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.
Your energy bills are higher than they should be for the amount of heating and cooling your home requires in Portola Valley. Certain rooms will not reach the right temperature regardless of how long the HVAC runs in Portola Valley, CA. You have had the equipment checked and it is working correctly in Portola Valley. 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 Portola Valley, CA. 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 Portola Valley.
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 Portola Valley, CA. The Department of Energy estimates that typical residential duct systems lose 20 to 30 percent of conditioned air through leakage in Portola Valley. 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 Portola Valley, CA.
MBM Air Duct Cleaning finds and seals duct leaks throughout Portola Valley, CA in Portola Valley. Pressure testing before sealing to quantify the total leakage in Portola Valley, CA. Systematic identification of every specific leak point through the accessible system in Portola Valley. Correct sealant materials applied to every leak point in Portola Valley, CA. Post-sealing pressure testing to document the improvement with measured numbers in Portola Valley. And a guarantee on every sealing service in Portola Valley, CA. Call now for same-day scheduling in Portola Valley.
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 Portola Valley. A supply duct carrying cold conditioned air through a 130-degree summer attic cycles through extreme temperatures with every cooling cycle in Portola Valley, CA. Standard duct tape adhesive is not formulated for this cycling and fails within a few seasons in Portola Valley. Mastic sealant remains flexible after curing and maintains its seal through years of thermal cycling in Portola Valley, CA. UL 181-rated foil tape maintains adhesion for 20 years or more in normal duct system conditions in Portola Valley.
Every connection between duct sections is a potential leak point in Portola Valley, CA. In most residential installations, these joints were mechanically fastened without sealant during installation in Portola Valley. 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 Portola Valley, CA.
Branch takeoffs split conditioned air from the main trunk line into the individual branch runs serving each room in Portola Valley. They have multiple edges and angles that create significant potential leak area if not correctly sealed in Portola Valley, CA. Branch takeoff leaks are among the largest individual leak points in typical residential duct systems in Portola Valley.
The register boot connects the branch duct run to the wall, ceiling, or floor opening where the supply register mounts in Portola Valley, CA. 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 Portola Valley. Conditioned air escaping at the boot level leaks into the wall or ceiling cavity rather than through the register into the room in Portola Valley, CA.
Systems sealed with standard duct tape develop leakage as the tape dries, cracks, and loses adhesion from temperature cycling in Portola Valley. Standard duct tape on duct joints typically fails within three to five seasons of thermal cycling in Portola Valley, CA. Joints that were sealed with standard tape appear sealed when first applied and are open to leakage again within a few years in Portola Valley.
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 Portola Valley. The conditioned air that leaks out before reaching the register does not reach the room in Portola Valley, CA. Rooms at the end of long duct runs with multiple leak points along the way receive the cumulative effect of all those leaks in Portola Valley. 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 Portola Valley, CA.
Return duct leaks draw air from the surrounding unconditioned space into the return airstream in Portola Valley. A return duct leak in an attic draws hot, dusty attic air into the air handler in summer in Portola Valley, CA. A return duct leak in a crawl space draws crawl space air including moisture, mold spores, and soil particulate into the system in Portola Valley. This unconditioned air bypasses the filter and is distributed throughout the home in Portola Valley, CA.
MBM Air Duct Cleaning performs a duct pressure test before any sealing begins in Portola Valley, CA. A calibrated fan is connected to the duct system and pressurized to a standard test pressure in Portola Valley. The measured airflow represents the total leakage rate and provides the baseline for comparing with the post-sealing result in Portola Valley, CA.
With the system pressurized, MBM technicians work through the accessible duct system to locate every specific leak point in Portola Valley. Every branch takeoff. Every duct joint. Every register boot connection. Every plenum seam and air handler connection in Portola Valley, CA. Every identified leak point is marked for sealing in Portola Valley.
Mastic sealant for most duct joint and connection applications in Portola Valley, CA. UL 181-rated foil tape for specific sheet metal seam applications in Portola Valley. The correct material for the specific application in Portola Valley, CA.
MBM systematically seals every identified leak point in the accessible duct system in Portola Valley. Mastic applied at the correct thickness to cover the full joint gap and bond to the duct surfaces on both sides in Portola Valley, CA. Every identified leak point addressed before the post-sealing pressure test in Portola Valley.
After all identified leak points are sealed, MBM repeats the pressure test to measure the post-sealing leakage rate in Portola Valley, CA. The before and after measurements quantify the leakage reduction achieved by the sealing in Portola Valley. Documented evidence of the result provided to the homeowner in Portola Valley, CA.
Mastic is a water-based sealant specifically formulated for duct system applications in Portola Valley, CA. It remains flexible after curing, maintaining its seal through the thermal cycling that duct systems experience in Portola Valley. It does not dry out, crack, or lose adhesion from temperature cycling the way standard duct tape does in Portola Valley, CA.
UL 181-rated foil tape is tested and rated specifically for HVAC duct applications in Portola Valley. Unlike standard duct tape, it maintains its adhesion through the temperature cycling of duct system operation in Portola Valley, CA. Appropriate for specific sheet metal seam applications in Portola Valley.
Standard silver duct tape is not rated for duct system applications in Portola Valley, CA. Its rubber-based adhesive dries and loses adhesion from temperature cycling in Portola Valley. MBM Air Duct Cleaning never uses standard duct tape for duct sealing work in Portola Valley, CA.
MBM performs pressure testing before and after every duct sealing service in Portola Valley, CA. The before and after measurements document the leakage reduction achieved in Portola Valley. Documented improvement, not assumed improvement in Portola Valley, CA.
MBM seals every identified leak point in the accessible duct system in Portola Valley. Not a representative sample. Not the most obvious points only in Portola Valley, CA. Every identified leak point in Portola Valley.
Mastic sealant and UL 181-rated foil tape that maintain their effectiveness through the thermal cycling of long-term HVAC operation in Portola Valley, CA. Never standard duct tape in Portola Valley.
Every MBM Air Duct Cleaning duct sealing service is guaranteed in Portola Valley. If the sealing does not produce the expected improvement within the guarantee period, we return and address it at no additional charge in Portola Valley, CA.
All pricing confirmed upfront before work begins in Portola Valley. No surprises in Portola Valley, CA.
A sealing service that reduces leakage by 15 to 20 percentage points returns that proportional energy cost reduction on every subsequent energy bill in Portola Valley, CA. For a home spending $200 per month on heating and cooling, a 15 percent leakage reduction saves approximately $30 per month in Portola Valley. A sealing service costing $500 to $1,000 pays for itself in energy savings within 18 to 36 months in most cases in Portola Valley, CA. Every month after payback is net return on the investment in Portola Valley.
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Duct leakage pays for conditioned air that heats and cools your attic and crawl space instead of your living spaces every month in Portola Valley. 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 Portola Valley, CA. Call now for same-day scheduling in Portola Valley.
Call Now — (888) 216-9551