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Pressure Tested Before & After  ·  Mastic Sealant  ·  Every Leak Point Found  ·  Guaranteed
Duct Sealing · Gig Harbor, WA

Duct Sealing in Gig Harbor, WA —
Call Now for Same-Day Scheduling.

Pressure testing before sealing quantifies total leakage. Every leak point located and sealed with correct materials. Post-sealing pressure test documents the improvement. Every service guaranteed.

Pressure Tested Before & After
Mastic Sealant
Every Leak Point Found
Guaranteed
Professional Duct Sealing

Professional Duct Sealing in Gig Harbor, WA

Your energy bills are higher than they should be for the amount of heating and cooling your home requires in Gig Harbor. Certain rooms will not reach the right temperature regardless of how long the HVAC runs in Gig Harbor, WA. You have had the equipment checked and it is working correctly in Gig Harbor. If the equipment is fine but the home is not comfortable and the bills are high, the problem is almost certainly in the distribution system in Gig Harbor, WA. Specifically, in duct leaks that are allowing conditioned air to escape into unconditioned attic or crawl space before it reaches the rooms you are paying to heat and cool in Gig Harbor.

Duct leakage happens at every unsealed joint between duct sections, at every branch takeoff from the trunk line, at every register boot connection in the walls and ceilings, and at the connections where the duct system meets the air handler in Gig Harbor, WA. The Department of Energy estimates that typical residential duct systems lose 20 to 30 percent of conditioned air through leakage in Gig Harbor. For a home spending $200 per month on heating and cooling, that is $40 to $60 per month escaping through duct leaks to the attic or crawl space in Gig Harbor, WA.

MBM Air Duct Cleaning finds and seals duct leaks throughout Gig Harbor, WA in Gig Harbor. Pressure testing before sealing to quantify the total leakage in Gig Harbor, WA. Systematic identification of every specific leak point through the accessible system in Gig Harbor. Correct sealant materials applied to every leak point in Gig Harbor, WA. Post-sealing pressure testing to document the improvement with measured numbers in Gig Harbor. And a guarantee on every sealing service in Gig Harbor, WA. Call now for same-day scheduling in Gig Harbor.

Why Correct Sealant Materials Last While Duct Tape Fails in Gig Harbor, WA

Standard duct tape uses a rubber-based adhesive that performs at room temperature but dries and loses adhesion when repeatedly exposed to the temperature extremes that duct systems experience during HVAC operation in Gig Harbor. A supply duct carrying cold conditioned air through a 130-degree summer attic cycles through extreme temperatures with every cooling cycle in Gig Harbor, WA. Standard duct tape adhesive is not formulated for this cycling and fails within a few seasons in Gig Harbor. Mastic sealant remains flexible after curing and maintains its seal through years of thermal cycling in Gig Harbor, WA. UL 181-rated foil tape maintains adhesion for 20 years or more in normal duct system conditions in Gig Harbor.

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Where Leaks Occur

Where Duct Leaks Occur and Why They Develop in Gig Harbor, WA

At Every Unsealed Duct Joint Throughout the System in Gig Harbor

Every connection between duct sections is a potential leak point in Gig Harbor, WA. In most residential installations, these joints were mechanically fastened without sealant during installation in Gig Harbor. Over years of thermal cycling that expands and contracts the ductwork with every HVAC cycle, even joints that were initially sealed with standard duct tape have failed as the tape dried and lost adhesion in Gig Harbor, WA.

At Branch Takeoffs From the Main Trunk Line in Gig Harbor, WA

Branch takeoffs split conditioned air from the main trunk line into the individual branch runs serving each room in Gig Harbor. They have multiple edges and angles that create significant potential leak area if not correctly sealed in Gig Harbor, WA. Branch takeoff leaks are among the largest individual leak points in typical residential duct systems in Gig Harbor.

At Register Boot Connections in Walls and Ceilings in Gig Harbor

The register boot connects the branch duct run to the wall, ceiling, or floor opening where the supply register mounts in Gig Harbor, WA. The connection between the flexible duct and the boot collar and the connection between the boot and the surrounding framing are both common significant leak points in Gig Harbor. Conditioned air escaping at the boot level leaks into the wall or ceiling cavity rather than through the register into the room in Gig Harbor, WA.

