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Pressure Tested Before & After  ·  Mastic Sealant  ·  Every Leak Point Found  ·  Guaranteed
Duct Sealing · Coral Gables, FL

Duct Sealing in Coral Gables, FL —
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 Coral Gables, FL

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

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

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

Why Correct Sealant Materials Last While Duct Tape Fails in Coral Gables, FL

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

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Where Leaks Occur

Where Duct Leaks Occur and Why They Develop in Coral Gables, FL

At Every Unsealed Duct Joint Throughout the System in Coral Gables

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

At Branch Takeoffs From the Main Trunk Line in Coral Gables, FL

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

At Register Boot Connections in Walls and Ceilings in Coral Gables

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

Why Original Installation Sealant Fails Over Time in Coral Gables, FL

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

What Leakage Costs You

What Duct Leakage Costs You in Coral Gables, FL

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 Coral Gables, FL

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

What Return Duct Leaks Do to Your Indoor Air Quality in Coral Gables, FL

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

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Our Sealing Process

MBM's Duct Sealing Process in Coral Gables, FL

1

Pressure Testing to Establish Total Leakage in Coral Gables

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

2

Systematic Leak Location Through the Accessible System in Coral Gables, FL

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

3

Correct Sealant Selected for Each Leak Point in Coral Gables

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

4

Every Leak Point Sealed Completely in Coral Gables, FL

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

5

Post-Sealing Pressure Test to Confirm the Result in Coral Gables

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

Sealant Materials

What MBM Uses to Seal Duct Leaks in Coral Gables, FL

Mastic Sealant — The Professional Standard in Coral Gables

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

UL 181-Rated Foil Tape for Specific Applications in Coral Gables, FL

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

Standard Duct Tape Is Never Used in Coral Gables

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

Why MBM

Why Choose MBM Air Duct Cleaning for Duct Sealing in Coral Gables, FL

Pressure Tested Before and After — Documented Improvement in Coral Gables

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

Every Accessible Leak Point Sealed in Coral Gables, FL

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

Correct Materials That Maintain Effectiveness Long Term in Coral Gables

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

Every Sealing Service Guaranteed in Coral Gables, FL

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

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Pricing

Duct Sealing Cost in Coral Gables, FL

All pricing confirmed upfront before work begins in Coral Gables. No surprises in Coral Gables, FL.

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

Pressure tested before and after. Every leak found. Correct materials. Guaranteed. MBM Air Duct Cleaning in Coral Gables, FL.

Call now for same-day scheduling in Coral Gables.

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Service Area

Serving Coral Gables, FL and Surrounding Areas

Downtown Coral Gables

Homes, condos, apartments in Coral Gables, FL

North Coral Gables

Full north-side coverage in Coral Gables, FL

South Coral Gables

All south-side communities in Coral Gables

East Coral Gables

East-end homes and properties in Coral Gables, FL

West Coral Gables

Full west-side coverage in Coral Gables

Surrounding Areas

Call to confirm availability in Coral Gables, FL

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FAQ

Duct Sealing FAQs in Coral Gables, FL

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

Ducts Losing Conditioned Air? Call MBM Air Duct Cleaning in Coral Gables, FL Today.

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

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Our HVAC & Air Duct Services in Coral Gables, FL

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

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