Ductwork
The air you paid to cool — actually gets there.
Leaky, undersized, or crushed ducts throw away up to 30% of your cooling. We seal, repair, or replace with craftsmanship you'd be proud to show off.
What you get
Honest work, done right.
Great ductwork is invisible when it's right and impossible to ignore when it's wrong. We test, seal, and rebuild — no guessing, no shortcuts.
- Full duct inspection with airflow readings
- Aeroseal and mastic sealing
- Full attic and crawlspace replacements
- Airflow balancing room-by-room
- Insulation upgrades for hot attics
How it works
Four steps. No surprises.
Inspect
We map every run, measure static pressure, and find every leak.
Report
You see photos, readings, and a clear list of what needs work.
Fix or replace
Small leaks? Seal them. Whole system undersized? We rebuild.
Re-test
We measure airflow again to prove the improvement.
Signs to watch for
Not sure if it's time to call?
If any of these sound familiar, get in touch before a small issue turns into a bigger one. A quick call is always free.
- Rooms that are always hotter or colder than the rest
- Weak airflow from certain vents
- Visible dust settling right after cleaning
- AC or heater runs constantly but never catches up
- High energy bills with no change in usage
- Whistling, popping, or rumbling in the ducts
- Ductwork over 20 years old or crushed in the attic
- Allergy or asthma symptoms worse indoors
What's included
Every visit, the same standard.
Static pressure test
We measure how hard your system is fighting the ductwork — the number that actually predicts problems.
Photo report
Attic and crawlspace photos so you see exactly what we see.
Sealing or replacement
Aeroseal, mastic, and mechanical seals — or a full rebuild if the bones are wrong.
Airflow balancing
Room-by-room CFM readings so every space gets its fair share of air.
Insulation upgrade
R-8 duct wrap where SoCal attics get brutal — keeps cold air cold on the way to your rooms.
Clean-up
We haul the old duct out, vacuum the attic access, and leave the house cleaner than we found it.
Why Airsun
The difference is in the details.
Measured, not guessed
We use manometers and flow hoods — real numbers before and after, so improvement is provable.
Right-sized every time
Undersized ducts are the number-one HVAC problem in SoCal. We fix the root cause.
Clean craftsmanship
Straight runs, supported takeoffs, sealed boots — the kind of work you'd want in your own attic.
Whole-system thinking
Ducts, filtration, and equipment work together. We tune all three, not just the loudest one.
Bilingual crew
Clear communication in English or Español, from the estimate to the final walkthrough.
Licensed & insured
California Contractor's License #1142130. Liability and workers' comp on every job.
Free · No pressure
Not sure what you need? Book a free estimate.
A licensed Airsun tech will diagnose the issue and give you a written quote — no pressure to book.
FAQ
Good questions, straight answers.
+How do I know if my ducts leak?
Hot rooms, cold rooms, dusty vents, or an AC bill that keeps climbing — those are all classic signs.
+Is duct sealing enough or do I need replacement?
Depends. If the ducts are undersized or 30+ years old, replacement pays for itself. We'll show you the numbers.
+How long does a full replacement take?
Most homes are one to two days, and we protect your floors and furniture every step.
+Will you clean my existing ducts?
Yes — full duct cleaning is available on its own or as part of a sealing or replacement job.
+Can new ductwork lower my energy bill?
Often, yes. Tighter ducts and better airflow mean your system runs less to hit the same temperature.
Free · No pressure
Book your free estimate today.
Same-day service across Orange County and the Inland Empire. Honest quote, no obligation.