20th Century Air
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20th Century Air
Welcome to 20th Century Air - Top notch heating and air conditioning installation, maintenance, and repair, proudly serving all of Orange County, LA County, and Riverside County. What do we bring to the table? A unique combination of modern, state-of-the-art products and good old fashioned "service with a handshake."

We are a family owned and operated company with over 30 years experience in the heating and cooling industries. To us, 20th Century Service means fair prices, reliability, honest dealings, and impeccable service - that create customers for life. We have extensive knowledge and experience in the most up-to-date industry trends, while maintaining the old school service our customers love.
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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.
20th Century Air, Inc. has been installing quality air conditioning systems in Orange County, LA County and Riverside County homes for over 30 years. We have extensive knowledge and expertise in the air conditioning industry and have developed a solid reputation over the years among homeowners, contractors, and businesses as a premier air conditioning installation, maintenance, replacement, and repair company.
Despite living in sunny Southern California, most homeowners still need heat for some of those chilly winter nights. At 20th Century Air, we are the experts on all things heating in Orange County, LA County, and Riverside County. We are experienced, knowledgeable, and professional - and we recommend only what is best for your home, your needs, and your budget.
At 20th Century Air, we pride ourselves on our proactive approach to heating and air conditioning care. We take the time to educate our customers on the best ways to preserve the life of their heating and air conditioning system, keeping them in tip top shape and running smoothly for many years to come.
You work hard to keep your business running smoothly. Operations, customer service, bookkeeping, deadlines and schedules, quality control - all systems must be in place and running at full speed in order to keep the business going and the customers happy. Your facilities must also be in tip-top shape to keep your employees firing on all cylinders and your customers comfortable.
Reviews (19)
A. B.
A. B.
Jan 03, 2022
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I had used these guys many times in the past to service and repair my AC issues. They were very good about responding to my questions and also showing up promptly to perform a inspection/service/repair. Unfortunately my AC unit ended up needing to be completely replaced. The repair man had given me a verbal quote which turned out to be a little high based on what needed to be done. When I called to get a formal quote on a new AC unit and evaporator coil, they stated they would get back to me and never did. I also called to follow up a second time and I still never received a formal quote. I eventually
Norma R.
Norma R.
Dec 27, 2021
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The crew of 3 showed up and within an hour they had my heater up and running. They figured out the problem in 10minutes. I had just met with.a different company thirty minutes earlier that i was considering using.
But once We were told we were not going to have to bring down a wall, he had my attention. The crew went to work and patched up the opening the gas company recommended.
It got fixed for a fraction of the cost we were quoted a half an hour earlier.
Jam M.
Jam M.
Dec 21, 2021
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Our HVAC and thermostat stopped working and they came out right away (earlier than planned) and although they did not have the specific part they were able to do a work-around so the HVAC would keep working until the part came in. They came back the following week and did the final work, and we were very happy with their professionalism, courtesy and good communication. The work was done under warranty, so there was no charge.
Vera S.
Vera S.
Dec 19, 2021
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A few days ago, our furnace stopped working and it was during the rainy and very cold days. Yes, that was the worst possible time for a furnace to break down!

