
For a unique combination of modern, state-of-the-art products and good old-fashioned “service with a handshake", call 20th Century Air! Serving homes & businesses in Orange County, Riverside County, & Los Angeles County.

HVAC Company Serving Orange County
Proudly Serving Riverside & Los Angeles Counties for 35+ Years
For good old-fashioned “service with a handshake,” look no further than 20th Century Air. As a leading HVAC provider, we take great pride in providing quality comfort solutions to residents and business owners throughout our community. From simple repairs to emergency system replacements, our licensed and insured technicians are prepared to handle any service. Our extensive industry knowledge and experience with the latest trends ensure you receive the cutting-edge service you deserve.
Customer satisfaction is the greatest reward for our dedication to service excellence. Our testimonials consistently highlight our professionalism, punctuality, and effective problem-solving skills. By offering personalized recommendations and working with leading brands in HVAC technology, we empower our clients to maintain comfortable, energy-efficient homes and businesses, tailored precisely to their specific needs.
We provide a full range of heating and air conditioning services to meet your comfort needs. These include:
- HVAC repairs
- HVAC replacements and installations
- HVAC maintenance
- Ductless mini-splits
- Indoor air quality
- Commercial HVAC
20th Century Air completes each service with the utmost care and attention to detail to ensure lasting results. Beyond our technical acumen, we cherish the relationships we build with our clients, founded on trust, transparency, and a shared goal of achieving optimal comfort within your property.
Schedule an HVAC service in Orange County by calling (714) 430-8006. We can also be reached online.

No Job Is Too Big Or Too Small for Our HVAC Company
Here at 20th Century Air, we never cut corners or settle for work that is “good enough” because your comfort is our priority. Since opening our doors in 1987, we have encountered every HVAC problem under the sun and are confident in our ability to handle yours as well. Our technicians undergo extensive training and are fully qualified to manage any HVAC repair, replacement, maintenance, or installation service. Equipped with state-of-the-art tools and technology, we always get the job done right.
We understand that technology is ever-evolving, which motivates us to consistently integrate the most innovative solutions into our services. Whether you're dealing with seasonal system checks or deploying cutting-edge smart controls, our team is adept at implementing strategies that enhance operational efficiency and reduce your energy footprint. Your HVAC system is a critical component of your property’s infrastructure, and we stay ahead of the curve to ensure it performs efficiently and reliably.
20th Century Air’s services can be customized to meet the unique needs of your property. We have extensive experience with:
- Residential homes
- New construction sites
- Homeowners associations
- Office buildings
- Retail establishments
Need a new installation? 20th Century Air has access to top-rated, energy-efficient equipment to help make your home or business as comfortable as can be. We work closely with you to understand your goals before selecting and installing the right system for your property.
Professional HVAC Maintenance Services in Orange County
Make sure your heating and AC equipment runs better for longer by turning to 20th Century Air for annual maintenance. We have developed a comprehensive maintenance plan to keep your HVAC systems in top shape. Maintenance plan members can take advantage of priority service, special discounts, and free preventative tune-ups. Learn more by checking out our maintenance agreements.
Preventative maintenance is essential for prolonging the life of your HVAC systems and improving energy efficiency. Our maintenance services are designed to preemptively identify and resolve potential issues before they escalate into costly repairs. Regular tune-ups also help you maintain better indoor air quality, contributing to a healthier living and working environment. By choosing our maintenance plan, you ensure that your equipment is running optimally year-round, benefiting both your comfort and your wallet.

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FAQ's Have Questions? We Have Answers!
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Maintenance Plan Learn About Our Maintenance Plan
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Financing Need Financing? Check Out Our Resources.

