Duct Sealing in Salt Lake City - Tested First, Written Price Second

Fast, Reliable Duct Sealing Across Salt Lake City

Duct sealing in Salt Lake City typically costs $350 – $850 for a whole-home system, with most jobs completed in a single visit. We seal leaks at joints, boots, and plenums using mastic and metal-backed tape rated for the temperature swings your ducts see through a Wasatch Front winter.

Call (361) 326-5060

We’ve worked in homes from the Avenues down to Rose Park and out toward West Jordan, and the pattern is consistent: Salt Lake City houses lose 20 – 30% of their conditioned air through leaks before it ever reaches a room. That’s heated air you’re paying for while your furnace runs overtime during inversion season. Roy Castellanos and our crew at Hollis Air Duct Cleaning treat every Salt Lake City job under The Garrison Standard, which means a written price before we touch anything, background-checked uniformed technicians, and the 365-Day Done Right Promise backing the work. Call us at (361) 326-5060 for a free estimate.

Why Hollis Air Duct Cleaning Is Salt Lake City’s Preferred Duct Sealing Company

Our reputation in Salt Lake City was built one written estimate at a time. Homeowners here have dealt with enough contractors who quote low and invoice high, so we flipped the model: the price you sign off on is the price you pay, period. No per-vent add-ons, no “we found another problem” surprises once the van is in your driveway.

We answer our phones live, 24 hours a day, 7 days a week. When you’re staring at a winter heating bill that’s $80 higher than it should be because your ducts are bleeding air into the attic, you don’t want voicemail. You want a person who can get you scheduled.

Our technicians arrive uniformed and background-checked, with professional-grade equipment from Nikro and Abatement Technologies. They know the difference between a 1920s Sugar House bungalow with original galvanized ducting and a 2015 Draper build with flex runs that sag where the strap failed. That local housing knowledge matters because the sealing approach changes with the material. And every repair is covered by our 365-Day Done Right Promise: if the seal fails within a year, we come back and make it right at no charge, including a free second visit.

Duct Insulation in Salt Lake City

Duct Insulation in Salt Lake City addresses a specific problem created by the Wasatch Front’s temperature extremes: unconditioned attic or crawlspace runs that bleed heat in winter and gain it in summer. We wrap exposed metal or flex ducting with formaldehyde-free fiberglass insulation jacket, sealed at seams with mastic, to maintain the temperature of the air your furnace or AC already paid to condition.

Most Salt Lake City homeowners need duct insulation when they’re already losing efficiency to leaks we’ve sealed, or when they have original 1950s-60s ranch ducting in Rose Park or Millcreek that was never insulated to begin with. A typical whole-home insulation job runs $500 – $1,200 depending on linear footage and access difficulty.

Attic Runs in Older Homes

Pre-1980s homes in the Avenues and Sugar House often have bare metal trunk lines running through unheated attics. In January, that attic might be 15 degrees while your furnace is pushing 120-degree air. Without insulation, that air loses 10 – 15 degrees before it reaches your bedroom vent. We measure the temperature drop with an infrared gun, then jacket the runs with R-6 or R-8 insulation depending on the space.

Flex Duct in Tight Newer Builds

Newer subdivisions in West Jordan and Draper use flexible ducting for its ease of installation, but builders sometimes spec thin insulation to cut costs. We upgrade to higher-R-value product from Honeywell and Aprilaire, particularly on south-facing attic runs that cook in July.

HVAC Duct Sealing in Salt Lake City

HVAC Duct Sealing in Salt Lake City is the core service that stops conditioned air from escaping through gaps at plenum connections, register boots, and seams between duct sections. We use a two-part approach: a smoke test or pressure test to locate every leak, then sealing with water-based duct mastic for permanent closure, reinforced with metal-backed tape at high-stress joints.

A Salt Lake City homeowner typically needs HVAC duct sealing when rooms heat unevenly, when dust blows from ceiling vents even after cleaning, or when utility bills spike during inversion season without a rate increase. Whole-home sealing generally runs $350 – $850, with larger homes or complex attic systems toward the higher end.

Pressure Testing Before We Seal

We don’t guess where your ducts are leaking. Our Nikro negative-air equipment pressurizes the system and measures airflow loss, giving us a baseline in CFM. After sealing, we test again. The difference is your proof, and we show you both numbers on the written invoice.

Mastic vs. Tape Alone

Hardware-store foil tape fails within two years on Salt Lake City’s temperature swings. We brush on mastic, a thick, flexible compound that cures to a permanent seal and remains pliable from -20°F to 200°F. It’s the standard for commercial HVAC and it’s what we use in your home.

Trusted Brands We Service in Salt Lake City

Our Salt Lake City technicians carry sealing and insulation products from Honeywell, Aprilaire, and Abatement Technologies, the same brands specified in commercial mechanical plans. We stock mastic, metal-backed tape, and insulation jacket locally so we’re not waiting on a warehouse shipment while your furnace runs another week with leaky ducts. For homeowners with integrated filtration or humidification systems, we can assess whether those components are also pulling unfiltered air through gaps, and we source replacement parts without the multi-week delays that plague online orders. If you’re also considering Air Duct Cleaning in Salt Lake City or Dryer Vent Cleaning in Salt Lake City, we can bundle the work and price it as one visit.

Common Duct Sealing Problems We See in Salt Lake City Homes

• Inversion-season overwork. Salt Lake City’s winter inversions trap PM2.5 and wood-smoke particulates in the valley, coating ductwork and filters with a fine, dark grit that homeowners often first notice as black dust around ceiling vents. When your furnace runs 18 hours a day to maintain temperature, that circulation volume pulls more debris through any gap, and the leaks themselves become entry points for attic dust.
• Great Salt Lake dust infiltration. Many homes sit in the path of fine, sticky dust from the exposed dry lakebed, which is pulled into return-air systems during wind events. We’ve found this mineral dust packed around leaky return plenums in homes from Rose Park to the east bench, and it accelerates seal degradation on tape joints.
• Original galvanized ducting in historic neighborhoods. Sugar House and Avenues bungalows often have 80- to 100-year-old metal ducting with rusted seams and failed original seals. The metal expands and contracts dramatically on Salt Lake City’s sub-freezing nights versus 70-degree days, working seams open faster than in milder climates.
• Sagging flex duct in mid-century ranches. 1950s-60s homes in Millcreek and Rose Park sometimes have flex runs that pulled loose from boots or developed kinks where straps failed. The sag creates low points where dust and moisture collect, and the resulting weight pulls additional seams apart over time.

Pricing for Duct Sealing in Salt Lake City, UT

We Also Serve Cities Near Salt Lake City

Our Duct Sealing in Salt Lake City coverage extends throughout the Wasatch Front, including Provo. Whether you’re in a historic Avenues bungalow or a newer build in Draper, our Duct Sealing team travels with the same equipment and the same written pricing standard. Call (361) 326-5060 to check availability for your area.

FAQs About Duct Sealing in Salt Lake City