Why Original Installation Sealant Fails Over Time in Gig Harbor, WA

Systems sealed with standard duct tape develop leakage as the tape dries, cracks, and loses adhesion from temperature cycling in Gig Harbor. Standard duct tape on duct joints typically fails within three to five seasons of thermal cycling in Gig Harbor, WA. Joints that were sealed with standard tape appear sealed when first applied and are open to leakage again within a few years in Gig Harbor.

What Leakage Costs You

What Duct Leakage Costs You in Gig Harbor, WA

20–30%
DOE: Conditioned Air Lost
$40–$60
Per Month Wasted at $200/mo
$600+
Annual Waste at $200/mo Budget

How Leaking Ducts Create Comfort Problems Room by Room in Gig Harbor, WA

Supply duct leakage between the trunk line and the registers means rooms furthest from the air handler receive less conditioned air than they were designed to receive in Gig Harbor. The conditioned air that leaks out before reaching the register does not reach the room in Gig Harbor, WA. Rooms at the end of long duct runs with multiple leak points along the way receive the cumulative effect of all those leaks in Gig Harbor. The room that is always too hot in summer and too cold in winter is often at the end of a duct run with multiple unsealed joints in Gig Harbor, WA.

What Return Duct Leaks Do to Your Indoor Air Quality in Gig Harbor, WA

Return duct leaks draw air from the surrounding unconditioned space into the return airstream in Gig Harbor. A return duct leak in an attic draws hot, dusty attic air into the air handler in summer in Gig Harbor, WA. A return duct leak in a crawl space draws crawl space air including moisture, mold spores, and soil particulate into the system in Gig Harbor. This unconditioned air bypasses the filter and is distributed throughout the home in Gig Harbor, WA.

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Our Sealing Process

MBM's Duct Sealing Process in Gig Harbor, WA

1

Pressure Testing to Establish Total Leakage in Gig Harbor

MBM Air Duct Cleaning performs a duct pressure test before any sealing begins in Gig Harbor, WA. A calibrated fan is connected to the duct system and pressurized to a standard test pressure in Gig Harbor. The measured airflow represents the total leakage rate and provides the baseline for comparing with the post-sealing result in Gig Harbor, WA.

2

Systematic Leak Location Through the Accessible System in Gig Harbor, WA

With the system pressurized, MBM technicians work through the accessible duct system to locate every specific leak point in Gig Harbor. Every branch takeoff. Every duct joint. Every register boot connection. Every plenum seam and air handler connection in Gig Harbor, WA. Every identified leak point is marked for sealing in Gig Harbor.

3

Correct Sealant Selected for Each Leak Point in Gig Harbor

Mastic sealant for most duct joint and connection applications in Gig Harbor, WA. UL 181-rated foil tape for specific sheet metal seam applications in Gig Harbor. The correct material for the specific application in Gig Harbor, WA.

4

Every Leak Point Sealed Completely in Gig Harbor, WA

MBM systematically seals every identified leak point in the accessible duct system in Gig Harbor. Mastic applied at the correct thickness to cover the full joint gap and bond to the duct surfaces on both sides in Gig Harbor, WA. Every identified leak point addressed before the post-sealing pressure test in Gig Harbor.

5

Post-Sealing Pressure Test to Confirm the Result in Gig Harbor

After all identified leak points are sealed, MBM repeats the pressure test to measure the post-sealing leakage rate in Gig Harbor, WA. The before and after measurements quantify the leakage reduction achieved by the sealing in Gig Harbor. Documented evidence of the result provided to the homeowner in Gig Harbor, WA.

Sealant Materials

What MBM Uses to Seal Duct Leaks in Gig Harbor, WA

Mastic Sealant — The Professional Standard in Gig Harbor

Mastic is a water-based sealant specifically formulated for duct system applications in Gig Harbor, WA. It remains flexible after curing, maintaining its seal through the thermal cycling that duct systems experience in Gig Harbor. It does not dry out, crack, or lose adhesion from temperature cycling the way standard duct tape does in Gig Harbor, WA.

