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2630 Walnut Ave, Suite G, Tustin, CA Lic. #1062690
24/7 Emergency ServiceCall: (949) 933-3130
Local HVAC – Repair, Maintenance, Install

HVAC, AC & Heating Services in Mission Viejo, CA

Fast, reliable HVAC repair, maintenance, and installation from certified local technicians. Upfront flat-rate pricing, honest recommendations, and a workmanship guarantee on every job. Available 24/7.

★★★★★ 5.0 on Google · 200+ reviews
★★★★★ Yelp · 180+ reviews
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5-Star Rated
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HVAC service across Mission Viejo’s neighborhoods

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 maintenance plan to handle hot inland summers, we respond fast across the city. Call (949) 933-3130 or request service online.

AC condenser replacement at a Mission Viejo home by South County Air Services

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 24/7 emergency service.

AC & heating services in Mission Viejo

Maintenance

Spring & fall tune-ups that keep your system efficient and prevent breakdowns.

Tune-ups in Mission Viejo →

Repair

Same-day & 24/7 repair for AC, furnaces, heat pumps and thermostats — all brands.

Repair in Mission Viejo →

Installation

New high-efficiency systems, correctly sized, with financing available.

Install in Mission Viejo →

Why Mission Viejo homeowners choose us

  • Local, family-owned & owner-operated — you talk to a real person
  • Same-day service & 24/7 emergency response
  • Upfront, flat-rate pricing — no surprises
  • Background-checked, factory-trained technicians
  • Licensed & insured (CA License #1062690)
  • 5-star rated on Google & Yelp

Mission Viejo HVAC FAQ

Do you offer same-day HVAC service in Mission Viejo?
Yes: we offer same-day appointments and 24/7 emergency AC and heating service throughout Mission Viejo and the surrounding South Orange County area. Call (949) 933-3130.
How long does a new system installation take?
Most standard AC or furnace replacements in Mission Viejo are done in a single day. Jobs with new ductwork can take a few days; we give a clear timeline upfront.
How much does a new AC or HVAC system cost?
A typical change-out runs about $5,000 to $12,500 installed; full systems with new ductwork can run higher. We size it right for your Mission Viejo home, offer financing, and give a free in-home estimate.

Need AC or heating help in Mission Viejo?

Same-day & 24/7 service across South Orange County.

📞 Call (949) 933-3130

Nearby areas we serve: Lake Forest · Laguna Hills · Ladera Ranch

Helpful HVAC Terms

Quick definitions for the parts and terms behind your comfort system.

RefrigerantThe fluid that absorbs and releases heat as it cools or heats your home.R-454B (Puron Advance)The new low-GWP refrigerant in Bryant and Carrier 2025+ systems, replacing R-410A.SEER2An AC cooling-efficiency rating; higher means lower energy bills.AFUEFurnace efficiency rating – the percentage of fuel turned into usable heat.BTUBritish Thermal Unit – a measure of heating or cooling energy.TonA measure of cooling capacity; one ton equals 12,000 BTU per hour.
See the full HVAC Glossary →
Limited-time savings

Current specials & offers

Real savings on the services your home needs — just mention these when you call.

FREE

In-Home Estimate

Upfront, no-pressure pricing on a new HVAC system replacement (not repairs) — free, with no obligation.
No obligation. Cannot be combined with any other offer.

$1,000 OFF

A New Full System

Save $1,000 on a brand-new high-efficiency full HVAC system installation.
On qualifying high-efficiency systems. Cannot be combined with any other offer.

$50 OFF

Any Repair

Save on any HVAC repair — plus a free second opinion on a quoted replacement.
Cannot be combined with any other offer. Mention when you call.
5-star rated

What your neighbors say

Real reviews from real Orange County homeowners.
★★★★★

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!

KM

Kelly M.
Verified Yelp review
★★★★★

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.

DM

D. M.
Verified Yelp review
★★★★★

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.

EM

Elena M.
Verified Yelp review
★★★★★

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!

PV

Pat V.
Verified Yelp review
★★★★★

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.

