Stop Losing Heat. Save Real Money.
New England's trusted Aeroseal contractor — two locations in MA & NH. We seal your duct leaks from the inside out. No demolition. Computer-verified results. Same-day service.
About the Technology
What Is Aeroseal?
Aeroseal is a duct sealing process developed & patented by the US Dept. Of Energy & Environmental Protection Agency to combat wasted energy, poor air distribution & indoor air quality (IAQ) problems caused by air duct leakage.
These problem are typically blind to most homeowners who have come to accept excess dust, uneven cooling or heating of rooms, & IAQ symptoms associated with “sick home syndrome” as normal, not connecting these problems as the result of leaky ducts. Because most duct work is concealed in walls & other hard to get places until Aeroseal there was no cost effective way to seal existing duct work in homes.
Aeroseal works from the inside using a non-toxic aerosol process that seals only the gaps & cracks reducing leakage, in many cases, over 90%. Duct Kings is a licensed dealer of Aeroseal and was the first Aeroseal dealer in New England.
The Process
How Aeroseal Works
The Inspection & Pressure-Test
We will temporarily block all supply and returns and run the pretest. This will tell us how leaky the duct work is in square inches and in CFM (cubic feet per minute).
The Sealing Process
We will then begin sealing the duct work with the computer operated Aeroseal patented aerosol mist. The ducts are put under positive pressure and where air leaks from the duct work the mist seals the leak from the inside (does not coat the duct, just fills the leak).
Post-Test & Live Monitoring
With the supplies and returns still block we will run a post leakage test that will tell us how muck of a reduction in leakage there was and your projected energy savings.
The Aeroseal Report
We will then print the report with the pre-leakage results, the post leakage results and your projected energy savings.
Watch It Work
Duct Leakage & Aeroseal Technology
Aeroseal Process
Aeroseal's Benefits
Why Your Home Needs It
Sealing your ducts transforms comfort, air quality, and long-term HVAC health in a single day.
Stop the Main Source of Dust
Your duct system has 2 sides: supply and return. Leaks in the return side pull air from attics, basements, crawl spaces, and garages — circulating dust, dirt & pollutants through your home. Sealing from the inside stops that infiltration permanently.
Reduce Leaks & Save Money
Money Magazine reported that sealing duct leakage is one of the easiest ways to cut your energy bills. The New York Times ranked it #1 for homeowner ROI — giving the best return in energy savings vs. any other home improvement.
Computer-Verified & Warrantied
Every job prints a before/after certificate showing exact CFM leakage reduction and the equivalent square inch hole sealed. The sealant carries a 10-year manufacturer warranty and is rated for a 40+ year lifespan.
Key Statistic
How Leaky Are My Ducts?
The US Dept. of Energy and the Electric Power Research Institute determined that 25% to 40% of heating and cooling energy put out by heating, ventilating and cooling air in the average home is lost by leaky duct work.