UL 181-Rated Foil Tape for Specific Applications in Gig Harbor, WA

UL 181-rated foil tape is tested and rated specifically for HVAC duct applications in Gig Harbor. Unlike standard duct tape, it maintains its adhesion through the temperature cycling of duct system operation in Gig Harbor, WA. Appropriate for specific sheet metal seam applications in Gig Harbor.

Standard Duct Tape Is Never Used in Gig Harbor

Standard silver duct tape is not rated for duct system applications in Gig Harbor, WA. Its rubber-based adhesive dries and loses adhesion from temperature cycling in Gig Harbor. MBM Air Duct Cleaning never uses standard duct tape for duct sealing work in Gig Harbor, WA.

Why MBM

Why Choose MBM Air Duct Cleaning for Duct Sealing in Gig Harbor, WA

Pressure Tested Before and After — Documented Improvement in Gig Harbor

MBM performs pressure testing before and after every duct sealing service in Gig Harbor, WA. The before and after measurements document the leakage reduction achieved in Gig Harbor. Documented improvement, not assumed improvement in Gig Harbor, WA.

Every Accessible Leak Point Sealed in Gig Harbor, WA

MBM seals every identified leak point in the accessible duct system in Gig Harbor. Not a representative sample. Not the most obvious points only in Gig Harbor, WA. Every identified leak point in Gig Harbor.

Correct Materials That Maintain Effectiveness Long Term in Gig Harbor

Mastic sealant and UL 181-rated foil tape that maintain their effectiveness through the thermal cycling of long-term HVAC operation in Gig Harbor, WA. Never standard duct tape in Gig Harbor.

Every Sealing Service Guaranteed in Gig Harbor, WA

Every MBM Air Duct Cleaning duct sealing service is guaranteed in Gig Harbor. If the sealing does not produce the expected improvement within the guarantee period, we return and address it at no additional charge in Gig Harbor, WA.

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Pricing

Duct Sealing Cost in Gig Harbor, WA

All pricing confirmed upfront before work begins in Gig Harbor. No surprises in Gig Harbor, WA.

Small system — up to 10 vents in Gig Harbor$300 to $600
Standard residential system — 10 to 20 vents in Gig Harbor, WA$500 to $1,000
Large residential system — 20 or more vents in Gig Harbor$800 to $1,500+
Aeroseal treatment for inaccessible leaks in Gig Harbor, WA$1,500 to $3,000+

A sealing service that reduces leakage by 15 to 20 percentage points returns that proportional energy cost reduction on every subsequent energy bill in Gig Harbor, WA. For a home spending $200 per month on heating and cooling, a 15 percent leakage reduction saves approximately $30 per month in Gig Harbor. A sealing service costing $500 to $1,000 pays for itself in energy savings within 18 to 36 months in most cases in Gig Harbor, WA. Every month after payback is net return on the investment in Gig Harbor.

Pressure tested before and after. Every leak found. Correct materials. Guaranteed. MBM Air Duct Cleaning in Gig Harbor, WA.

Call now for same-day scheduling in Gig Harbor.

