4.6 
359 *The Angi rating for Heating And Air Conditioning Service companies in Orange County, 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 Orange County, 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 March 09, 2026
Serving Orange County, 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"
+17
Serving Orange County, 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."
Serving Orange County, CA and surrounding areas
Approved
In business since 1990
Free estimates
Warranties offered
"Sabaz and his assistant were prompt and cordial. They did a neat job. I will call them again to service my HVAC ducts in the attic.
Thanks guys!
"
+11
Serving Orange County, 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."
+19
Serving Orange County, CA and surrounding areas
Approved
In business since 2000
Free estimates
Emergency services offered
Our business is our livelihood but it is also so much more. NT Electric & HVAC Inc was started to fill in a void in the current market and to make a business that people can place their trust in. Over the years we have never lost our commitment to our clients and that is what has allowed us to succeed in a very competitive industry. The employees of NT Electric & HVAC Inc stand committed to our purpose and will provide the best service!
Serving Orange County, CA and surrounding areas
Approved
In business since 2011
Customers say: Quick response
"I was out of town when my air conditioner stopped working. My mother called 2 companies to check it out. The repair men were interested in selling us a new unit not fixing it. I found NT Electric & HVAC online through Home Advisor while I was out of town. The company had good reviews. I called Nathan and scheduled an appointment. He assessed the problem and fixed it! I would highly recommend Nathan and his company. He does what s best for the customer. His prices are fair and reasonable. I would use him again."
Serving Orange County, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2022
Free estimates
Emergency services offered
"THE OWNER; CHRIS ROBINSON WAS AMAZING, EXCEPTIONAL CUSTOMER SERVICE, GREAT PEOPLE SKILLS. UNBEATABLE PRICING ON UNITS & LABOR I HAD BEEN QUOTED VERY HIGH BY 4 OTHER COMPANIES, HD MECHANICALs PRICING WAS HONESTLY EXTREMELY AFFORDABLE. HIGHLY RECOMMENDED FOR ALL YOUR HVAC NEEDS!!"
+14
Serving Orange County, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2009
Emergency services offered
Warranties offered
The industry's best technicians make the happiest customers. Turn to the pros at All City Plumbing, Air, & Electrical for all of your plumbing, HVAC, and electrical needs. Proudly serving San Bernardino, Riverside, Los Angeles, and Orange Counties. We have over 5000s 5 star reviews across the web from our thrilled customers. Our company goal is to make sure that we have 100% customer satisfaction. We have options and payment plans that can fit in everyones budget. We provide free estimates and you only pay when you're happy. It's no surprise we've received the Angie's List Super Service Award six years in a row! Established in 2009. ACP was created to deliver exceptional service with the highest quality of craftsmanship. We guarantee you will be happy with our services in that we offer a money back guarantee. Our technicians are regarded by their peers to be some of the best in the industry. Our service experts are continuously trained. There isn't a plumbing or hvac problem we can't solve. We have the experience, knowledge and focus to solve any problem you may have. Give us a call today and let us earn your confidence.
+42
Serving Orange County, CA and surrounding areas
Approved
In business since 2025
Emergency services offered
Warranties offered
"Thank you First Class They did a full service on my unit and everything was handled quickly and efficiently. The team was on time, respectful, and clearly knew what they were doing. Highly recommend them for anyone needing reliable HVAC work! Thanks boys"
+28
Serving Orange County, CA and surrounding areas
Approved
In business since 1996
Free estimates
Emergency services offered
"They came out and fixed my HVAC system and did not upsell me on anything. Really professional and would absolutely recommend again."
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