20th Century Air Quality, Honesty, Reliability

Proudly Serving Orange County, Riverside County, & Los Angeles County Since 1987

Areas We Serve

  • Anaheim
  • Bellflower
  • Brea
  • Buena Park
  • Chino
  • Chino Hills
  • Corona
  • Covina
  • Diamond Bar
  • Fullerton
  • Garden Grove
  • Glendora
  • Irvine
  • Jurupa Valley
  • La Habra
  • La Habra Heights
  • Lakewood
  • Norco
  • Orange
  • Placentia
  • Pomona
  • San Dimas
  • Santa Ana
  • Seal Beach
  • Villa Park
  • Walnut
  • West Covina
  • Westminster 
  • Yorba Linda
Read More Read Less

Let’s Get to Work

How Can We Help You Today?

Discover the 20th Century Difference

  • FAQ's Have Questions? We Have Answers!
    Learn More
  • 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

Contact 20th Century Air Today!

We’re Ready to Help

A member of our team will be in touch shortly to confirm your contact details or address questions you may have.

  • Please enter your first name.
  • Please enter your last name.
  • Please enter your phone number.
    This isn't a valid phone number.
  • Please enter your email address.
    This isn't a valid email address.
  • Please lookup your address.
  • Please make a selection.
  • Please enter a message.
  • 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.