A back bedroom that stays chilly while the thermostat reads 70 degrees often points to something happening out of sight. Somewhere behind a wall, above a ceiling, or tucked into a crawlspace, warmed air is likely escaping before it ever reaches the vent. As Chicago mornings start to carry a fall chill, that kind of loss adds up fast once the furnace starts running daily. Lowe’s Air Duct Cleaning helps homeowners track down exactly where that air is going and seal it back in before the coldest months arrive.

Stop Duct Leaks Before Fall Heating Season Hits

Leaky ductwork is more common than most homeowners realize. In a typical home, a substantial share of heated or cooled air never makes it to the vents, escaping instead through small gaps and cracks along the duct system. Aeroseal duct sealing closes those hard-to-reach openings from inside the ductwork itself, without opening up walls or ceilings to get there.

How the Sealing Process Works

Before any sealing begins, our certified crew connects testing equipment to the duct system and records how much air is currently escaping. Sealant is then applied from inside the ducts, and a second reading follows once the work wraps up. Homeowners can see the before and after numbers side by side.

• Initial reading: We measure existing air loss throughout the duct system.
• Interior application: Sealant travels through the ducts while equipment monitors the process.
• Final results: We review the completed readings together and show what changed.

Small Gaps Add Up to Real Heat Loss

Even a narrow gap can let warmed air slip into an attic, crawlspace, or wall cavity instead of reaching the rooms it was meant for. The sealant material gathers along leak edges as it moves through the system, closing gaps without guesswork. Most appointments wrap up in just a few hours, and the difference often shows up quickly once the furnace kicks on for the season.

• Comfort: More heated air reaches the rooms your family actually uses.
• Efficiency: Your furnace may not need to run as long to keep up with demand.

Pairing Sealed Ducts With Clean Ducts

On the return side of a duct system, leaks can pull dusty air in before it ever reaches the filter. For that reason, sealing pairs well with air duct cleaning, which removes buildup from inside the ductwork rather than simply redistributing it. We also walk homeowners through the benefits of cleaning air ducts when pets, a recent remodel, or years of accumulated dust are part of the picture.

1. Seal first: We close the openings pulling unconditioned air into the system.
2. Clean thoroughly: Settled debris is then removed from inside the ductwork.

By the time October arrives, furnaces across Chicago, IL, are typically running every day. Lowe’s Air Duct Cleaning can locate and seal the leaks quietly draining comfort from your home, backed by clear before-and-after test results and a fixed price with no surprises. Contact us or schedule service at (800) 699-0955 to get ahead of the season.