How Aeroseal Duct Sealing Works

If one room in your home always feels warmer or colder than the others, or your heating and cooling system seems to run longer than it should, leaky ductwork could be part of the problem.

Air that escapes before it reaches your vents makes it harder to keep your home comfortable and can lead to higher energy bills.

Many homes throughout Pierce County have hidden duct leaks that go unnoticed for years. Aeroseal duct sealing is designed to seal those leaks from the inside without opening walls or ceilings.

In this guide, Black Hills explains how the process works, why duct leaks matter, and what you can expect during the service.

What Is Aeroseal Duct Sealing?

Understanding Aeroseal Technology

Many homeowners ask, what is Aeroseal duct sealing? It's a process that seals small leaks inside your ductwork using a fine sealant that travels through the system. Instead of sealing ducts from the outside with tape or mastic, the sealant finds the places where air is escaping and seals them from within.

This approach reaches leaks that would otherwise be difficult to access without removing drywall or opening ceilings.

Why Duct Leaks Matter

When air leaks out before reaching your vents, some rooms receive less heated or cooled air than others. Your heating and cooling system keeps running as it tries to make up for that lost air, which can make it harder to keep your home comfortable and raise your energy bills

Signs Your Home May Have Leaky Ductwork

Uneven Temperatures

If one bedroom is always warmer or colder than the rest of the house, leaking ductwork could be keeping conditioned air from reaching that room.

High Energy Bills

A sudden increase in heating or cooling costs without a change in your daily routine can point to air escaping through hidden duct leaks.

Excessive Dust

If you're dusting furniture more frequently than you used to, your duct system could be pulling dust into the airflow through small openings.

Poor Airflow

Some vents may feel much weaker than others even though your system is running normally. Air leaks can reduce the amount of conditioned air reaching those rooms.

Indoor Air Quality Concerns

Leaky ducts can pull dust, insulation particles, and other contaminants into the duct system before that air circulates throughout your home.

How the Aeroseal Process Works

Step 1: Comprehensive Duct Evaluation

The process begins with an inspection of your duct system. Specialized equipment measures how much air is escaping and identifies areas where leaks are affecting system performance.

Step 2: Preparing the Duct System

Supply and return registers are temporarily sealed so the ductwork can be tested. The Aeroseal equipment is then connected to the system.

Step 3: Pressurizing the Duct System

The equipment creates controlled airflow inside the ducts. This allows the sealant to travel only to places where air is escaping.

Step 4: Injecting the Aeroseal Sealant

A fine mist of sealant moves through the duct system until it reaches small leaks. The particles collect around the edges of each opening and continue building until the leak is sealed from the inside.

Many homeowners also ask, does Aeroseal duct sealing work? Testing performed throughout the process shows how much leakage is reduced as the sealant closes the gaps.

Step 5: Verification and Testing

Once the sealing process is complete, the duct system is tested again. The results show how much leakage has been reduced and confirm that the sealing process was successful.

If you're noticing uneven temperatures, weak airflow, or rising energy bills, Black Hills can inspect your ductwork and determine if Aeroseal duct sealing is the right solution for your home. If your ducts also contain heavy dust or debris, we will recommend air duct cleaning before sealing the system.

Contact Black Hills today to schedule an evaluation.