Aeroseal Duct Sealing - Bellingham, WA

Did you know that up to 40% of the air your HVAC system heats or cools could be leaking out of your ductwork? For most homeowners—about 95%—leaky ducts are the sneaky reason behind rising energy bills, uneven temperatures, and even dusty, unhealthy air in your home.

But here’s the good news: fixing those leaks is easier than you think! Imagine lower energy bills, consistent comfort in every room, and fresher, cleaner air—all from one simple solution.

That’s exactly what Aeroseal duct sealing in Bellingham, WA, does for homeowners. At Marr's Heating and Air Conditioning, we specialize in sealing your ducts from the inside out, fixing the problem at its source. Our process delivers results you’ll feel right away—making your home healthier, more comfortable, and much more energy-efficient.

What Makes Aeroseal Duct Sealing So Effective?

Leaky ducts don’t just let your conditioned air escape—they also invite dust, allergens, and moisture into your system from attics, crawlspaces, and walls. This not only makes it harder for your HVAC system to keep up but can also leave your home feeling less comfortable and your air less clean.
The impact of duct leaks goes beyond comfort. When your ducts are leaking, your HVAC system may work up to 50% harder to maintain your desired temperature, driving up your energy bills. On top of that, Americans spend nearly 90% of their time indoors, where pollutant levels can be 2-5 times higher than outdoor air. Unsealed return ducts pull in pollutants, allergens, and odors, circulating them throughout your living spaces.
Aeroseal offers a game-changing solution. By sealing leaks from the inside of your ductwork, it creates a long-lasting fix that restores your system’s performance.

Here’s what you can expect from Aeroseal:

Improved energy efficiency

Balanced temperatures

Cleaner air

Reliable results

Our Aeroseal process is simple and effective. First, we prepare your ducts by sealing vents and protecting sensitive components. Then, we inject a non-toxic, water-based sealant into the system. This sealant targets leaks up to 5/8” in size, sealing them precisely without coating the duct walls. The results? A more efficient, healthier system—and you can see the difference with real-time before-and-after reports.

Why Bellingham Homeowners Trust Marr's Heating and Air Conditioning

At Marr's Heating and Air Conditioning, we’re passionate about making homes in Bellingham more comfortable and energy-efficient. With Aeroseal duct sealing, we tackle one of the most common (and costly) issues in your home. Our experienced HVAC contractors ensure the job is done right, so you can enjoy lower energy bills, better air quality, and consistent comfort.

Don’t let leaky ducts hold your home back. Take the first step toward improved comfort and efficiency today.

Aeroseal Duct Sealing in Bellingham, WA

What Makes Aeroseal Duct Sealing So Effective?

Why Bellingham Homeowners Trust Marr's Heating and Air Conditioning