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Service Area

Serving Gig Harbor, WA and Surrounding Areas

Downtown Gig Harbor

Homes, condos, apartments in Gig Harbor, WA

North Gig Harbor

Full north-side coverage in Gig Harbor, WA

South Gig Harbor

All south-side communities in Gig Harbor

East Gig Harbor

East-end homes and properties in Gig Harbor, WA

West Gig Harbor

Full west-side coverage in Gig Harbor

Surrounding Areas

Call to confirm availability in Gig Harbor, WA

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FAQ

Duct Sealing FAQs in Gig Harbor, WA

The clearest indicators in Gig Harbor are energy bills that seem high relative to your usage, rooms that consistently will not reach the right temperature, an HVAC system that runs continuously without achieving comfort setpoint, higher than expected dust levels throughout the home, and humidity problems during cooling season in Gig Harbor, WA. Pressure testing is the definitive way to quantify the leakage in your specific system in Gig Harbor.
A duct pressure test connects a calibrated fan to the duct system and pressurizes it to a standard test pressure in Gig Harbor. The airflow required to maintain that pressure is measured in Gig Harbor, WA. The measured airflow represents the total leakage rate of the system in Gig Harbor. MBM Air Duct Cleaning performs pressure testing before and after every duct sealing service in Gig Harbor, WA.
The Department of Energy estimates that typical residential duct systems lose 20 to 30 percent of conditioned air through leakage before it reaches the living spaces in Gig Harbor. In systems with particularly poor sealing or failed original sealant, the loss can exceed 30 percent in Gig Harbor, WA.
Duct cleaning before duct sealing allows the mastic sealant to bond to clean duct surfaces in Gig Harbor. Applying mastic to duct surfaces coated with accumulated dust and debris reduces the bond quality and long-term sealing effectiveness in Gig Harbor, WA. MBM Air Duct Cleaning recommends cleaning before sealing when both services are needed and can coordinate both in a single visit in Gig Harbor.
Mastic is a water-based sealant specifically formulated for duct system applications in Gig Harbor. It remains flexible after curing and maintains its seal through the thermal cycling that duct systems experience during operation in Gig Harbor, WA. Standard duct tape uses a rubber-based adhesive that dries and loses adhesion from temperature cycling, failing within a few seasons in Gig Harbor.
Yes. Return duct leaks in crawl spaces draw crawl space air including its elevated moisture content into the return airstream in Gig Harbor. The additional moisture enters the air handler and is distributed throughout the home in Gig Harbor, WA. Indoor relative humidity rises despite the air conditioner running because the additional crawl space moisture load overwhelms the system's dehumidification capacity in Gig Harbor.
Aeroseal is a technology that seals duct leaks from inside the pressurized duct system in Gig Harbor. Aerosolized sealant particles are introduced into the system and travel to leak points where they accumulate and seal the gap in Gig Harbor, WA. It is needed when significant leakage exists in duct sections in wall cavities or ceiling plenums that cannot be physically accessed for manual sealant application in Gig Harbor.
Mastic duct sealant maintains its sealing effectiveness for the life of the duct system when correctly applied in Gig Harbor. UL 181-rated foil tape maintains adhesion for 20 years or more in normal duct system conditions in Gig Harbor, WA. Both materials significantly outlast standard duct tape in duct system applications in Gig Harbor.
Yes. Sealing the duct system reduces the conditioned air loss the system was experiencing and delivers more of the conditioned air the HVAC produces to the living spaces in Gig Harbor. The reduction in leakage translates directly to reduced energy consumption for the same heating and cooling output in Gig Harbor, WA.
Yes for systems with return duct leaks in unconditioned spaces in Gig Harbor. Return duct leaks in attics and crawl spaces draw unconditioned air including dust, moisture, and mold spores into the return airstream in Gig Harbor, WA. Sealing these leaks eliminates the pathway and keeps the circulated air to what is drawn from the living spaces in Gig Harbor.
Duct sealing costs in Gig Harbor range from $300 to $600 for smaller systems, $500 to $1,000 for standard residential systems, $800 to $1,500 and above for larger systems, and $1,500 to $3,000 and above for systems requiring Aeroseal treatment in Gig Harbor, WA. All pricing confirmed upfront before work begins in Gig Harbor.
Yes. Every MBM Air Duct Cleaning duct sealing service is guaranteed in Gig Harbor. If the sealing does not produce the expected improvement within the guarantee period, we return and address it at no additional charge in Gig Harbor, WA.
Call Today

Ducts Losing Conditioned Air? Call MBM Air Duct Cleaning in Gig Harbor, WA Today.

Duct leakage pays for conditioned air that heats and cools your attic and crawl space instead of your living spaces every month in Gig Harbor. MBM Air Duct Cleaning quantifies the leakage with pressure testing, locates every specific leak point, seals every accessible leak with correct materials, confirms the improvement with post-sealing testing, and guarantees every service in Gig Harbor, WA. Call now for same-day scheduling in Gig Harbor.

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Our HVAC & Air Duct Services in Gig Harbor, WA

Duct SealingHVAC RepairAir Conditioning RepairDryer Vent CleaningFurnace RepairHeat Pump RepairEmergency HVAC RepairCommercial HVAC RepairHVAC InstallationHVAC Replacement

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