Air Sealing
Insulation alone isn't enough. Professional air sealing closes the hidden gaps and cracks that let conditioned air escape — the critical first step to a truly efficient home.
What is Professional Air Sealing
Air sealing is the process of identifying and closing gaps, cracks, and openings throughout your home's building envelope. Even well-insulated homes can lose 15-50% of their conditioned air through undetected leaks around plumbing penetrations, electrical boxes, ductwork, and framing gaps.
We use calibrated blower door testing and thermal imaging to find every leak, then seal them with professional-grade materials. The result is a tighter, more comfortable home that puts less strain on your heating and cooling systems.
Diagnostic-driven approach
Blower door testing and thermal imaging pinpoint every leak — we seal based on data, not guesswork
Maximizes insulation performance
Air sealing is the critical complement that lets your existing insulation work as designed
Measurable results
Before-and-after blower door testing proves exactly how much tighter your home is after our work
Why Minnesota Homes Need Professional Air Sealing
Minnesota homes face extreme temperature swings — from -20°F to 95°F within the same year. This creates the stack effect: cold air infiltrates through the basement and crawl space while warm air escapes out through the attic. The result is a constant, invisible exchange of conditioned and unconditioned air that drives up energy costs.
Many homes built before 2000 were never properly air sealed during construction. Even newer homes have hundreds of potential leak points where different building materials meet. Without professional testing, these leaks are invisible but collectively equivalent to leaving a window open year-round.
Drafts near windows, doors, and electrical outlets
Rooms that never reach a comfortable temperature
Dust accumulation around baseboards and ceiling fixtures
High energy bills despite having adequate insulation
Musty smells or humidity problems in certain areas
Furnace or AC running constantly without satisfying the thermostat
Benefits of Professional Air Sealing
Maximizes Insulation Performance
Insulation works best when air isn't flowing through and around it. Sealing leaks lets your existing insulation perform the way it was designed to — without needing replacement.
Lower Heating and Cooling Bills
Reducing air leakage by 15-50% translates directly to lower energy costs. Most homeowners see 15-50% savings on heating and cooling, with the investment paying for itself within 2-4 years.
Improved Indoor Comfort
Eliminating drafts and cold spots creates consistent temperatures in every room. No more throwing on a sweater in certain parts of the house or cranking the thermostat.
Better Indoor Air Quality
Sealing gaps prevents dust, pollen, vehicle exhaust, and outdoor pollutants from entering your home through hidden openings in the building envelope.
Moisture and Ice Dam Prevention
Controlled airflow reduces condensation in wall cavities and attic spaces, preventing mold growth and the heat loss that causes ice dams on your roof.
Quieter Living Spaces
Sealed gaps along exterior walls and ceiling planes significantly reduce outdoor noise infiltration — traffic, wind, rain, and neighborhood sounds.
Our Air Sealing Process
Blower Door Testing and Diagnostics
We install a calibrated blower door fan in your exterior doorway to depressurize the home. Using thermal imaging cameras and smoke pencils, we map every air leak location and measure your home's total air leakage rate.
Targeted Air Sealing
We seal all identified penetrations with professional-grade caulk, spray foam, and weatherstripping. Focus areas include attic bypasses, rim joists, electrical and plumbing penetrations, ductwork connections, and recessed light housings.
Verification Testing and Results
A post-sealing blower door test measures the exact improvement. We document before-and-after air leakage rates and provide you with a detailed report showing the work completed and the measurable results achieved.
Air Sealing Rebates and Incentives
Air sealing qualifies for significant utility rebates in Minnesota, often combined with insulation rebates for maximum savings. We handle all paperwork and help you capture every available incentive.
40% of cost up to $1,200 each for attic and wall insulation, plus $600 for air sealing. Participating contractor required.
$1,500 wall insulation, $1,300 attic + air sealing combo, $200 rim joist add-on. Gas-heat customers; Rebate Eligible Installer required.
50% of cost up to $750 sidewall, $650 attic + air sealing, $425 foundation/rim joist combo. Authorized Insulation Contractor required.
40% of cost up to $1,000 attic, $1,000 wall, $800 air sealing — $2,800 annual cap per home. Electric primary heat required.
For qualified customers through our lending partners
For full details on available incentives, visit our rebates and incentives page. Not sure which utility serves your area? We'll help you figure it out during your free home assessment.