
Thermostat Repair in Yorba Linda
Keep Your Home Comfortable with Expert Thermostat Repair
Restore dependable comfort and efficiency in your home or business with trusted thermostat repair from 20th Century Air. Serving Yorba Linda and surrounding communities, our family business delivers clear answers and fast solutions when your temperature control isn’t working as it should.
Temperature swings can disrupt your daily life and create discomfort at the worst moments. At 20th Century Air, we understand how important reliable heating and cooling are for homes and businesses in Yorba Linda, especially as Orange County weather can shift unexpectedly. Our team responds with care and attention, helping residents maintain comfortable, energy-efficient environments while keeping utility bills manageable.
Need Thermostat Repair? Call 20th Century Air at (714) 430-8006 or send us a message online today to schedule prompt service.

Why Choose 20th Century Air?
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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.
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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.
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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.
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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.
Trusted Service Backed by Experience and Local Expertise
For over 38 years, 20th Century Air has proudly served Southern California with honesty, respect, and transparency. Our family-owned business has built lasting relationships throughout Yorba Linda and Orange County by delivering dependable thermostat repair, clear communication, and upfront pricing. We never pressure upgrades when repairs can restore comfort, and our licensed technicians treat every home and business with unmatched care and professionalism.
Our deep local knowledge sets us apart. Decades of experience in Yorba Linda mean we understand the city’s unique climate, energy rates, building codes, and the variety of thermostat systems installed across neighborhoods and commercial spaces. This expertise allows us to provide tailored solutions that maximize comfort, efficiency, and system longevity. By choosing 20th Century Air, you gain more than technical repairs—you gain a trusted partner committed to long-term satisfaction and reliable temperature control.
Check out our reviews to see why homeowners and business owners alike rely on us for honest, expert thermostat service.
Ready for Thermostat Repair in Yorba Linda? Call 20th Century Air at (714) 430-8006 or send us a message online today for fast, honest service.

Discover the 20th Century Difference
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FAQ's Have Questions? We Have Answers!
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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