Connect With Us
Please leave your information below and we will be in contact soon.
Fullerton, CA
Fullerton, CA
Bringing Comfort Home
Fullerton HVAC Services
One Hour Heating & Air Conditioning® of Fullerton
4.9
Air Conditioning Repair, Installation & Maintenance
When homeowners want dependable heating and air conditioning they can rely on, they turn to One Hour Heating & Air Conditioning®. As a leading HVAC company in Fullerton, we provide expert Fullerton AC repair, heating services, and complete comfort solutions that keep your home comfortable year‑round. Our reputation is built on reliability, transparency, and a genuine commitment to putting customers first.
We know that home comfort is about more than just temperature. It is about peace of mind and confidence in the company you trust. That is why our experienced technicians take the time to listen, explain your options clearly, and recommend solutions that are right for your home and your budget. One Hour of Fullerton proudly serves the communities in and around Brea, Hacienda Heights, La Habra, La Habra Heights, La Mirada, Rowland Heights and more. If you live in the Fullerton area, you can count on us to deliver quality workmanship every time.
From emergency repairs to long‑term HVAC solutions, One Hour Heating & Air Conditioning® of Fullerton is committed to making home comfort simple, reliable, and stress‑free.
We Have a Reputation
For Being Punctual, Friendly and Knowledgable
MPW 333
2 weeks ago
“Techs were courteous, friendly, knowledgeable and mainly professional. Explained in detail the problem a part quit working, needed to be replaced. Not a cheap part. The great thing is they had it in hand. No need to order and wait for it to arrive. Thank you very much techs! .”
Hannah Seeker
2 months ago
“We had a new AC and heating system installed in our home and couldn’t be happier with the experience. From the initial consultation to the final installation, the service was outstanding. The team was professional, on time, and took the time to explain everything. The installation was done efficiently and neatly, and the system works great. It’s rare to find service this reliable! Highly recommended!”
Jeffrey Allstun
6 months ago
“Excellent service! Requested an appointment for my old Carrier AC unit which had stopped working. Quickly received a one hour window for the next morning. My tech was prompt, nice, and knowledgeable. He was able to assess the issue and provide a quote quickly and painlessly. They replaced the needed part right away. I also had them replace some other old parts and clean my unit. Ask about the OH club, they make it super easy and affordable to sign up and get your yearly AC and heater checkups. Overall, very satisfied with my whole experience, highly recommend!”
Alissa Carnes
3 months ago
“My heater was broke and I knew after 30 years, it was time for a new one. Cody at One Hour Heating and Air conditioning was super helpful and kind. He gave me options of what I can do and in the end I opted for a new heater. Glad I did. It works great. Thank you Cody and team. Lanette C.”
At One Hour Heating & Air Conditioning® of Fullerton, respect guides everything we do.
Our HVAC services are backed by a 100 percent customer satisfaction guarantee for two full years. As a locally owned and operated business, we are personally invested in the comfort of our community and the quality of every job we perform. Our team delivers clear, upfront pricing through StraightForwardPricing® and honors your schedule with an on‑time promise that pays you back if we fall short.
Here For You
When You Need Us Most!
'Round the Clock Availability
No matter the hour, you can trust One Hour to be there to help you when you get hit with the unexpected.
100% Satisfaction Guarantee
We guarantee our materials, labor, and craftsmanship for up to two years from the date of your service.
StraightForward Pricing® Guide
Before we start any work, we discuss your available options so you know exactly what you are getting and how much it will cost. No hidden fees!
Always On Time…Or You Don’t Pay A Dime!®
We understand your time is valuable, so we promise to arrive at your home within the predetermined time window that you select, or your service call is free.
Financing Available!
Prioritize your comfort without fronting the entire bill on day 1 – contact us today to learn more about financing options.
Hours of Operation
We are available 24/7 to take your call for emergencies. For all other services, our appointment hours are:
Monday
24 hours
Tuesday
24 hours
Wednesday
24 hours
Thursday
24 hours
Friday
24 hours
Saturday
24 hours
Sunday
24 hours
Expert Tips
Learn From Our HVAC Experts
Authority Brands is the leading provider of in-home services, building brands that support the success of franchisees as well as better the lives of the homeowners we serve and the people we employ.
