Same-day AC & heating repair, installation, and indoor air quality from certified local technicians — upfront pricing, lifetime workmanship guarantee, available 24/7.
Same-day response on most requests. No obligation.

Whether your home’s too hot or too cold, we’ve got the experts to fix it fast.
Beat the Orange County heat with fast AC repair, expert installs, and tune-ups that keep you cool all summer.
Stay warm and safe with furnace repair, new heating installs, heat pumps, and seasonal maintenance.
Purification, filtration & duct solutions.
Efficient year-round comfort.
Protect your system year-round.
We’re here when you need us.
From the Great Park to Old Town, we’re the trusted HVAC team for South Orange County homes.
Fast, reliable AC & heating service across Irvine — from the Great Park to Woodbridge and beyond.
Same-day comfort for Tustin and Old Town Tustin homes, done right the first time.
Quick definitions for the parts and terms behind your comfort system.
Biggest savings

We’re a local, family-run team — not a national franchise. When you call, you talk to a real person, and the technician at your door is one of our own. We treat every home like ours, with honest advice and upfront pricing.
A local, family-run team that treats your home like our own. No surprise fees, no pressure — just reliable work done right the first time.
South County Air Services is the trusted local heating and air conditioning company for Tustin, Irvine, and homeowners throughout these nearby communities:
I cannot thank South County Air Services enough for impeccable customer service. Behshad came out on a Saturday to check my heating unit (failing motor). He was professional, knowledgeable, courteous and thorough – extremely fair pricing, with open and honest communication. Highly recommend. Five star plus!
Super impressed with our experience. We needed to replace our 40+ year old furnace, and from the first call everything was easy and clearly explained. Responsive, great follow-up, great pricing, timely booking, installers on time and prepared, clean install, no mess left.
I am grateful to the technician who inspected my HVAC system today. I feel he did a thorough inspection and told me the truth about my unit. I had two other companies beforehand – the first gave me a report that would call for major expenditure.
You will not find a more honest and knowledgeable HVAC tech. They show up on time and are very professional, but most of all will not try to upcharge you. He could have charged me significantly more but cares about diagnosing the actual problem. I found my HVAC tech – 10 star review if I could!
It’s not often you find an honest business willing to give suggestions over the phone to troubleshoot why my HVAC wasn’t working – without charging me. After a couple minutes we determined my breaker popped and all I needed was to reset it. I appreciate Behshad and will definitely use him in the future.
I spoke with the owner on a Saturday morning and he was at my house within 45 minutes. Another company wanted $3,000 in repairs; Behshad recommended a simple $250 repair that fixed the issue. Very honest, thorough, and reliable!
I cannot thank South County Air Services enough for impeccable customer service. Behshad came out on a Saturday to check my heating unit (failing motor). He was professional, knowledgeable, courteous and thorough – extremely fair pricing, with open and honest communication. Highly recommend. Five star plus!
Super impressed with our experience. We needed to replace our 40+ year old furnace, and from the first call everything was easy and clearly explained. Responsive, great follow-up, great pricing, timely booking, installers on time and prepared, clean install, no mess left.
I am grateful to the technician who inspected my HVAC system today. I feel he did a thorough inspection and told me the truth about my unit. I had two other companies beforehand – the first gave me a report that would call for major expenditure.
You will not find a more honest and knowledgeable HVAC tech. They show up on time and are very professional, but most of all will not try to upcharge you. He could have charged me significantly more but cares about diagnosing the actual problem. I found my HVAC tech – 10 star review if I could!
It’s not often you find an honest business willing to give suggestions over the phone to troubleshoot why my HVAC wasn’t working – without charging me. After a couple minutes we determined my breaker popped and all I needed was to reset it. I appreciate Behshad and will definitely use him in the future.
I spoke with the owner on a Saturday morning and he was at my house within 45 minutes. Another company wanted $3,000 in repairs; Behshad recommended a simple $250 repair that fixed the issue. Very honest, thorough, and reliable!
$0 down and flexible monthly financing available on qualifying systems, with approved credit.
Same-day service from certified local pros — available 24/7.