Fast, reliable HVAC repair, maintenance, and installation from certified local technicians. Upfront flat-rate pricing, honest recommendations. Text us for a faster response.
Same-day response on most requests. No obligation.
We keep homes comfortable throughout Mission Viejo — from the established neighborhoods around Lake Mission Viejo and Aegean Hills to Madrid, Castille, and the newer hillside homes toward the Saddleback foothills. As one of the largest master-planned communities in the country, Mission Viejo has a wide mix of home ages — many original furnaces and AC systems from the area’s build-out are now due for efficient replacements.
Our licensed technicians cover both Mission Viejo ZIP codes — 92691 and 92692 — from the Shops at Mission Viejo and Oso Creek to the neighborhoods along I-5 and Crown Valley Parkway. Whether it’s same-day AC repair near Lake Mission Viejo, a furnace replacement in Aegean Hills, or a tune-up to handle hot inland summers, we respond fast across the city. Call (949) 933-3130 or request service online.
South County Air Services provides fast, reliable air conditioning and heating service in Mission Viejo, California. Mission Viejo is one of South County’s largest master-planned cities, built around Lake Mission Viejo, with many 1970s–90s homes that benefit from modern, efficient HVAC. We’re a local, family-owned and owner-operated team offering same-day appointments, upfront flat-rate pricing, and Mon-Sat emergency service.
Spring & fall tune-ups that keep your system efficient and prevent breakdowns.
Same-day & Mon-Sat repair for AC, furnaces, heat pumps and thermostats — all brands.
New high-efficiency systems, correctly sized, with financing available.
When the heat does not come on the first cold night, we fix it the same day, Monday through Saturday. Our crew repairs gas furnaces, heat pumps in heating mode and thermostats of every brand across Mission Viejo. The diagnostic is $79, waived when we do the repair, and every price is quoted flat-rate before any work starts, so there is no hourly meter running and no upsell.
Common furnace repairs and what they cost in Mission Viejo:
Furnace blowing cold air, not turning on, short cycling, a burning smell at first start, or a heat pump that will not warm the house: those are the calls we see most in Mission Viejo every winter, and most are fixed in a single visit. Not broken yet? Our $89 fall furnace tune-up (regularly $129) catches a dirty flame sensor or a failing igniter before it leaves you cold. See the full furnace repair page or heat pump repair. Call or text (949) 933-3130; for a faster response, text.
Same-day & Mon-Sat service across South Orange County.
Quick definitions for the parts and terms behind your comfort system.
Many Mission Viejo homes were built in the 1970s–80s and are on their second or third system: see what that means for your AC and furnace. Wondering what a repair should cost? See the 2026 repair cost guide.
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 — open Mon-Sat.
★★★★★“Henry promptly responded to diagnose my heater problem. He clearly explained everything in precise detail and shared all my options — friendly and extremely knowledgeable.”
— George Igawa Jr., Google review
★★★★★“A client’s property had a carbon monoxide detector going off — we found a gas leak at the heater. I called in the morning and they were there with a new heater by 3 PM that day. Professional, friendly, and efficient.”
— Dianna McGarvin, Google review
★★★★★“We had an outstanding experience with South County Air! From start to finish, their entire team was absolutely fantastic — professional, polite, and genuinely a pleasure to work with.”
— Ron Staley, Google review