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2630 Walnut Ave, Suite G, Tustin, CA Lic. #1062690
24/7 Emergency ServiceCall: (949) 933-3130
Ductwork

Ductwork Repair, Sealing and Installation in Orange County

Leaky, aging ducts waste energy and hurt comfort. We inspect, seal, repair, and replace ductwork to keep every room comfortable and your bills lower. Available 24/7.

★★★★★ 5.0 on Google · 200+ reviews
★★★★★ Yelp · 180+ reviews
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Ductwork Services in Orange County

Your ducts carry every bit of heated and cooled air through your home. When they leak, sag, or clog, you can lose 20 to 30 percent of your conditioned air – driving up bills and leaving rooms uneven. South County Air Services inspects, seals, repairs, and replaces ductwork across Orange County.

What better ducts do for you

Lower energy bills
Even temperatures room to room
Cleaner indoor air
Less dust and allergens
Quieter operation
Longer equipment life

Our ductwork services

Duct Inspection and Testing
We pinpoint leaks, blockages, and damaged runs.

Duct Sealing
Seal leaks at the source to stop wasted air and high bills.

Duct Repair
Fix crushed, disconnected, or deteriorated ducts.

Duct Replacement and Installation
New, properly-sized ductwork for efficient airflow.

Signs your ducts need attention

  • High energy bills with no change in usage
  • Some rooms too hot or too cold
  • Excess dust around the home
  • Musty or stale odors when the system runs
  • Weak airflow from the vents
  • Visible damage or disconnected ducts in the attic

Frequently Asked Questions

How much does duct sealing cost?
Most homes run about $500 to $2,000 depending on access and size. The assessment is free.
How do I know if my ducts are leaking?
High bills, uneven room temperatures, and excess dust are common signs. We test to confirm before recommending work.
Should I repair or replace my ducts?
We repair where it makes sense and only recommend replacement when ducts are badly deteriorated or undersized.

Helpful HVAC Terms

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

PlenumThe central box where conditioned air enters and leaves the ducts.Supply & Return DuctsSupply carries air to your rooms; return pulls it back.Duct SealingClosing leaks so you are not paying to heat and cool your attic.Static PressureThe blood pressure of your ducts; too high strains the blower.DamperAn adjustable plate that controls airflow to rooms or zones.Register / VentThe grille where conditioned air enters a room.
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.

FREE

Duct Inspection

A full inspection of your ductwork to catch leaks, blockages & airflow loss that quietly waste energy.
Cannot be combined with any other offer.

$500 OFF

Duct Replacement

Save $500 on a full ductwork replacement for better airflow, efficiency, and comfort.
On qualifying duct replacement. 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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