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Find Air conditioning pros in Fullerton

Avatar for Piggies Air Conditioning
Piggies Air Conditioning
5.0(
2
)

Serving Fullerton, CA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"I recently had a Daikin AC system installed in my home and I couldn’t be happier with Piggies Air Conditioning’s service. From the very beginning, Ruben was extremely knowledgeable, thorough, and informative—he made everything clear and easy to understand. The installer, was just as impressive. He was friendly, prompt, had high-quality workmanship and left the workspace immaculate. Piggies’ quote was competitive AND they offer AMAZING WARRANTY!! Overall, I was completely satisfied with the entire experience and would absolutely recommend this company to anyone looking to replace their AC unit. By far, the best family-owned HVAC company I’ve ever had the pleasure to work with. I appreciate their top-notch teamwork!"
Air Handler
Fast, Friendly Service
High Efficiency Heat Pump
11 neighbors recently requested a quote
Avatar for Penguin Heating and Air Inc
Penguin Heating and Air Inc
5.0(
14
)

Serving Fullerton, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"Very knowledgeable, professional, and great customer service! Penguin, serviced our central AC & Heat and they explained everything to us before performing the work. They also replaced our moldy insulation in our attic. They packed and transported the old moldy insulations, ensuring that the mold does not spread, and they left our house free of any mess. I'd recommend Penguin Heating and Air to anybody in need of AC/Heat service, repair, or installation."
Diamond Bar
Diamond Bar
Diamond Bar
Furnace Install
AC Condenser

+6

Response time2 hrs
Response rate100%
17 neighbors recently requested a quote
Avatar for Trabuco Air
Trabuco Air
4.6(
130
)

Serving Fullerton, CA and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"Bill Walker is the tech that diagnosed my faulty condensing unit compressor to be grounded. Sounds like a good thing right? but its not. You never want to hear that. Should you ever do so you want Trabuco Air handling it. I was explained what was wrong and given options that i could comfortably choose from without just breaking the the already shaking bank. Trustworthy and reliable Bill is a cool cat and confident in his skill set. He knows air conditioning extensively and will solve your needs as well. I can finally enjoy the upstairs again thanks to Bill from Trabucco Air."
Response time5 hrs
Recommended by94%of homeowners
Avatar for Aace's Heating Air Conditioning & Swamp Coolers
Aace's Heating Air Conditioning & Swamp Coolers
4.5(
74
)

Serving Fullerton, CA and surrounding areas

Approved

In business since 2007

Free estimates

Small jobs welcome

"Prior to me selecting Aaceâ s heating air conditioning &swamp cooler, I interview (3) other well know AC/heating company and as most knows the â deceptionâ is real! After the initial consultations with one of the companies ( (name I wonâ t disclose)I was almost in tears about how many of their technicians were out of work and that I would help put food on their table...... I reluctantly agreed and signed the contract. After further thoughts I said to myself â he got me and immediately cancelled!! Aaceâ s heating AC & Swamp cooler they were sooo amazing and I was overjoyed with happiness! Integrity, respect, excellence, and team work they exhibited wellð ð ! I'm very picky and hard too please. I had NO option but to give frank and his team the well deserved compliments they rightfully earned!!!! Without a doubt I would recommend them to my family and friends. I forgot to mention they were very clean and took all the trash away even some of mines ð ð !!!! This review is documented from a real customer and NO one asked/ suggested I write anything. Happy customer ð ð ð !!!!"
Install
photos
Package unit
Happy customer
condenser

+133

Response time4 hrs
Response rate92%
132 neighbors recently requested a quote
Avatar for One Hour Heating & Air Conditioning
One Hour Heating & Air Conditioning
5.0(
5
)

Serving Fullerton, CA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

When homeowners want a reliable heating or air conditioning system that they don't have to think about, they call One Hour Heating & Air Conditioning. We are the premier HVAC service provider in the United States for a simple reason: we actually care about your comfort.\n\nAt One Hour, we respect you, we respect your time, and, most importantly, we respect the trust that you put in us to keep your home comfortable. It's why we back all of our work with a 100% customer satisfaction guarantee for two years, and it's why we're always on time guaranteed.

