Top-rated air conditioning pros.

Get matched with top air conditioning pros in Altadena, CA

Enter your zip and get matched with up to 5 pros

Need a pro for your air conditioning project in Altadena, CA?

Select your specific project to find the pro for you.

Verified Reviews for Air Conditioning pros in Altadena, CA

*The Angi rating for Air Conditioning companies in Altadena, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Conditioning needs.

*The HomeAdvisor rating for Air Conditioning companies in Altadena, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Conditioning needs.

Last update on August 11, 2026

Find Air conditioning pros in Altadena

Avatar for Global Green Solutions
Global Green Solutions
5.0(
248
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Install - For Business+2 more

Serving Altadena, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Great experience with our A/C replacement! The team explained everything clearly and completed the job quickly. Our home feels cooler already. Exceptional service from start to finish."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+24

Response time3 days
7 neighbors recently requested a quote
Recommended by7%of homeowners
Request Quote
Avatar for AC Dave Heating & Air
AC Dave Heating & Air
4.9(
93
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

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
Response rate100%
7 neighbors recently requested a quote
Request Quote
Efficiency Air, Inc.
4.8(
321
)
Central A/C - Install

Serving Altadena, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1985

Free estimates

Credit card accepted

"Efficiency Air Inc is a fabulous company with excellent customer service and trained professional installers. I received a quote to install a mini split air conditioner/heat pump and we were overjoyed of the quality of work we received. They showed up on time and installed the system with ease. The install Manager â Deanâ was a true leader and got everything needed accomplished. I would recommend Dean and crew to anyone needing quality service. Thank you again for everything. Your lifetime customer Nathaniel G Santa Clarita, CA"
A/C Condensers
A/C Condensers
A/C Condensers
A/C Condensers
Canoga Park, Goodman A/C

+50

Response time7 hrs
38 neighbors recently requested a quote
Recommended by95%of homeowners
Request Quote
Avatar for Air Duct Professionals
Air Duct Professionals
4.7(
1,518
)
Air Ducts & Vents - Clean

Serving Altadena, CA and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

"Sean was great about repairing my disconnected dryer air duct having to go into the crawl space and figure out what was going on. I'm glad he was able to get it done very quickly as well. He also had a very good attitude about doing the work."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+11

Response time1 day
2 neighbors recently requested a quote
Recommended by92%of homeowners
Request Quote
Avatar for All City Plumbing, Air & Electrical
All City Plumbing, Air & Electrical
4.9(
272
)
Central A/C - InstallCentral A/C - Service or Repair

Serving Altadena, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Emergency services offered

Warranties offered

"Troy and Max did an amazing job installing our water heater vent"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+42

11 neighbors recently requested a quote
Recommended by96%of homeowners
Request Quote
Avatar for Temp Air System, Inc.
Temp Air System, Inc.
4.8(
59
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+1 more

Serving Altadena, CA and surrounding areas

Approved

In business since 2002

Free estimates

Credit card accepted

"We had Temp Air install our AC unit. The best decision we ever made. They were fast, reliable and dependable. Excellent customer service, did a phenomenal job. After a couple of years something was going on with our unit, I called them and immediately they send out a technician Juan, who was phenomenal. He explained what the issue was and resolved it asap! Highly recommend this company!"
Mini Split Installation
Mini Split Installation
Mini Split Installation
Mini Split Installation
Mini Split Installation

+14

Response time10 hrs
Response rate99%
10 neighbors recently requested a quote
Request Quote
Avatar for Trinity Heating and AC
Trinity Heating and AC
5.0(
46
)
Central A/C - Service or Repair

Serving Altadena, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Warranties offered

"Just a "simple" ecobee install. Tech had a minor issue with my AC unit (it's 100%my unit) and didn't even attempt to upcharge us. Very honest and knowledgeable company. Will absolutely recommend to everyone I know."
Furnace Before
AC After
Furnace After
AC Before
Before - Furnace

+83

Response time3 hrs
Response rate98%
31 neighbors recently requested a quote
Request Quote
Avatar for Help-Me HVAC LLC
Help-Me HVAC LLC
5.0(
27
)
Central A/C - Service or Repair

Serving Altadena, CA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Sayed Haroon was very happy professional and helpful and very informative, I would recommend him for any service and next time if there?s a problem with any of my air conditioning system I?m definitely gonna be dealing with him"
My jobs
My jobs
My jobs
1 neighbors recently requested a quote
Request Quote
Avatar for Active Air Specialist Inc.
Active Air Specialist Inc.
5.0(
9
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+2 more

Serving Altadena, CA and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

"The team that came out to replace our home ducting was awesome! They were friendly and knowledgeable. They left everything neat and clean. Would defiantly recommend!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+7

83 neighbors recently requested a quote
Recommended by44%of homeowners
Request Quote
Avatar for Top Energy Solutions, Inc.
Top Energy Solutions, Inc.
4.9(
62
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Install - For Business

Serving Altadena, CA and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"I highly recommend Top Energy Solutions. During the heat wave my air conditioning system blew out hot air. I expected to wait days for a technician to come out. Leor sent one the next morning. The technician quickly located the problem and fixed it within minutes. Their employees are professional, courteous and very knowledgeable."
Roof Replacement - Owens Corning Shingle Roof
New Windows Installation in Hollywood
5 Ton Furnace Replacement
Attic insulation
New Mini Split - Daikin Emura

+87

Response time1 day
Response rate98%
4 neighbors recently requested a quote
Request Quote
...
Showing 1-10 of 560
Air Conditioning questions, answered by experts

Yes, it is possible. An electrical fire can break out if the compressor has inadequate ventilation. When it overheats but doesn't have a proper thermal cutout, this can cause the motor to short-circuit and catch fire. This risk is exacerbated if flammable materials, like dust and fallen leaves, are clogging the unit. The compressor overheating won't start a fire by itself, but poor maintenance and installation can increase the risk once it hits its breaking point and short-circuits.

The best way to reduce heat upstairs is to release it by opening a window. Hot air rises, and if you can create some airflow by opening a window upstairs and also one on a lower level, the hot air should be pushed out of the home. Remember that fans pointing out the window do a much better job of circulating air than fans pointing into the home.

Fixing a leak in an AC unit costs $200 to $1,600, depending on the type of leak and any related damage. But depending on the age and condition of your AC, it might make more sense to replace the AC unit instead of repairing it. If your AC is only a few years old and relatively problem-free, then repairing it is the right call. But if it’s nearing a decade old and has other issues, consider replacing it.

If you’re planning an AC replacement, choosing an AC with a higher SEER rating may save you money in the long run. Tax credits could cover as much as 30% of the job, and you’ll notice smaller utility bills (particularly if you live in a hot climate where you need to constantly run the AC). Generally, you can expect to pay between $350 and $1,500 for each SEER rating increase. Weigh the cost against your typical utility bill to figure out what’s worth it to you.

No, it's not advisable to only replace the outside AC unit connected to your system. AC units are designed to work as a cohesive system, and older units work differently than newer units. Therefore, replacing only one component can lead to incompatibilities that affect the system’s performance. Replacing one component can void your warranty, costing you money for repairs.

The Altadena, CA homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.

See all articles