You’re paying to heat and cool your home. But if your ductwork is leaking, a significant chunk of that money is disappearing into your walls, attic, or crawl space before it even reaches a single room. It’s one of the most common and most overlooked sources of energy waste in Illinois homes. The good news is that there’s a solution that seals those leaks from the inside out, and it works better than anything that came before it.
At Modern Air Solutions in Oswego, we know all too well what leaky ducts do to a home’s comfort and efficiency. And we’ve seen what Aeroseal does to fix it.
The Hidden Problem in Your Ductwork
Most homeowners assume that if their HVAC system is running, the air is getting where it needs to go. That’s not always the case. The EPA estimates that the average home loses 20-30% of conditioned air through duct leaks. That’s nearly a third of what you’re paying for, gone.
The symptoms show up in familiar ways: rooms that never seem to reach the right temperature, a system that runs longer than it should, and energy bills that keep climbing no matter what you do. If any of that sounds familiar, your ducts might be the issue.
What Is Aeroseal, Exactly?
We understand that many homeowners have never heard of this technology. What is Aeroseal duct sealing? It’s a patented process developed at Lawrence Berkeley National Laboratory that seals leaks in your ductwork from the inside using aerosolized polymer particles.
Here’s how it works: a technician temporarily blocks your vents, then introduces the Aeroseal solution into your duct system as a fine mist. As the particles travel through the ducts, they accumulate at any point where air is escaping (gaps, cracks, loose connections) and bond together to form a durable seal.
The whole process typically takes a few hours, and the software running the system tracks your leakage rate in real time so you can see the improvement happening as it works. No demolition, no tearing into walls, no mess. Just a measurably tighter duct system when it’s done.
What Does It Cost & What Do You Save?
Aeroseal duct sealing cost varies depending on the size of your home and the condition of your existing ductwork, but most residential jobs run between $1,500 and $3,500. For homeowners in the Oswego area, that number needs context.
Consider that a home losing 25% of its conditioned air is, in effect, paying for four months of heating and cooling it never receives. Aeroseal-treated homes typically see energy savings of 20–30% on heating and cooling costs. For a household spending $2,000 a year on energy, that’s $400–$600 saved annually. The system pays for itself, and then keeps paying you back every month after that.
Beyond the savings, there’s the comfort factor. Rooms that were always too hot or too cold tend to even out dramatically after sealing. Your system doesn’t have to work as hard, which also means less wear and a longer lifespan for your HVAC equipment.
Why Modern Air Solutions?
Not every HVAC company offers Aeroseal, and fewer still have the experience to do it right. At Modern Air Solutions, a family-operated company serving Illinois residents since 2007, we’re proud to bring this technology to homeowners throughout Oswego and the surrounding communities. We walk you through the process and make sure you understand exactly what you’re getting.
If you’re tired of high energy bills and uneven comfort, it’s time to stop guessing and start fixing. Contact Modern Air Solutions today and find out if Aeroseal is the right move for your home. We’re certain it is.
