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
Local HVAC – Repair, Maintenance, Install

HVAC, AC & Heating Services in Rancho Santa Margarita, 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
Google Guaranteed
5-Star Rated
Licensed & Insured
Same-Day Service

Get a fast free quote

Same-day response on most requests. No obligation.

Name(Required)
Your info stays private — no spam, ever.

HVAC technician servicing an air conditioner in Rancho Santa Margarita, CA

South County Air Services provides fast, reliable air conditioning and heating service in Rancho Santa Margarita, California. Rancho Santa Margarita’s newer planned neighborhoods sit inland where summer heat is real, so efficient cooling and regular maintenance go a long way. 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 Rancho Santa Margarita

Maintenance

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

Tune-ups in Rancho Santa Margarita →

Repair

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

Repair in Rancho Santa Margarita →

Installation

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

Install in Rancho Santa Margarita →

Why Rancho Santa Margarita 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

Rancho Santa Margarita HVAC FAQ

Do you offer same-day HVAC service in Rancho Santa Margarita?
Yes: we offer same-day appointments and 24/7 emergency AC and heating service throughout Rancho Santa Margarita and the surrounding South Orange County area. Call (949) 933-3130.
Do you charge a service-call or diagnostic fee?
Most companies charge a $75 to $150 service-call fee to diagnose the issue. Call us for current details and seasonal offers; we are upfront about every cost before work begins.
Why is my AC running but not cooling?
Usually a dirty filter, low refrigerant, a frozen or dirty coil, or a failed capacitor. Check the filter and thermostat first; if it is still warm, we can be out same-day in Rancho Santa Margarita.

Need AC or heating help in Rancho Santa Margarita?

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

📞 Call (949) 933-3130

Nearby areas we serve: Coto de Caza · Las Flores · Mission Viejo

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 any new system or major repair — 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
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
Call Text Us