Ductwork ServicesPhoenix & the East Valley
Duct design, sealing, repair, and replacement from a family-owned Tempe HVAC company that has been fixing Arizona attics since 1964. We measure the leakage, fix the cause, and prove the result.
What Our Duct Crews Do
Everything from a single disconnected boot to a full attic duct system replacement.
Duct Design & Replacement
Manual D sizing for the home you actually have. We replace crushed, undersized, or 1970s flex duct with properly sized trunk-and-branch runs.
Aeroseal Duct Sealing
Interior aerosol sealing that closes leaks you cannot reach by hand — no tearing out drywall, no crawling every inch of attic.
Duct Leakage Testing
Blower door and duct pressure testing with a before/after number, so you see exactly how much air stopped leaking into your attic.
Leak & Disconnect Repair
Separated boots, failed mastic, torn insulation, and disconnected runs dumping cold air above your ceiling get repaired and re-sealed.
New Runs, Returns & Vents
Hot back bedroom or a converted garage? We add supply runs, upsize starved returns, and relocate registers for even airflow.
Duct Insulation & Attic Sealing
R-8 insulated duct and sealed plenums keep 160-degree attic air out of the air you paid to cool.
In Phoenix, Leaky Ducts Are an Expensive Problem
Most Valley duct systems run through an attic that reaches 150°F or more on a July afternoon. Every gap in that system pulls superheated attic air into your supply stream and pushes air you already paid to cool out into the insulation.
That is why homes with a brand-new high-efficiency AC still run all day and still have one bedroom nobody wants to sleep in. The equipment is rarely the whole story — the delivery system is.
Signs Your Ducts Are the Problem
If two or more of these sound like your house, start with a duct inspection.
One room never gets cool while another freezes
Rising summer bills with no change in habits
Dust on furniture within a day of cleaning
Whistling, rumbling, or booming vents
Weak airflow from vents furthest from the unit
AC runs all afternoon and never satisfies the thermostat
How a Duct Job Works With Us
1. Inspect
We photograph the attic, plenums, and every accessible run — you see what we see.
2. Measure
Static pressure, airflow, and duct leakage get measured, not guessed.
3. Scope & Price
A written option sheet: seal it, repair it, or replace it — with the tradeoffs spelled out.
4. Verify
We retest after the work and hand you the before/after numbers.
Why Homeowners Trust SMW With Their Ducts
Family-Owned Since 1964
Three generations of Arizonans serving Arizonans.
NATE-Certified Techs
Highest industry credential. No subcontractors, ever.
We Test, Not Guess
Static pressure and leakage numbers before and after.
Licensed, Bonded & Insured
AZ ROC ROC172364 & ROC337415.
Duct Work Across Maricopa County
Tempe, Phoenix, Mesa, Scottsdale, Chandler, Gilbert, Glendale, Peoria and the rest of the Valley.
View all service areas →Stop Cooling Your Attic
Book a duct inspection and get real measurements, clear options, and no pressure.