Duct Sealing in Salt Lake City
Leaky ducts waste 20–30% of the air you pay to heat and cool. We measure where it’s being lost, then seal and insulate so it reaches your rooms.
Leaky ducts quietly waste the air you pay for
Most duct systems leak at the joints, seams, and connections — and a lot of that ducting runs through unconditioned attics and crawlspaces. Every bit of air that escapes is air you paid to heat or cool, dumped where it does no good. Worse, leaks on the return side pull in dusty, dirty attic air and push it through your home. Sealing those leaks is one of the highest-return improvements you can make — lower bills, more even temperatures, and less dust. See how it fits the bigger picture in our HVAC systems guide.
Got an HVAC question?
Ask it on the online quote page: a real answer, a second opinion, or a firm quote, whichever you need.
Sealing the ducts — especially in the attic
Find the leaks
We inspect the duct runs, joints, boots, and connections — including the attic and crawlspace runs most leaks hide in — and measure static pressure so we know how the system is actually performing before and after.
Seal them properly
We seal the leaks with mastic and proper materials at the joints and connections (not just a strip of cloth tape that dries out and falls off), so the seal lasts. Disconnected or damaged sections get reconnected or replaced.
Insulate the attic runs
Sealing is only half the job in an attic that bakes in summer and freezes in winter, so we insulate the runs and the air holds its temperature on the way to your rooms. On one job we measured a vent delivering air 14°F warmer than the A/C coil had produced it, and that was from a single uninsulated attic duct. The same uninsulated run bleeds off furnace heat in January, which is why this work pays for itself in both seasons.
Verify the improvement
We re-check airflow and static pressure so you can see the difference, and the readings go into your written System Health Report. If the ducts need more than accessible sealing — a full re-run or a replacement — we quote and do that work too, and you get every finding in writing. In the summer we can also set up temporary cooling while you wait. See ductwork and airflow work.
The payoff
- Lower bills — you stop paying to condition your attic.
- More even temperatures — rooms that ran hot or cold get their fair share of air.
- Less dust — sealed returns stop pulling attic dust into your home.
- A system that lasts — better airflow means less strain on the furnace and the A/C.
The ductwork that keeps you cool in August is the same ductwork that carries your heat in January, so this is work that pays you back twice a year. We can usually be out the same day — days, evenings and weekends or Saturday.
Duct sealing across the whole Wasatch Front
We cover the Wasatch Front and the Wasatch Back, from Ogden down to Provo and from Grantsville across to Coalville and Heber. If your home is on this map, we can seal and insulate the accessible ductwork.
Duct sealing questions
Is there duct sealing near me in Salt Lake City?
Yes. Canyon Comfort seals ducts and does airflow work across the Wasatch Front, days, evenings and weekends Monday through Friday and weekends, and appointments are often available. Call or text 801-960-5925.
Who is the best duct sealing company in Salt Lake City?
The best choice is a licensed, insured, 5-star-rated local company that gives upfront pricing and straight advice. Canyon Comfort is a locally owned, repair-only HVAC company providing duct sealing across the Wasatch Front, with free online second opinions.
How much does duct sealing cost in Salt Lake City?
Our Airflow Diagnostic is $80. We also offer free online second opinions, so you can compare and choose what fits your budget.
Do you offer duct sealing in Salt Lake City and the Wasatch Front?
Yes — Canyon Comfort provides duct sealing across the Wasatch Front, from Ogden to Provo and Grantsville to Coalville and Heber, with upfront pricing.
How much air do leaky ducts waste?
Commonly 20–30% of conditioned air. In homes with ducts running through a hot attic, sealing and insulating them is one of the highest-return comfort and efficiency improvements available. Considering Aeroseal? See whether interior duct sealing is worth it →
Will sealing my ducts lower my bills?
Usually yes. You stop paying to heat and cool your attic or crawlspace, and the system does not have to run as long to keep the house comfortable.
Does duct sealing help with heating in the winter?
Yes, just as much as it helps with cooling. A leaky, uninsulated attic run loses furnace heat on the way to the register, so the furnace runs longer, the far rooms never warm up, and the gas bill climbs. Sealing and insulating those runs fixes the same problem in both seasons.
When can you come out to look at my ducts?
Often the same day you call, in one of our service windows: Monday through Friday from 7am to 10pm, and Saturday from 8am to 10pm. We are a repair-only HVAC company, and most calls turn into an evening appointment. Call or text 801-960-5925.
Is duct tape good for sealing ducts?
No. Standard cloth duct tape dries out and falls off within a few seasons, which is exactly why we seal with mastic and proper materials at the joints instead. That seal is still there years later.
Will duct sealing help with the dust in my house?
Yes, often a great deal. Leaks on the return side pull dusty attic and crawlspace air straight into the system, and sealing them cuts the amount of dust circulating through your home.
Stop paying to heat and cool your attic
Book an airflow assessment and we will find the leaks, seal and insulate the accessible runs, and show you the before-and-after numbers in a written System Health Report. Appointments are often available across the Wasatch Front, days, evenings and weekends.
Portable A/C rental while you wait on a repair
Usually same-day: two high-efficiency portable units and a portable swamp cooler, $150 plus $20 a day.
What customers say
Reviews shown as they appear on Google Maps. See every Google review →