Aeroseal Duct Sealing

Discuss duct leakage and sealing options for your Sauk Rapids home. Call (763) 515-6411 or request service.

Aeroseal Duct Sealing in Sauk Rapids, MN

Ductwork in most homes leaks. Not catastrophically. Constantly. Seams separate over decades, joints loosen, and small gaps open at connections throughout attics, wall cavities, and crawl spaces. The US Department of Energy estimates that duct leakage accounts for 20 to 30 percent of conditioned air loss in an average home. That is air your system heated or cooled, escaping into unconditioned space before it reaches a room.

Aeroseal is a duct sealing technology that addresses these leaks from the inside. A trained technician pressurizes the duct system and introduces an atomized sealant. The particles travel through the airstream and attach to leak edges, building a seal at every gap, seam, and joint simultaneously.

Rol Air brings Aeroseal service to homeowners in Sauk Rapids, Elk River, Zimmerman, Ramsey, Monticello, Rogers, and throughout Benton County.

What Leaking Ducts Are Costing You

The energy loss is measurable on every utility bill. Rooms that never reach temperature. A furnace that runs longer than it should to compensate for lost airflow. Uneven heating between floors or between the front and back of the house.

Less visible: duct leakage creates negative pressure inside the living space. That pressure draws in air from wherever the building envelope allows it. Attic insulation dust, mold spores from crawl spaces, and combustion gases from attached garages can all enter through gaps created by that pressure imbalance. Sealing the duct system reduces that infiltration pathway along with the energy waste.

For Sauk Rapids homes that rely on heating and cooling across both seasons, a duct assessment can help identify wasted airflow. Actual energy savings depend on the home and system.

How the Aeroseal Process Works

1. The technician blocks all registers and grilles throughout the home with foam plugs.

1. A diagnostic test measures baseline duct leakage in cubic feet per minute, giving you a documented starting point.

1. The Aeroseal machine connects to the duct system at the air handler.

1. Atomized sealant circulates through the ductwork under pressure.

1. Polymer particles attach to leak edges and accumulate until each gap is sealed.

1. A second diagnostic test measures post-treatment leakage, confirming results.

1. The technician provides a printed certificate showing before-and-after leakage figures.

Review the current sealant product information with the installer and follow the preparation and occupancy instructions provided for your home.

What Aeroseal Can and Cannot Address

Aeroseal seals leaks inside ductwork at seams, joints, and gaps at connections throughout the system. It does not seal large physical disconnections where duct sections have fully separated, and it does not address insulation on the duct exterior. Sections that have physically fallen apart require manual repair before Aeroseal application. A pre-assessment identifies whether your system is a suitable candidate.

Before-and-after testing measures your home’s actual change in duct leakage. Results vary with the condition of the system. Ask about the written warranty available for your installation.

Related IAQ services: Indoor Air Quality Hub | Indoor Air Quality Testing | Air Purification & Filtration | Whole-Home Humidifiers | Whole-Home Dehumidifiers

Call (763) 515-6411. 24-hour answering. 3955 Shadowwood Dr NE Ste 4, Sauk Rapids, MN 56379.

Plan seasonal equipment care with our maintenance care options.

Frequently Asked Questions

How do I know if my ducts are leaking?

Common signs include rooms that are consistently harder to heat or cool than others, a furnace or AC that runs longer than expected, unusually high utility bills relative to similar homes, and visible dust near registers even after filter changes. A duct leakage diagnostic test gives you a precise number rather than a symptom-based guess.

Is Aeroseal worth the investment?

The value depends on measured leakage, access, project cost, utility rates, and how your home uses heating and cooling. Before-and-after testing measures the change in duct leakage. Ask for a project-specific estimate rather than assuming a fixed payback period.

Is the Aeroseal sealant safe to breathe?

Ask the installer for the current product safety information and follow the preparation, ventilation, and occupancy instructions for your installation. Tell the installer about any specific sensitivities before the appointment.

How long does an Aeroseal application take?

Most residential applications are complete in four to six hours, including setup, the sealing process, and post-treatment diagnostics. Homes with extensive ductwork or complex layouts may take longer. The pre-assessment gives you a time estimate before the appointment.

Can Aeroseal fix large duct separations?

No. Aeroseal addresses leaks at seams and joints throughout an intact duct system. A section that has fully separated from its connection point requires physical reattachment and sealing by hand before Aeroseal can address the remaining smaller leaks. The pre-treatment diagnostic often reveals these separations, and Rol Air handles the manual repairs as part of the process.

Will Aeroseal work on flex ductwork?

Yes. Aeroseal works on sheet metal, flex duct, and fiberboard duct systems. The sealant adheres to leak edges regardless of the duct material. Flex duct that has collapsed, kinked severely, or torn requires physical repair before treatment.

Does duct sealing qualify for any utility rebates or tax credits?

Some utility programs offer rebates for qualifying duct-sealing projects. Check your utility’s current requirements before scheduling; eligibility, documentation, and funding vary. Do not assume that a project qualifies for a tax credit.

How long does Aeroseal last?

Ask about the written warranty available for your installation, including its coverage and conditions. Laboratory durability testing is not a guarantee of a particular service life in your home. The condition of the ductwork still matters.

Can Aeroseal be done in winter?

Yes. The process does not require a minimum outdoor temperature, and the pressurization test and sealing application work independently of whether heating or cooling is active. Many Sauk Rapids homeowners schedule Aeroseal during fall or early winter when comfort complaints from uneven heating first become noticeable.