I called 20th Century Air because they have many and great reviews, and set up an appointment with one of their technicians, Shaun. He was very punctual and friendly, examined the heater and quickly discovered the problem. Shaun knew how to and did fix the furnace promptly. He also told me and my husband how to maintain it better so it can last longer. In addition, Shaun was very honest and did not try to talk us into buying a new furnace
Michael D.
Michael D.
Dec 01, 2021
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I called them to see about installing new Honeywell digital thermostat. The person I spoke with on the phone was friendly and helpful. Fortunately they had a cancellation, so they were able to come the same day. Ryan was excellent. He installed the thermostat, set it up, made sure it was level, working well and cleaned up. Now based on this experience I'm planning on calling them to do my annual AC and heating tune ups.
Kenny H.
Kenny H.
Nov 01, 2021
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This business was initially very attentive. They came out fast and did a check of my ductwork. The two men that came out did an exceptional job explaining the minor problem and even installed my smart thermostat. He said I would receive a quote and I have not yet received after a week. I sent a message to the company on yelp and they read the message but not even a reply back? Terrible customer service
Al A.
Al A.
Oct 07, 2021
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Juan H. came over and helped us to troubleshoot the installation of 3 Nest Thermostats and he was excellent...Although we were able to install the devices initially, the Nest wound up giving us error codes that related to our HVAC wiring (which we definitely didn't want to mess around with). We were concerned that other companies would overcharge just to come out and troubleshoot the problem. Not Juan! he was great and was able to diagnose the problem quickly and at a reasonable cost.
Suzette R.
Suzette R.
Oct 06, 2021
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Daniel Pop, the service manager, arrived on time to inspect the HVAC unit. Daniel was honest and appeared trustworthy as he walked through the outside unit and examined the inside unit. He cleaned the outside unit and diagnosed that our furnace needed a new ignitor to work. He also took a peek in our attic for the duct work, while advising he was concerned about possible asbestos. I appreciated his honesty and knowledge, as we were aware our HVAC unit was almost 30 years old and may need to be replaced soon. We may consider 20th Century Air for possible HVAC system replacements in the future.
Albert C.
Albert C.
Sep 22, 2021
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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. Quick scheduling, fast quotes, and responsive.
Jen E.
Jen E.
Sep 12, 2021
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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. They are amazing. We cannot thank them enough!
Jae Y.
Jae Y.
Sep 09, 2021
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Booked an appointment and was told tech would show up at 8am sharp but the tech was late. When he arrived, another company I had scheduled to take a look was there and the tech left without taking a look at the unit. He asked why I would want another company to take a look when someone was already there. I told him because I want to have multiple assessments and bids for repairs. The tech either didn't understand or didn't care for it
Desiree T.
Desiree T.
Aug 17, 2021
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I've been using this company for over 4 years and I highly recommend 20th century air. Shaun went above and beyond to repair my ac unit. The service was superior and the price was extremely
affordable. They kept me informed every step of the way. I wouldn't trust any other HVAC company to inspect or repair my unit.
Joel C.
Joel C.
Jul 29, 2021
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They are very professional and not like other companies trying to make a profit by making unnecessary recommendations.
Tina J.
Tina J.
Jul 22, 2021
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We did not end up with 20th Century Air, but our experience with Ryan and the company was nothing, but positive. Ryan's communication was fantastic and he extremely prompt. Once he arrived for the estimate, he was incredibly thorough in explaining the entire process and once he was finished, the quote was ready to go at the end. We only ended up going with a family friend (family obligations) or else we would have been happy to hire 20th Century Air.
Marie F.
Marie F.
Jul 15, 2021
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Ive been with them for over 3 yrs. They are professional, reasonably priced and my AC maintenance tune-ups are very thorough, not a 15 min check up. They explain any questions you have and are very honest and reliable.

They were on time and have modern technology using text messages which i prefer! Appt alerts, quick replies, etc.

Julie in office is great as well as Shaun, Ryan, Isaia and the entire team. Can't go wrong. They don't try to sell you anything! My unit is about 8 yrs old and they have it going strong!
Daniel T.
Daniel T.
Jul 13, 2021
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Daniel Pop went above and beyond for an elderly friend. Cleaned out the filter, replaced a few fuses and had the AC back up and running promptly.

Very grateful for good people like Daniel.

Will definitely come back in the future for all HVAC needs.
P. A.
P. A.
Jun 24, 2021
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I saw the great reviews and I had a drain leak in my attic so I called this company. They offered a free diagnostic during the week. Great communication on the app, phone and text. I was given a three hour window for my appointment. Technician Juan called to let me know he was on the way. He arrived with his mask on and even wore shoe covers while in the house. He identified the issue and quickly fixed it. Juan and his partner even cleaned up after they were done. The price was reasonable too. Overall, I would highly recommend this company and their technician Juan. Keep up the great work
Jackie B.
Jackie B.
Jun 18, 2021
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Daniel Pop was great! He explained everything to me that I needed to know and was very pleasant to work with. I will be calling him back again if I every need anything else. I recommend this company 100% and they do not try to rip you off either.
Thank you so much again Daniel. I will be calling you back.

Jackie Bagatourian
Valerie T.
Valerie T.
Feb 17, 2021
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20th Century Air came out to give a price on a new system. The 2 techs that came out Ryan and Christian were very informative and straight forward. Answering my questions.