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Pressure Tested Before & After  ·  Mastic Sealant  ·  Every Leak Point Found  ·  Guaranteed
Duct Sealing · Lake Dunlap, TX

Duct Sealing in Lake Dunlap, TX —
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 Lake Dunlap, TX

Your energy bills are higher than they should be for the amount of heating and cooling your home requires in Lake Dunlap. Certain rooms will not reach the right temperature regardless of how long the HVAC runs in Lake Dunlap, TX. You have had the equipment checked and it is working correctly in Lake Dunlap. 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 Lake Dunlap, TX. 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 Lake Dunlap.

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 Lake Dunlap, TX. The Department of Energy estimates that typical residential duct systems lose 20 to 30 percent of conditioned air through leakage in Lake Dunlap. 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 Lake Dunlap, TX.

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

Why Correct Sealant Materials Last While Duct Tape Fails in Lake Dunlap, TX

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 Lake Dunlap. A supply duct carrying cold conditioned air through a 130-degree summer attic cycles through extreme temperatures with every cooling cycle in Lake Dunlap, TX. Standard duct tape adhesive is not formulated for this cycling and fails within a few seasons in Lake Dunlap. Mastic sealant remains flexible after curing and maintains its seal through years of thermal cycling in Lake Dunlap, TX. UL 181-rated foil tape maintains adhesion for 20 years or more in normal duct system conditions in Lake Dunlap.

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Where Leaks Occur

Where Duct Leaks Occur and Why They Develop in Lake Dunlap, TX

At Every Unsealed Duct Joint Throughout the System in Lake Dunlap

Every connection between duct sections is a potential leak point in Lake Dunlap, TX. In most residential installations, these joints were mechanically fastened without sealant during installation in Lake Dunlap. 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 Lake Dunlap, TX.

At Branch Takeoffs From the Main Trunk Line in Lake Dunlap, TX

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

At Register Boot Connections in Walls and Ceilings in Lake Dunlap

The register boot connects the branch duct run to the wall, ceiling, or floor opening where the supply register mounts in Lake Dunlap, TX. 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 Lake Dunlap. Conditioned air escaping at the boot level leaks into the wall or ceiling cavity rather than through the register into the room in Lake Dunlap, TX.

Why Original Installation Sealant Fails Over Time in Lake Dunlap, TX

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

What Leakage Costs You

What Duct Leakage Costs You in Lake Dunlap, TX

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 Lake Dunlap, TX

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 Lake Dunlap. The conditioned air that leaks out before reaching the register does not reach the room in Lake Dunlap, TX. Rooms at the end of long duct runs with multiple leak points along the way receive the cumulative effect of all those leaks in Lake Dunlap. 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 Lake Dunlap, TX.

What Return Duct Leaks Do to Your Indoor Air Quality in Lake Dunlap, TX

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

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Our Sealing Process

MBM's Duct Sealing Process in Lake Dunlap, TX

1

Pressure Testing to Establish Total Leakage in Lake Dunlap

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

2

Systematic Leak Location Through the Accessible System in Lake Dunlap, TX

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

3

Correct Sealant Selected for Each Leak Point in Lake Dunlap

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

4

Every Leak Point Sealed Completely in Lake Dunlap, TX

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

5

Post-Sealing Pressure Test to Confirm the Result in Lake Dunlap

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

Sealant Materials

What MBM Uses to Seal Duct Leaks in Lake Dunlap, TX

Mastic Sealant — The Professional Standard in Lake Dunlap

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

UL 181-Rated Foil Tape for Specific Applications in Lake Dunlap, TX

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

Standard Duct Tape Is Never Used in Lake Dunlap

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

Why MBM

Why Choose MBM Air Duct Cleaning for Duct Sealing in Lake Dunlap, TX

Pressure Tested Before and After — Documented Improvement in Lake Dunlap

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

Every Accessible Leak Point Sealed in Lake Dunlap, TX

MBM seals every identified leak point in the accessible duct system in Lake Dunlap. Not a representative sample. Not the most obvious points only in Lake Dunlap, TX. Every identified leak point in Lake Dunlap.

Correct Materials That Maintain Effectiveness Long Term in Lake Dunlap

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

Every Sealing Service Guaranteed in Lake Dunlap, TX

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

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Pricing

Duct Sealing Cost in Lake Dunlap, TX

All pricing confirmed upfront before work begins in Lake Dunlap. No surprises in Lake Dunlap, TX.

Small system — up to 10 vents in Lake Dunlap$300 to $600
Standard residential system — 10 to 20 vents in Lake Dunlap, TX$500 to $1,000
Large residential system — 20 or more vents in Lake Dunlap$800 to $1,500+
Aeroseal treatment for inaccessible leaks in Lake Dunlap, TX$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 Lake Dunlap, TX. For a home spending $200 per month on heating and cooling, a 15 percent leakage reduction saves approximately $30 per month in Lake Dunlap. A sealing service costing $500 to $1,000 pays for itself in energy savings within 18 to 36 months in most cases in Lake Dunlap, TX. Every month after payback is net return on the investment in Lake Dunlap.

