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TRUSTED BY FULLERTON, CA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon393
    Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in Fullerton, CA

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

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

Last update on November 17, 2025

Find Heating and air conditioning pros in Fullerton

Avatar for Global Green Solutions
Global Green Solutions
5.0(
248
)
Central A/C - InstallBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+22 more

Serving Fullerton, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"PureAir HVAC Services was incredible! Their technician arrived promptly, worked efficiently, and restored our system in no time. The service was clean, professional, and very reasonably priced. I?m very pleased ? absolutely recommend them for any HVAC repair needs!"
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+24

Response time3 days
10 neighbors recently requested a quote
Recommended by7%of homeowners
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Avatar for Total Home Environmental HVAC Co.
Total Home Environmental HVAC Co.
4.7(
98
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairElectrical Baseboard or Wall Heater - Install+6 more

Serving Fullerton, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"Good service and fast response hvac system works like a charm now"
Technician at Service Residence
Installing UV Sterilization Light
Installing UV Bulb to fight Covid
Removing tools from stocked truck
Stocked Repair Trucks

+17

Response time3 hrs
Response rate98%
71 neighbors recently requested a quote
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Avatar for Cool Air Technologies Inc
Cool Air Technologies Inc
4.9(
493
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+6 more

Serving Fullerton, CA and surrounding areas

Approved

In business since 1996

Free estimates

Warranties offered

"I’ve had the pleasure of working with Bill and Cool Air Technologies on several occasions and they never disappoint. They’ve done a HVAC replacement as well as an entirely new HVAC system install with impeccable results. They were professional and communicative; answering all my questions and working through any issues promptly. I will look nowhere else for my HVAC needs and highly recommend them to anyone considering their services."
Additional Photos
Response time2 days
7 neighbors recently requested a quote
Recommended by98%of homeowners
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Avatar for Air Duct Professionals
Air Duct Professionals
4.7(
1,517
)
Air Ducts & Vents - Clean

Serving Fullerton, CA and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

"Great. My daughter contracted Air Duct Professionals to do her home. James, the technician, was professional, knowledgeable and did a quality job. I contacted Air Duct to do my home and requested James. James arrived on time and did an excellent job. He also helped me with a leak with my HVAC Condenser and diagnosed and fixed the issue."
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+11

Response time2 days
1 neighbors recently requested a quote
Recommended by93%of homeowners
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Avatar for Ionel Firuta
Ionel Firuta
5.0(
30
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+18 more

Serving Fullerton, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Emergency services offered

"Ionel and Lauren were excellent. They showed up when promised and did excellent work. I also found their price for a new HVAC to be very competitive. I would definitely use them again."
Heating & A/C Project
Heating & A/C Project
Heating & A/C Project
Heating and Air Conditioning Project
Heating and Air Conditioning Project

+19

Response time10 hrs
Response rate100%
7 neighbors recently requested a quote
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Avatar for MSP Heating and Air, LLC
MSP Heating and Air, LLC
4.9(
327
)
Central A/C - Service or RepairAir Ducts & Vents - CleanGas Furnace / Forced Air Heating System - Repair+3 more

Serving Fullerton, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"We had an HVAC issue develop on a Sunday. Contacted MSP and they scheduled a technician for Monday. They called us back an hour later and said they had a technician come available and asked if we were interested in getting serviced right away at the same service rate. The technician came by, fixed our system and even gave us some tips on our system. Very professional and informative. Excellent experience."
duct job all R-8 ducting
4 Ton GOODMAN Furnace
customer Vlastos
duct job all R-8 ducting
furnace install

+67

Response time4 hrs
9 neighbors recently requested a quote
Recommended by94%of homeowners
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NT Electric & HVAC
4.7(
47
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceElectric Furnace / Forced Air Heating System - Install+8 more

Serving Fullerton, CA and surrounding areas

Approved

In business since 2011

Customers say: Quick response

"I was very happy with the price, the quality of work and the how the workers and owner were so prompt when they said each time they were coming to work at my house. The estimate compared to other places beat the other guys hands down. I will recommend this company to everyone I know that need electric or HVAC service or installation."
Power supply
Response time7 hrs
8 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Paul White HVAC Service
Paul White HVAC Service
5.0(
21
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairGas Furnace / Forced Air Heating System - Repair - For Business+1 more

Serving Fullerton, CA and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

We have over 20 + years of industry experience, and are dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company foundation is built on honesty and integrity. We specialize in Central A/C, Heating and Furnace systems in addition to a variety of HVAC-related projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction!

Response time1 day
3 neighbors recently requested a quote
Recommended by66%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 ReplaceGas Furnace / Forced Air Heating System - Install+5 more

Serving Fullerton, CA and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"Installed a new HVAC system. They were punctual and professional. I'm very pleased."
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%
6 neighbors recently requested a quote
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Avatar for HD MECHANICAL INC
HD MECHANICAL INC
5.0(
26
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+47 more

Serving Fullerton, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"HD Mechanical got all our commercials units back in order. They provided excellent customer service and we will be using them from now on for all our commercial and residential HVAC needs!"
Heating & A/C Project
Heating & A/C Project
Heating & A/C Project
Heating & A/C Project
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+14

Response time9 hrs
Response rate85%
57 neighbors recently requested a quote
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Heating and Air Conditioning questions, answered by experts

Yes, a dirty evaporator coil can freeze up. Dirty evaporator coils can’t absorb or transfer heat properly. The dirt and grime restrict airflow, which is needed to move heat throughout the system properly. Your air conditioning unit could freeze over, or it can cause your heat pump to freeze.

You can buy a house with a 15-year-old HVAC system if you inspect the system for performance and budget for a replacement within the next three years. You can also negotiate the price with the sellers. Ask to look at the unit’s maintenance records and energy bills for the last two years to determine the shape of the HVAC system and its operating costs. Spend time in each room of the house to gauge if the HVAC keeps the home at a consistent temperature throughout.

An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home’s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.

Yes, you can run an attic fan with the AC on. In fact, you don’t have a choice with a passive attic fan. Plus, when an attic fan draws out hot air from the attic, it helps regulate the temperature of your whole home, so your AC doesn't have to work as hard.

Troubleshooting common issues with your AC often sheds light on a problem with the compressor. Signs that you need to replace a bad compressor include your AC blowing warm air, short cycling (turning on and off), making strange noises, and blowing less air overall. Since these problems can stem from several areas of your AC, always call a local AC repair team to confirm it's the compressor.

The Fullerton, CA homeowners’ guide to heating and air conditioning services

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

See all articles