Arrival
New Furnace
New Condenser
Response time2 days
Response rate94%
Avatar for Easy Air LLC
Easy Air LLC
4.9(
26
)

Serving Fullerton, CA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"Very professional and knowledgeable. Was very honest with what needed to be fixed. My until was making a noise and the technician came out and fixed the problem. I highly recommend Easy Air"
Cleaned and serviced ac unit.
Cleaned Air return
Cleaned air return
Inspected Furnace
Cleaned out condensation pan.

+4

Response time6 hrs
2 neighbors recently requested a quote
Recommended by65%of homeowners
Avatar for Suncoast Heating and Air Conditioning, Inc.
Suncoast Heating and Air Conditioning, Inc.
4.9(
12
)

Serving Fullerton, CA and surrounding areas

Approved

In business since 2022

Free estimates

Warranties offered

SUNCOAST HEATING AND AIR CONDITIONING INC is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 12 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!\n

Response time9 hrs
5 neighbors recently requested a quote
Recommended by28%of homeowners
Avatar for RighTime Home Services Riverside
RighTime Home Services Riverside
4.1(
124
)

Serving Fullerton, CA and surrounding areas

Approved (Corporate)

In business since 1947

Free estimates

Credit card accepted

"I needed a new air conditioner, and I found Rightime Home services through Costco. Dominick arrived at my house was honest and straight forward with my quote. You cannot beat the Costco warranty for this installation. Tyler and Sonny arrived on time with their crew and completed the project in 2 days. They were professional, informative, clean. These gentlemen gutted my original air conditioner and installed a new unit. I would highly recommend this company to do any job at my house."
RighTime Home Services
RighTime Home Services
RighTime Home Services
RighTime Home Services
RighTime Home Services

+2

640 neighbors recently requested a quote
Recommended by68%of homeowners
Avatar for Global Green Solutions
Global Green Solutions
5.0(
248
)

Serving Fullerton, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"My experience with heating and air conditioning repair, replacement, and new installation was excellent. Their staff was amiable, well-informed, and meticulous. Our device is operating more efficiently than before. Really trustworthy service!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+24

Response time3 days
11 neighbors recently requested a quote
Recommended by7%of homeowners
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FAQs for air conditioning projects in Fullerton, CA

Most professional HVAC technicians require two to three hours to complete an expansion valve replacement. The timeframe depends on your unit's accessibility and whether additional repairs are needed. The process involves recovering refrigerant, removing the old valve, installing the new component, and recharging the system. Scheduling during less busy seasons may result in more convenient appointment times.

Operating your air conditioner with a malfunctioning expansion valve isn't advisable. Continuing to run the system could potentially damage other components, particularly your compressor, which is significantly more expensive to replace. If you notice performance issues like inconsistent cooling or unusual noises, it's best to have your system inspected before continuing regular use.

Expansion valves don't have a standard replacement schedule, as their longevity depends on system usage, maintenance frequency, and environmental factors. Regular professional maintenance helps identify potential valve issues before they cause system failure. Having your HVAC system serviced annually allows technicians to monitor component condition and recommend preventative replacements when necessary.

Refrigerant leaks require prompt professional attention. If your expansion valve is leaking, you'll likely notice reduced cooling performance and possibly hear hissing sounds near the unit. Addressing leaks quickly prevents further system inefficiency and avoids the environmental impact of released refrigerant. Your HVAC technician will need to repair the leak and recharge the system with the proper refrigerant type and amount.

Because many AC issues present similar symptoms, professional diagnosis is recommended. Problems like inadequate cooling, inconsistent temperatures, or strange noises could indicate expansion valve issues, but might also stem from refrigerant leaks, electrical problems, or airflow restrictions. A qualified HVAC technician has the tools and expertise to accurately identify the root cause and recommend appropriate repairs.

The Fullerton, CA homeowners’ guide to air conditioning services

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