Pressure tested before and after. Every leak found. Correct materials. Guaranteed. MBM Air Duct Cleaning in Lake Dunlap, TX.

Call now for same-day scheduling in Lake Dunlap.

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Service Area

Serving Lake Dunlap, TX and Surrounding Areas

Downtown Lake Dunlap

Homes, condos, apartments in Lake Dunlap, TX

North Lake Dunlap

Full north-side coverage in Lake Dunlap, TX

South Lake Dunlap

All south-side communities in Lake Dunlap

East Lake Dunlap

East-end homes and properties in Lake Dunlap, TX

West Lake Dunlap

Full west-side coverage in Lake Dunlap

Surrounding Areas

Call to confirm availability in Lake Dunlap, TX

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FAQ

Duct Sealing FAQs in Lake Dunlap, TX

The clearest indicators in Lake Dunlap 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 Lake Dunlap, TX. Pressure testing is the definitive way to quantify the leakage in your specific system in Lake Dunlap.
A duct pressure test connects a calibrated fan to the duct system and pressurizes it to a standard test pressure in Lake Dunlap. The airflow required to maintain that pressure is measured in Lake Dunlap, TX. The measured airflow represents the total leakage rate of the system in Lake Dunlap. MBM Air Duct Cleaning performs pressure testing before and after every duct sealing service in Lake Dunlap, TX.
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 Lake Dunlap. In systems with particularly poor sealing or failed original sealant, the loss can exceed 30 percent in Lake Dunlap, TX.
Duct cleaning before duct sealing allows the mastic sealant to bond to clean duct surfaces in Lake Dunlap. Applying mastic to duct surfaces coated with accumulated dust and debris reduces the bond quality and long-term sealing effectiveness in Lake Dunlap, TX. MBM Air Duct Cleaning recommends cleaning before sealing when both services are needed and can coordinate both in a single visit in Lake Dunlap.
Mastic is a water-based sealant specifically formulated for duct system applications in Lake Dunlap. It remains flexible after curing and maintains its seal through the thermal cycling that duct systems experience during operation in Lake Dunlap, TX. Standard duct tape uses a rubber-based adhesive that dries and loses adhesion from temperature cycling, failing within a few seasons in Lake Dunlap.
Yes. Return duct leaks in crawl spaces draw crawl space air including its elevated moisture content into the return airstream in Lake Dunlap. The additional moisture enters the air handler and is distributed throughout the home in Lake Dunlap, TX. Indoor relative humidity rises despite the air conditioner running because the additional crawl space moisture load overwhelms the system's dehumidification capacity in Lake Dunlap.
Aeroseal is a technology that seals duct leaks from inside the pressurized duct system in Lake Dunlap. Aerosolized sealant particles are introduced into the system and travel to leak points where they accumulate and seal the gap in Lake Dunlap, TX. 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 Lake Dunlap.
Mastic duct sealant maintains its sealing effectiveness for the life of the duct system when correctly applied in Lake Dunlap. UL 181-rated foil tape maintains adhesion for 20 years or more in normal duct system conditions in Lake Dunlap, TX. Both materials significantly outlast standard duct tape in duct system applications in Lake Dunlap.
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 Lake Dunlap. The reduction in leakage translates directly to reduced energy consumption for the same heating and cooling output in Lake Dunlap, TX.
Yes for systems with return duct leaks in unconditioned spaces in Lake Dunlap. Return duct leaks in attics and crawl spaces draw unconditioned air including dust, moisture, and mold spores into the return airstream in Lake Dunlap, TX. Sealing these leaks eliminates the pathway and keeps the circulated air to what is drawn from the living spaces in Lake Dunlap.
Duct sealing costs in Lake Dunlap 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 Lake Dunlap, TX. All pricing confirmed upfront before work begins in Lake Dunlap.
Yes. Every MBM Air Duct Cleaning duct sealing service is guaranteed in Lake Dunlap. If the sealing does not produce the expected improvement within the guarantee period, we return and address it at no additional charge in Lake Dunlap, TX.
Call Today

Ducts Losing Conditioned Air? Call MBM Air Duct Cleaning in Lake Dunlap, TX Today.

Duct leakage pays for conditioned air that heats and cools your attic and crawl space instead of your living spaces every month in Lake Dunlap. 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 Lake Dunlap, TX. Call now for same-day scheduling in Lake Dunlap.

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Our HVAC & Air Duct Services in Lake Dunlap, TX

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

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