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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

"Very happy with the new installation, replacement, and repair services for heating and air conditioning! The technicians were courteous, well-informed, and on time. They promptly resolved the problem and provided comprehensive explanations. A truly professional and trustworthy crew. Strongly suggested!"
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+24

Response time3 days
6 neighbors recently requested a quote
Recommended by7%of homeowners
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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 had AC Dave preform three jobs for me over the past few years. (1) New ducts a few years ago. (2) Installed a mini-split heat pump in master bedroom this year. (3) Then a few months later I had him remove my old Central AC and replace it with an 18 SEER heat pump and new coil, all the while leaving my old furnace in place as a back up. Dave and his guys did a great job on all three projects, completing each one in a day. Highly recommended."
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+6

Response time7 hrs
Response rate100%
6 neighbors recently requested a quote
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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
148 neighbors recently requested a quote
Recommended by95%of homeowners
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Avatar for Temp Air System, Inc.
Temp Air System, Inc.
4.8(
59
)
Central A/C - InstallCentral A/C - Service or RepairAir Ducts & Vents - Clean+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%
9 neighbors recently requested a quote
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Avatar for McLay Services
McLay Services
4.8(
281
)
Central A/C - InstallCentral A/C - Service or RepairCentral A/C - Install - For Business+2 more

Serving Altadena, CA and surrounding areas

Approved

In business since 1978

Free estimates

Emergency services offered

"They were very professional, on time, took the amount of time they said it would, and cleaned up afterwards. The ac is great"
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+3

49 neighbors recently requested a quote
Recommended by93%of homeowners
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Avatar for Active Air Specialist Inc.
Active Air Specialist Inc.
5.0(
9
)
Central A/C - InstallCentral A/C - Service or RepairCentral A/C - Install - For Business+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!"
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+7

42 neighbors recently requested a quote
Recommended by44%of homeowners
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Avatar for All City Plumbing, Air & Electrical
All City Plumbing, Air & Electrical
4.9(
271
)
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"
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+42

10 neighbors recently requested a quote
Recommended by97%of homeowners
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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
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Avatar for Help-Me HVAC LLC
Help-Me HVAC LLC
5.0(
25
)
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
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1 neighbors recently requested a quote
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Air Conditioning questions, answered by experts

In some cases, yes, portable air conditioners are worth buying. They’re a relatively affordable option for cooling small spaces. (On average, they cost between $100 and $500 per unit.) Plus, they’re easy to set up, and you can move them around to cool various parts of your home as needed. However, they aren’t the most efficient AC option, and they tend to be noisy.

It is normal for the attic to be hotter than the rest of the house in the summer, but only by about 10 or 20 degrees. Attics that aren’t properly insulated or ventilated can reach temperatures of 130 degrees or more which can cause damage to the home’s structure, including the roof, wood framing, and HVAC system.

Most experts recommend getting three to five HVAC quotes from licensed, insured, reputable local heating and cooling companies. Getting multiple detailed HVAC quotes (but not too many) lets you compare the equipment, services, and prices of several contractors without being overwhelmed by options. It can also let you see if one contractor’s prices are much higher or lower than the others and give you a chance to ask for clarification. That way, you can weed out any contractors who aren’t providing quality services or materials and find the company that best meets your budget, quality requirements, and long-term goals.

Assessing location for airflow, convenience, and minimal noise impact.

You can buy R-22 refrigerant for your home air-conditioning system through your local AC repair specialist, who can also refill your R-22 system as needed. You may find that the cost of R-22 has gone up due to shortages as the EPA banned this refrigerant. Ask your pro to inspect your system for any leaks or issues.

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