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Liberty Duct & Vent Liberty Duct & Vent · SLC
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Aeroseal-Style Duct Sealing

Leaky ducts waste 20–30% of conditioned air. We seal joints, seams, and connections from inside.

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What This Service Covers

The Full Scope

Most homes lose 20–30% of HVAC output through leaky duct connections. We seal from inside the duct using aerosolized polymer that bonds at every leak point — no tear-out, no drywall damage.

What's Included

  • check_circle Pre/post leakage measurement
  • check_circle Internal aerosol sealing
  • check_circle Mastic seal at major joints
  • check_circle Up to 90% leak reduction
  • check_circle Lower energy bills
  • check_circle Better room-to-room airflow

Most "high-efficiency" HVAC upgrades waste 20-30% of their gains through leaky ducts. Sealing is the highest-impact retrofit available — and it pays back in energy bills within 2-3 years.

Diagnostic

6 Signs You Need Air Duct Sealing — Now

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Hot and cold rooms within the same level

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High energy bills despite a recently replaced HVAC

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Visible disconnected or torn duct runs in the attic / crawlspace

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Whistling sounds at register edges

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Rooms farthest from the air handler underperform constantly

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Recent blower-door test shows >25% duct leakage

Who Calls Us Most

3 Households That Get the Biggest Win

01

Homes with attic-routed ductwork

Attic ducts often leak 30%+ — sealing returns conditioned air to the right rooms instead of the attic.

02

Recent HVAC replacement

A new high-SEER unit on leaky ducts loses most of its efficiency gains. Seal the ducts to capture the upgrade.

03

Multi-story homes with poor 2nd-floor cooling

Long supply runs to upstairs leak before they get there. Sealing recovers the lost airflow.

Utah Climate × This Service

Why Air Duct Sealing Is a Different Job in Utah

Inversion. Wildfire smoke. Dry-air winters. Lake-effect dust. Each one shifts how this service performs — and when it pays off most.

home Dec–Feb

Winter Heat Loss to Attic

Leaky ducts in cold attics waste 20–30% of furnace output. Sealing immediately recovers conditioned air to living space — measurable on the next bill.

wb_sunny Jun–Aug

Summer AC Loss to Attic

Same leaks, opposite season — AC dumping cold air into 130°F attics. Sealing pays back in 1–2 summers from energy savings alone.

cyclone Dec–Feb

Inversion Pollutant Pulled In

Negative pressure at leaky returns pulls polluted attic / crawlspace air directly into the breathing zone. Sealing eliminates that infiltration path.

local_fire_department Jul–Sep

Wildfire Smoke Infiltration

Leaky duct returns drag smoke-laden attic air into the home during smoke events. Sealing closes one of the largest infiltration paths.

Best Time to Schedule

When to Book — by Season

Q1

Spring

Best window — moderate temps make pre/post leakage testing accurate.

Q2

Summer

Sealing during AC season has immediate energy-bill payback.

Q3

Fall

Pre-winter sealing prevents heat loss into unconditioned spaces.

Q4

Winter

Sealing now reduces furnace runtimes immediately.

Set The Record Straight

Myths vs. Facts

Myth

"Mastic alone is enough."

Fact

Mastic seals visible joints. Hidden leaks behind drywall need internal aerosol sealing.

Myth

"Foil tape is a permanent seal."

Fact

Standard tape fails within 18 months. Only UL 181-listed mastic + aerosol sealing is permanent.

Myth

"Sealing only matters for old houses."

Fact

New construction is just as leaky. Most builders don't blower-door test ducts. We do.

Between Visits

Air Duct Sealing — Homeowner Tips

Things you can do between Liberty visits to maximize the result. No upsell — just better outcomes.

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After sealing, take a static-pressure reading photo — your baseline. Re-test annually to confirm seal is still holding.

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Watch utility bills for the 12 months post-sealing — most homes see a 15–25% reduction.

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Walk the attic / crawlspace once a season and look for visible damage (rodents, falling insulation, cracked tape).

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Test register airflow by holding a tissue near each grille — should pull steady, not flutter or stall.

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Avoid running negative-pressure exhaust (large kitchen hoods, dryers) without makeup air — pulls attic dust into the home.

warningRed Flags

Stop & Call Us Same Day

If you see any of these, do not wait for your next scheduled visit.

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Hot/cold rooms returning within 6 months of sealing — seal has failed somewhere.

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Whistling at register edges that did not exist before — joint failure under pressure.

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Energy bills creeping back up to pre-seal levels — air loss has resumed.

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Honest Split

DIY vs. Liberty — Who Should Do What

Task DIY Pro Why
Visual joint inspection check_circle — Annual. Look for tape detaching.
Tissue airflow test at registers check_circle — Quarterly.
Mastic application on accessible joints check_circle — UL 181 mastic only. Foil tape fails.
Aeroseal-style internal sealing — check_circle Specialized equipment + pre/post leakage measurement.
Hidden duct sealing in walls — check_circle Requires aerosol injection through registers; cannot be DIY.
Pricing

Air Duct Sealing — Cost Breakdown

Flat-rate. Written. Locked before work. No surprises.

Service Item Price
Pre-seal leakage measurement $129
Manual mastic seal — accessible joints $299–$599
Aeroseal-style internal aerosol seal $1,099+
Combo: clean + seal package $799+
Post-seal verification report Included

Final price varies by home size + system count. Always quoted in writing before work begins. Full pricing →

Frequently Asked Questions

How do I know my ducts leak? add

Hot/cold spots between rooms, dusty registers shortly after cleaning, high energy bills despite a new HVAC, or visible disconnected duct sections in attic/crawlspace.

Where We Deliver

Air Duct Sealing Across 31 Wasatch Front Cities

Salt Lake City 0 mi Sandy 14 mi West Jordan 13 mi South Jordan 16 mi Draper 19 mi Murray 8 mi Millcreek 6 mi Holladay 9 mi Cottonwood Heights 12 mi Midvale 11 mi West Valley City 7 mi Bountiful 10 mi Centerville 13 mi Farmington 17 mi Kaysville 21 mi Layton 25 mi Clearfield 28 mi Ogden 38 mi Roy 33 mi Park City 32 mi Heber City 45 mi Tooele 35 mi Lehi 27 mi American Fork 31 mi Pleasant Grove 34 mi Orem 38 mi Provo 44 mi Herriman 22 mi Riverton 20 mi Bluffdale 22 mi Magna 14 mi

Pair Air Duct Sealing With

air

Air Duct Cleaning

NADCA-style deep cleaning of your full HVAC system. Removes dust, allergens, pet dander, debris.

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Dryer Vent Cleaning

Lint clogs cause 2,900+ home fires annually. We clear the full vent line from dryer to roof or wall cap.

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Dryer Vent Installation

Fresh installs, reroutes, and code-compliant upgrades. Rigid metal duct, proper slope, code-rated wall caps.

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UV Light Installation

UV-C light installed near your evaporator coil neutralizes mold, bacteria, and viruses 24/7.
flash_on Same-Day Booking

Book Air Duct Sealing Today

Free written estimate. NADCA-aligned process. Same-day service across Salt Lake City and the Wasatch Front.

call(801) 899-9691 edit_noteGet Free Quote
  • check_circleNo upsells
  • check_circleWritten quotes
  • check_circleLicensed in Utah
  • check_circle100% guarantee
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Call our local crew

(801) 899-9691

Salt Lake City, UT · 60-mile service radius. Open Mon–Fri 7a–7p, Sat 8a–5p.

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