Trusted For A Reason
Our Customers Say It Best!
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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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“Daniel my guy! He came through and fixed our AC. I had a feeling it was the filter or freon. He came showed me where to change the filter. And recommended me do it every 3 months. He didn't try to up sell me on anything. Kept it real and kept the AC runnin”- Don S.
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“These guys are very knowledgeable and efficient with their work. They gave us options that fits our budget. New AC and ducts within 8 hours or less. Also took care of our old unit. Highly recommended.”- RV F.
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“Chris and his team are amazing! They performed a complete inspection and to my surprise, they waived the fee! Completely unexpected and now a fan!”- Mary B.
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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.
Quality, Honesty & Reliability: The Hallmarks of Our HVAC Company
20th Century Air is a family-owned and operated company that treats each customer and employee like a family member. We understand how important it is to keep your home or business safe, comfortable, and functional, which is why we adhere to the highest standards in service.
As a family-owned business, we believe in extending our core values of integrity and dedication beyond just service. Our commitment to treating our clients with fairness and honesty has made us a trusted partner for HVAC services in the community. We aim to build long-term relationships based on mutual respect and strive to be more than just a service provider but a helpful ally in maintaining your home or business environment.
With 20th Century Air on your side, you can expect:
- Honest and upfront pricing
- Free service estimates
- Affordable payment plans
- Licensed technicians
- Convenient scheduling
Don’t settle for anything less than the exceptional service you deserve. Hire 20th Century Air for all your heating, air conditioning, and indoor air quality services, and rest assured your property is in great hands. We are familiar with all makes and models of equipment and can troubleshoot any HVAC system issue we encounter.
For Unparalleled HVAC Service In Orange County, call (714) 430-8006 or message us online. We Look Forward To Serving You!
Understanding HVAC Efficiency in Anaheim
Anaheim's climate poses unique challenges for HVAC systems, emphasizing the need for energy efficiency. The combination of warm summers and mild winters requires systems that can cool efficiently and minimize energy consumption. 20th Century Air addresses these needs by offering energy-efficient solutions tailored to Anaheim's climate, ensuring that your system performs optimally regardless of the season. Our commitment to reducing carbon footprints aligns with local efforts towards sustainability, a growing priority in Southern California.
We utilize advanced technologies like smart thermostats, which allow property owners to manage energy usage effectively. Our technicians are skilled in optimizing HVAC systems to ensure they conform to Anaheim's regulations, providing solutions that adhere to state guidelines while maximizing efficiency. By focusing on energy-saving practices and technologies, 20th Century Air helps clients save on utility bills and contributes to environmental conservation efforts.
HVAC Regulations & Compliance in California
California is renowned for its stringent building and energy efficiency standards, which extend to HVAC installations and operations. 20th Century Air ensures compliance with these regulations, including Title 24 of the California Code of Regulations, which sets forth energy efficiency requirements. This guarantees that new installations meet specific energy and performance criteria, contributing to reduced environmental impact and operational costs for homeowners and businesses.
Our team stays informed about the latest requirements and advancements in HVAC technology to ensure we are always equipped to provide compliant services. This dedication to compliance not only protects our clients from potential fines but also ensures that their systems are operating within the outlined efficiency parameters. We take pride in helping you navigate these regulations seamlessly, ensuring that every installation and repair meets the state's expectations for both performance and safety.
Common HVAC Issues & Solutions from a Trusted HVAC Company
Common HVAC issues in Anaheim often revolve around inadequate cooling, uneven temperature distribution, and higher energy bills. 20th Century Air's technicians are trained to diagnose and address these problems effectively, using modern diagnostic tools to pinpoint issues quickly. We focus on reliable solutions like recommending system upgrades, which can resolve inefficiencies and enhance overall system performance.
Our approach includes a thorough inspection of HVAC components, ensuring that every element functions correctly. By doing so, we help extend the life of your equipment and enhance indoor comfort. Regular maintenance is another essential service that can prevent many common issues. Our maintenance agreements include comprehensive checks and tune-ups that keep your system in top condition, helping avoid unexpected breakdowns and costly repairs.
Frequently Asked Questions About HVAC Services in Anaheim
What Should I Look for in an HVAC Company?
When choosing an HVAC company, consider factors like experience, licensing, customer reviews, and the range of services offered. 20th Century Air has over 35 years of industry experience and prides itself on transparent pricing, licensed professionals, and a comprehensive service list. Customer testimonials often highlight our reliability, quality of work, and customer-focused approach, making us a trustworthy choice for your HVAC needs.
How Often Should I Service My HVAC System?
It is recommended that HVAC systems be serviced at least twice a year - typically once before the heating season and once before the cooling season. Regular maintenance helps identify potential issues early, improves efficiency, and extends the lifespan of the equipment. 20th Century Air offers maintenance plans that provide bi-annual inspections and priority service to keep your systems running smoothly all year round.
What Are the Benefits of an Energy-Efficient HVAC System?
Energy-efficient HVAC systems offer lower utility bills, improved indoor air quality, reduced carbon footprint, and increased comfort. By investing in modern systems with higher SEER ratings, customers can experience significant savings on their energy costs. 20th Century Air provides options that align with these benefits, helping you choose systems that maximize functionality while minimizing environmental impact.
Why Is My AC Not Cooling Properly?
An AC unit may not cool properly due to issues like dirty filters, low refrigerant levels, or faulty components. Diagnosing the exact cause requires a thorough inspection by a qualified technician. 20th Century Air is equipped to perform detailed inspections to determine root causes and provide quick, effective solutions to restore your AC's performance efficiently.
How Can I Improve Indoor Air Quality?
Improving indoor air quality involves using high-quality air filters, ensuring adequate ventilation, and maintaining a clean home environment. Systems incorporating air purifiers or UV light filtration can also effectively trap or neutralize pollutants. At 20th Century Air, we offer solutions tailored to your specific needs, from installing air purifiers to recommending the best filtration systems to enhance the air quality in your indoor spaces.
Need HVAC maintenance plans in Orange County? Call 20th Century Air at (714) 430-8006 or send us a message online today!


What Set Us Apart?
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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.
