Call Now — (888) 216-9551 — Same-Day Scheduling
Pressure Tested Before & After  ·  Mastic Sealant  ·  Every Leak Point Found  ·  Guaranteed
Duct Sealing · Somersworth, NH

Duct Sealing in Somersworth, NH —
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 Somersworth, NH

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

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

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

Why Correct Sealant Materials Last While Duct Tape Fails in Somersworth, NH

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

Call Now — (888) 216-9551
Where Leaks Occur

Where Duct Leaks Occur and Why They Develop in Somersworth, NH

At Every Unsealed Duct Joint Throughout the System in Somersworth

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

At Branch Takeoffs From the Main Trunk Line in Somersworth, NH

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

At Register Boot Connections in Walls and Ceilings in Somersworth

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

Why Original Installation Sealant Fails Over Time in Somersworth, NH

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

What Leakage Costs You

What Duct Leakage Costs You in Somersworth, NH

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 Somersworth, NH

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

What Return Duct Leaks Do to Your Indoor Air Quality in Somersworth, NH

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

Call Now — (888) 216-9551
Our Sealing Process

MBM's Duct Sealing Process in Somersworth, NH

1

Pressure Testing to Establish Total Leakage in Somersworth

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

2

Systematic Leak Location Through the Accessible System in Somersworth, NH

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

3

Correct Sealant Selected for Each Leak Point in Somersworth

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

4

Every Leak Point Sealed Completely in Somersworth, NH

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

5

Post-Sealing Pressure Test to Confirm the Result in Somersworth

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

Sealant Materials

What MBM Uses to Seal Duct Leaks in Somersworth, NH

Mastic Sealant — The Professional Standard in Somersworth

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

UL 181-Rated Foil Tape for Specific Applications in Somersworth, NH

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

Standard Duct Tape Is Never Used in Somersworth

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

Why MBM

Why Choose MBM Air Duct Cleaning for Duct Sealing in Somersworth, NH

Pressure Tested Before and After — Documented Improvement in Somersworth

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

Every Accessible Leak Point Sealed in Somersworth, NH

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

Correct Materials That Maintain Effectiveness Long Term in Somersworth

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

Every Sealing Service Guaranteed in Somersworth, NH

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

Call Now — (888) 216-9551
Pricing

Duct Sealing Cost in Somersworth, NH

All pricing confirmed upfront before work begins in Somersworth. No surprises in Somersworth, NH.

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

Pressure tested before and after. Every leak found. Correct materials. Guaranteed. MBM Air Duct Cleaning in Somersworth, NH.

Call now for same-day scheduling in Somersworth.

Call Now — (888) 216-9551
Service Area

Serving Somersworth, NH and Surrounding Areas

Downtown Somersworth

Homes, condos, apartments in Somersworth, NH

North Somersworth

Full north-side coverage in Somersworth, NH

South Somersworth

All south-side communities in Somersworth

East Somersworth

East-end homes and properties in Somersworth, NH

West Somersworth

Full west-side coverage in Somersworth

Surrounding Areas

Call to confirm availability in Somersworth, NH

Call Now — (888) 216-9551
FAQ

Duct Sealing FAQs in Somersworth, NH

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

Ducts Losing Conditioned Air? Call MBM Air Duct Cleaning in Somersworth, NH Today.

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

Call Now — (888) 216-9551

Our HVAC & Air Duct Services in Somersworth, NH

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

Serving These Locations

Air Duct Cleaning Winnsboro, TXAir Duct Cleaning Grand Saline, TXAir Duct Cleaning Hoisington, KSAir Duct Cleaning Setauket, NYAir Duct Cleaning Lakeland, NYAir Duct Cleaning Mustang, OKAir Duct Cleaning North Enid, OKAir Duct Cleaning Folsom, NJAir Duct Cleaning Burleson, TXAir Duct Cleaning Grand Ledge, MIAir Duct Cleaning Lake St. Louis, MOAir Duct Cleaning Tega Cay, SCAir Duct Cleaning Pleasant Grove, OHAir Duct Cleaning Riviera Beach, MDAir Duct Cleaning Gold Hill, ORAir Duct Cleaning Frederic, WIAir Duct Cleaning Howe, TXAir Duct Cleaning Rutgers University-Busch Campus, NJAir Duct Cleaning Winsted, MNAir Duct Cleaning Ironton, MOAir Duct Cleaning Philipsburg, PAAir Duct Cleaning Clermont, INAir Duct Cleaning Trainer, PAAir Duct Cleaning Hampton Beach, NHAir Duct Cleaning Old Greenwich, CTAir Duct Cleaning Columbus, NCAir Duct Cleaning Fair Lakes, VAAir Duct Cleaning Steiner Ranch, TXAir Duct Cleaning Benton Heights, MIAir Duct Cleaning Pine Ridge, FLAir Duct Cleaning South Milwaukee, WIAir Duct Cleaning Agua Dulce, TXAir Duct Cleaning Greenbrier, ARAir Duct Cleaning Dyer, TNAir Duct Cleaning Fairfax, OKAir Duct Cleaning Park City, UTAir Duct Cleaning Lexington, TXAir Duct Cleaning Creve Coeur, ILAir Duct Cleaning Atlantis, FLAir Duct Cleaning Tulare, CAAir Duct Cleaning Jackson, SCAir Duct Cleaning Bourbon, INAir Duct Cleaning Gloucester Point, VAAir Duct Cleaning West Buechel, KYAir Duct Cleaning Orwell, OHAir Duct Cleaning Lake In The Hills, ILAir Duct Cleaning Raymond, MSAir Duct Cleaning Wheat Ridge, COAir Duct Cleaning Liberty, UTAir Duct Cleaning La Blanca, TX