Summer Savings — limited-time offers on AC service & new installsSee current offers →
2630 Walnut Ave, Suite G, Tustin, CA Lic. #1062690
24/7 Emergency ServiceCall: (949) 933-3130
Gas Furnaces

Gas Furnaces in Orange County

Safe, efficient gas furnace repair, installation, and maintenance. Certified technicians, upfront pricing, available 24/7.

★★★★★ 5.0 on Google · 200+ reviews
★★★★★ Yelp · 180+ reviews
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5-Star Rated
Licensed & Insured
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Gas Furnaces

A gas furnace delivers fast, powerful heat for cold Orange County nights. We install, repair, and safety-check all major gas furnace brands, including high-AFUE Bryant models that cut fuel waste. From a furnace that will not light to a full replacement, we keep your home warm and safe.

Highlights

High-efficiency high-AFUE models
Heat-exchanger safety inspections
Carbon monoxide safety checks
Same-day no-heat repairs
Financing on new furnaces
Two-stage and variable-speed options

How we can help

Repair
Fast diagnosis and repair, same-day on most issues.

Installation
Right-sized, efficient new equipment with financing.

Maintenance
Tune-ups that protect efficiency and lifespan.

Frequently Asked Questions

How much does a new furnace cost?
Most gas furnace replacements run about $4,000 to $9,000 installed, depending on size and efficiency. Estimates are free.
Is my furnace safe?
We inspect the heat exchanger and check for carbon monoxide on every visit to keep your home safe.
How long do furnaces last?
Typically 15 to 20 years with regular maintenance.
Should I repair or replace my furnace?
If it is over 15 years old, needs a major repair, or short-cycles, a replacement often pays off. We give you honest options.

Helpful HVAC Terms

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

Heat ExchangerTransfers heat to your air; a crack can leak carbon monoxide.IgniterHeats up to light the burners – the modern replacement for a pilot light.Flame SensorConfirms the burner lit; when dirty, the furnace shuts itself off.Gas ValveControls the flow of gas to the burners.Blower MotorPushes heated or cooled air through your ducts.AFUEFurnace efficiency rating – the percentage of fuel turned into usable heat.
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 any new system or major repair — free, with no obligation.
No obligation. Cannot be combined with any other offer.

$50 OFF

Heating or Furnace Repair

Save on any furnace or heating repair from our certified comfort technicians.
Cannot be combined with any other offer. Mention when you call.

$89

Furnace Tune-Up & Safety Inspection

A complete furnace tune-up and safety inspection to keep your home warm and safe.
Per system. Cannot be combined with any other offer.

$500 OFF

A New Furnace

Save $500 on a brand-new high-efficiency furnace or heating system installation.
On qualifying systems. Cannot be combined with any other offer.
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
Areas We Serve Across Orange County
Family-owned HVAC repair, installation & maintenance near you
TustinIrvineAnaheimSanta AnaOrangeGarden GroveFullertonPlacentiaVilla ParkYorba LindaWestminsterFountain ValleyHuntington BeachCosta MesaNewport BeachNewport CoastLake ForestFoothill RanchPortola HillsMission ViejoRancho Santa MargaritaCoto de CazaTrabuco CanyonLadera RanchLas FloresLaguna HillsLaguna WoodsLaguna NiguelLaguna BeachAliso ViejoDana PointSan Juan CapistranoSan ClementeCapistrano Beach
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