HJ

Heng J.
Verified Yelp review
★★★★★

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!

AS

Alex S.
Verified Google review
★★★★★

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!

KM

Kelly M.
Verified Yelp review
★★★★★

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.

DM

D. M.
Verified Yelp review
★★★★★

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.

EM

Elena M.
Verified Yelp review
★★★★★

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!

PV

Pat V.
Verified Yelp review
★★★★★

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.

HJ

Heng J.
Verified Yelp review
★★★★★

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!

AS

Alex S.
Verified Google review

Comfort now, pay over time.

$0 down and flexible monthly financing available on qualifying systems, with approved credit.

See financing options

Too hot or too cold?

Let’s make your home comfortable again.

Same-day service from certified local pros — available 24/7.

Book online

(949) 933-3130

HVAC in Mission Viejo: what local homeowners should know

Many Mission Viejo homes date to the 1970s–80s master-planned build-out around Lake Mission Viejo, so a lot of original furnaces and AC systems are now well past their expected lifespan. Hillside lots and HOA guidelines affect where a condenser can go and how it is screened. Whether you need a same-day repair or are weighing a heat-pump upgrade to cut summer bills, we give honest options — repair when it makes sense, replace only when it truly does.

South County Air Services is a family-owned, owner-operated HVAC company based in Tustin, CA (CSLB license #1062690), holding a 5.0-star Google rating across 205+ reviews. We serve all of Orange County 24/7 with flat-rate pricing, and as a Bryant dealer we install, repair, and maintain air conditioning, heating, heat pump, and indoor-air-quality systems. Because the licensed owner runs the jobs — not a commissioned salesperson — our customers consistently say we give honest recommendations and do not upsell.

What Mission Viejo-area customers say

★★★★★

“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

Read all 228 five-star Google reviews →

Common questions from Mission Viejo homeowners

How much does AC repair cost in Mission Viejo?

Most AC repairs in Mission Viejo run about $150–$600 depending on the part — a failed capacitor is roughly $150–$300 and a refrigerant recharge $300–$600, plus a diagnostic fee. We quote a flat rate before any work starts, so there are no hourly surprises.

How much does it cost to replace an AC or HVAC system in Mission Viejo?

A like-for-like AC or furnace replacement in Mission Viejo typically runs $8,000–$14,000, and higher-efficiency or full heat-pump systems $14,000–$21,000+, depending on size, SEER2 efficiency, ductwork, and permit or HOA factors. You get a written flat-rate quote, and we never upsell equipment you do not need.

Do I need a permit to replace my AC or furnace in Mission Viejo?

Yes. California requires a permit for any AC or furnace replacement in Mission Viejo — even a like-for-like swap — plus a HERS test (duct-leakage and refrigerant verification). As your licensed contractor (CSLB #1062690) we pull the permit and handle the inspection, so the work is code-compliant and documented for resale.

How long does an AC system last in Mission Viejo?

With regular maintenance, most AC systems in Mission Viejo last about 12–15 years, and up to about 20 with good care. Mission Viejo’s inland summer heat means longer run times, so skipping maintenance shortens that noticeably.

Why is my AC not blowing cold air?

The most common causes are low refrigerant from a slow leak, a failed capacitor, a frozen evaporator coil, or a clogged air filter. It is usually a repair, not a replacement — we diagnose the actual cause and show you the failed part before quoting.

How often should I change my HVAC filter?

Every 60–90 days for a standard 1-inch filter, or monthly during heavy summer use or with pets. It is the cheapest thing you can do to protect the system and keep energy bills down.

Do you offer same-day or emergency HVAC repair in Mission Viejo?

Yes — same-day and 24/7 emergency AC and furnace repair across Mission Viejo and south Orange County. Call (949) 933-3130 and we will get a technician out fast with a flat-rate price before any work begins.

Who is the best HVAC company in Mission Viejo?

We will let the reviews speak — South County Air Services holds a 5.0-star rating across 200+ reviews. Family-owned, owner-operated, licensed (CSLB #1062690), a Bryant dealer, with flat-rate pricing and no upsells.

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