It makes a growling noise every 2 minutes or so. Thanks so much, anyways."
FURNACE AND COIL
new furnace
Our Beautiful Installs
Our Beautiful Installs
Our Beautiful Installs

+29

Response time3 hrs
Response rate93%
4 neighbors recently requested a quote
Avatar for Extreme Cooling & Heating, Inc.
Extreme Cooling & Heating, Inc.
4.8(
80
)

Serving Altadena, CA and surrounding areas

Approved

In business since 2004

Free estimates

Offers commercial services

"Great service, and something I really value, great communication. When Victor got held up and was going to be a few minutes late, he called me immediately to let me know. I have a lot of experience with service people just being late and never letting you know. the job is done quickly, and efficiently, and was effective in fixing my problem. He was honest and projecting. There may be a problem with longevity of the fix, and again, I really appreciated that. Would absolutely hire again."
Response time7 hrs
2 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Service All Stars Heating and Air Comfort
Service All Stars Heating and Air Comfort
4.4(
139
)

Serving Altadena, CA and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"The Service All Stars team of professionals provided an outstanding level of customer care and performance I had not experienced in years. Their attention to installation detail was remarkable. Not only was a new heating furnace installed, a custom fabricated air plenum was created and wrapped with insulation material to perfection. The heating unit cabinet was also neatly insulated and chalked to completion. Stated again, outstanding customer care, performance and workmanship quality. Ask for Ron (manager) directly regarding your HVAC project. He will guide you to the right place with your service needs, all leading to very a positive experience with your project. Highly recommend this group of professionals."
Ductless Systems
Teamwork!
Delivery Truck
Job Done!
Another One!

+2

Response time1 day
Response rate96%
17 neighbors recently requested a quote
...
Showing 1-10 of 264
FAQs for central a/c service or repair projects in Altadena, 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 Altadena, 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.