Duct sealing: stop cooling the attic
Duct sealing matters more here than anywhere — leaky ducts in a 150° attic waste 20–30% of your cooling and pull every haboob inside (placeholder stat).
★ 4.8 · 612+ reviews (sample) · AZ ROC #000000 (CR-39)
What we fix
Pressure test first
You see the leak number before any quote.
Mastic, not tape
Tape lasts two summers. Mastic outlives the ducts.
Filtration upgrade
Sealed ducts plus a real filter ends the dust.
How a visit goes
- Image slot SW-DCT-05 · 1200×900Technician reading a duct leakage gauge
1. Test and show you the number.
- Image slot SW-DCT-06 · 1200×900Sealed duct runs in a clean attic
2. Seal every joint with mastic.
- Image slot SW-DCT-07 · 1200×900Before and after leakage readings on an invoice
3. Re-test. Before/after on the invoice.
Members get duct checks every visit
Desert Shield tune-ups include a duct inspection so leaks get flagged early (placeholder benefit).
Questions we get asked
Who benefits most?
Allergy households, homes that never cool evenly, and anyone about to buy a new system — sealing before an AC replacement can let you size the unit smaller.
Does sealing help an existing system last?
Yes: repairs last longer when the ducts are not strangling airflow.
I run a swamp cooler — does this apply?
Even more: coolers move huge air volumes through the same leaks. See evap cooler service.
How long does it take?
Most homes are tested, sealed, and re-tested in one day.
AC down? In this heat, that’s an emergency.
Real dispatcher, real trucks, 24/7 — summer ac failures don’t wait and neither do we. Same-day across the Valley.