DUCT SEALING PROS · ST. GEORGE, UTAH

About Duct Sealing Pros: A Duct Sealing Company St George Homeowners Can Verify

Duct Sealing Pros is a duct sealing company St George homeowners can verify. We pressure-test your ducts, seal the leaks with mastic and UL 181B-FX foil tape, and test again so you can see the before-and-after numbers.

Call (435) 281-0395

What a duct sealing company St George homeowners can trust looks like

Duct sealing company St George technicians sealing duct connections at a furnace with mastic

We do one job: we find and fix leaks in the duct systems of homes in St. George and the rest of Washington County. We do not sell furnaces or air conditioners, so the only thing we have to offer you is a tighter duct system and the numbers that prove it.

That focus shapes everything on this site. Every page explains what we test, what we measure and what we would tell a neighbor. A duct sealing company St George residents rely on should be able to show its work, so we measure leakage before we touch anything and again when we finish. Choosing a duct sealing company St George homeowners can hold accountable starts with that proof.

Our office is at 3430 S River Rd, St. George, UT 84790, and you can reach us at (435) 281-0395. Tell us which rooms give you trouble and we will explain what a duct leakage test involves before you commit to anything.

How a job works from the first call to the final test

Talk first. You tell us which rooms run hot, what your bills look like and where your ducts run. We explain the process and what it is likely to cost.
Test. We pressure-test the whole duct system to measure how much air escapes. This is the baseline number.
Find the leaks. We inspect joints, boots, takeoffs and the connection at the air handler, usually in the attic, to see where the air is going.
Seal. We seal with mastic and UL 181B-FX foil tape where we can reach, and talk through aerosol sealing where the leaks are out of reach.
Test again. We repeat the pressure test and give you the before-and-after numbers.

Most homes take 2 to 8 hours, and about 4 hours is typical, according to Angi. Plan to be home during the job. The full method is on our testing standards page.

The materials we use and the ones we refuse to use

Cloth duct tape is not a sealant. In an attic that can reach 120°F, it heats up, cools down and lets go. We use materials built for the job:

Mastic, a thick paste brushed over seams and joints, applied thick enough that it will not crack. See our mastic and foil tape sealing page.
UL 181B-FX foil tape, the listed tape for flexible duct connections, never ordinary cloth tape.
Aerosol sealant for leaks you cannot reach by hand, when the duct system suits it. NREL found aerosol plus manual patching sealed 70 to 90% of leakage, versus 40 to 50% for manual sealing alone.

Holes larger than about ½ inch need to be repaired by hand before any aerosol is used. We check for them during the first test.

What we will tell you even when it costs us the job

If your ducts turn out to be tight, we will say so and you keep your money. If the ducts are crushed, disconnected or too far gone, we will tell you that sealing will not fix them and walk you through duct repair or replacement. If the real problem is your air conditioner, insulation or windows, we will say that too.

You can compare the options yourself on our page about sealing versus replacing, cleaning or insulating ducts. Ask any contractor, us included, for an itemized price that separates testing, repairs, sealing and the retest. Our duct sealing cost guide shows published price ranges to hold against any quote.

Where we work

We work across the St. George valley and nearby Washington County towns: St. George, Washington, Santa Clara, Ivins, Hurricane, La Verkin, Toquerville, Leeds and Springdale. See the full service area page for ZIP codes and neighborhoods. As a local duct sealing company St George homeowners can call directly, we answer your questions before you book.

Frequently asked questions

Do you test the ducts before sealing them?

Yes. We pressure-test first to get a baseline, seal, and test again. The difference between the two numbers is the result you are paying for.

What do I get when the job is finished?

You get the before-and-after leakage numbers and a plain explanation of what we found and what we sealed.

Do you replace air conditioners or furnaces?

No. We test, seal and repair ducts only, so our advice about your equipment is not tied to a sale.

How do I book a duct leakage test?

Call (435) 281-0395 and tell us which rooms are giving you trouble. We will explain what the test involves and schedule it.

Sources

Ready to find out where your cool air is going?

Call us and tell us which rooms are giving you trouble. We will explain what a duct leakage test involves and book your duct sealing services St George crews can finish before the next heat wave.