Proudly Serving Orange County, Riverside County, & Los Angeles County Since 1987
About Us
Proudly Serving Orange County, Riverside County, & Los Angeles County
We are a family owned and operated company specializing in heating and air conditioning installation, replacements, maintenance, and repair in Orange, LA, and Riverside Counties. We have been in business for over 30 years and are proud to have earned a stellar reputation among our customers over the years – so much so that our business has grown and thrived by word of mouth from satisfied customers. We work with homeowners, contractors, businesses, and HOAs to provide state-of-the-art products and workmanship with “20th Century Service” based on reliability, honesty, professionalism, and fairness.
Call (714) 430-8006 today to learn how we can meet your heating and air conditioning needs. We look forward to serving you!
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Discover the 20th Century Difference
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FAQ's Have Questions? We Have Answers! -
Get to Know UsLearn about our company history and who we are.
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Club Maintenance Membership Signup/Resign
The Club maintenance membership includes 2 visits per year:
One visit includes the maintenance of the air conditioning system.
The other visit would include the maintenance of the heating system.
As a club member, you would be on our priority scheduling list if any issues arise.
As a club member, you would have exclusive discounts which would include:
- 10% repair discount
- 5% system replacement discount
- 5% IAQ (Indoor Air Quality) discount
Trusted For A Reason
Our Customers Say It Best!
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“Scott is easy to get a hold of, and the technicians that installed the system were very knowledgeable. California summers seem like they're getting hotter every year, so we are very grateful for AC!”- Sofia A.
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“Although they originally no-showed, they did good business by rescheduling immediately and providing an additional discount. I think that generally made up for it and deserves 5 stars.”- Albert C.
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“20th Century Air is fantastic, they have been servicing my home HVAC system for about 5-6 years now without any issues. All the techs are friendly and personable. I even recommend them to my clients for my home inspection business.”- Jeff B.
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“Quick to respond, easy communication, and easy to schedule. Compared service fees with several other companies, and 20th Century Air was the most affordable. Daniel was prompt, thorough, and a pleasure to work with.”- Nhi T.
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“I appreciated the prompt communication and fast response by Scott (owner). Juan came out, isolated the problem and fixed it all within 30 minutes. He answered all my questions simply and honestly and did not pressure me for additional work or service. He w”- Thomas S.