HVAC, AC & Heating Services in Tustin, CA
Fast, reliable HVAC repair, maintenance, and installation from certified local technicians. Upfront flat-rate pricing, honest recommendations. Text us for a faster response.
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Same-day response on most requests. No obligation.
$89 Furnace Tune-Up in Tustin
Regularly $129. A full furnace inspection, cleaning and safety check before the first cold night. No plan or membership.
Replacing your system? $1,000 off a new high-efficiency system (17 SEER or higher).
For a faster response, text. Limited time. Cannot be combined with any other offer.
Your local, Tustin-based HVAC team
We don’t just serve Tustin — we’re headquartered right here in Tustin, at 2650 Walnut Ave, Suite P. When you call South County Air Services, you’re calling neighbors: a local Tustin company that can be at your door fast, from Old Town Tustin and Tustin Ranch to Tustin Legacy, Columbus Square, and North Tustin. Being based here means we know the local housing mix — the historic homes near Old Town, the newer builds around Tustin Legacy and The District, and everything in between.
Our licensed technicians cover both Tustin ZIP codes — 92780 and 92782 — with same-day AC repair, furnace and heat pump service, new installations, and tune-ups. Whether you’re near Tustin Marketplace, the historic MCAS blimp hangars, or Peters Canyon, we respond fast because we’re right around the corner. Call (949) 933-3130 or request service online.
South County Air Services provides fast, reliable air conditioning and heating service in Tustin, California. From the historic bungalows of Old Town Tustin to the newer homes of Tustin Ranch and Tustin Legacy, we know the local housing stock well — in fact, our shop is right here in Tustin. We’re a local, family-owned and owner-operated team offering same-day appointments, upfront flat-rate pricing, and Mon-Sat emergency service.
AC & heating services in Tustin
Maintenance
Spring & fall tune-ups that keep your system efficient and prevent breakdowns.
Repair
Same-day & Mon-Sat repair for AC, furnaces, heat pumps and thermostats — all brands.
Installation
New high-efficiency systems, correctly sized, with financing available.
Why Tustin homeowners choose us
- Local, family-owned & owner-operated — you talk to a real person
- Same-day service & Mon-Sat emergency response
- Upfront, flat-rate pricing — no surprises
- Background-checked, factory-trained technicians
- Licensed & insured (CA License #1062690)
- 5-star rated on Google & Yelp
Furnace & heater repair in Tustin
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 Tustin. 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 Tustin:
- Flame sensor cleaning or replacement: $250–$350
- Hot-surface igniter: $350–$450
- Pressure switch or inducer check: $400–$600
- Inducer motor: $600–$1,200
- Control board: $450–$900
- Blower motor: $900–$1,400
- Thermostat replacement: $350–$500
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 Tustin 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.
Tustin HVAC FAQ
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Need AC or heating help in Tustin?
Same-day & Mon-Sat service across South Orange County.
Helpful HVAC Terms
Quick definitions for the parts and terms behind your comfort system.
Tustin HVAC guide for homeowners
Old Town’s aging furnaces, Tustin Legacy’s newer systems, and how the Tustin permit process works: read our Tustin HVAC guide. Wondering what a repair should cost? See the 2026 repair cost guide or get instant equipment pricing.
Find us in Tustin
South County Air Services · 2650 Walnut Ave, Suite P, Tustin, CA 92780 · Mon–Fri 7am–6pm, Sat 7am–1pm, Sun closed · Call or text (949) 933-3130
Current specials & offers
Furnace Safety Tune-Up
New System Quote
A New Full System
Any Repair
What your neighbors say
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!
Comfort now, pay over time.
$0 down and flexible monthly financing available on qualifying systems, with approved credit.
Let’s make your home comfortable again.
Same-day service from certified local pros — open Mon-Sat.