20th Century Air Quality, Honesty, Reliability

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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Let’s Get to Work

How Can We Help You Today?

Discover the 20th Century Difference

  • FAQ's Have Questions? We Have Answers!
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  • Get to Know Us
    Learn about our company history and who we are.
    Learn More
  • 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
    Sign Up

Trusted For A Reason

Our Customers Say It Best!
    “They are amazing. We cannot thank them enough!”
    “My mother in laws AC unit went out at her manufactured home. It was during this heat wave and she was concerned it would take week or two to get it fixed. 20th century air was phenomenal as always. They came out and fixed it the next day.”
    - Jen R.
    “Friendly & Personable”
    “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.
    “Timely, Courteous, & Got the Job Done”
    “They worked around my schedule for a consult. The technician was timely, courteous, and got the air conditioning back up and running within 15 minutes. Needless to say my house is now freezing cold. This company is fair, reliable, and didn't try to upsell ”
    - Paul T.
    “5 Stars!”
    “Great business with generous owners who do great work”
    - Alec M.
    “It such a good experience overall.”
    “I cannot speak highly enough about the service I received from Scott, the owner, and Mario. They responded super promptly, came out a fixed the issue without trying to upsell me, even though my unit is older and could be considered for replacement.”
    - Cheryl L.

Contact 20th Century Air Today!

We’re Ready to Help

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  • By submitting, you agree to receive text messages from 20th Century Air at the number provided, including those related to your inquiry, follow-ups, and review requests, via automated technology. Consent is not a condition of purchase. Msg & data rates may apply. Msg frequency may vary. Reply STOP to cancel or HELP for assistance. Acceptable Use Policy
  • Financing Solutions Available
    Ask us about our available financing options. Our valued partnership with Service Finance means that we can help you through any emergency no matter your situation.
  • Customer Care Focused
    We are capable, experienced and willing to help you find HVAC solutions. We promise to do it with a smile on our faces and treat your home with integrity and respect.
  • 35+ Years Experience in HVAC
    With over 35 years in the HVAC industry, we believe in staying up to date on the latest technology and remaining dedicated to delivering quality solutions to our customers.
  • Family Owned & Operated
    We are proud members of our community and take pride in serving families like ours across Southern California. We're from the area, know the area, and take solace in knowing there isn't much that will surprise us in our service area.