Duct Sealing Services from Portland Throughout the Columbia River Gorge
At A&E Plumbing, Heating and Air, we seal ductwork from the inside using Aeroseal technology—so your HVAC system delivers air where you actually need it.
What Is Duct Sealing (and Why Does It Matter)?
Duct sealing is the process of locating and closing leaks in your home’s ductwork. While traditional sealing methods involve taping or mastic from the outside, we use Aeroseal, a proven, high-performance solution that works from inside your ducts.
What Duct Sealing Does
Duct sealing closes gaps and cracks in your home’s ductwork that let air escape. We use Aeroseal, a high-tech method that seals leaks from the inside—without cutting into walls or ceilings.
Why Leaky Ducts Are a Problem
When ducts leak, air escapes into crawlspaces, attics, or walls—leading to uneven temps, poor airflow, and higher utility bills. It also pulls in dust, allergens, and insulation.
Signs It's Time for Duct Sealing
Hot or cold spots in certain rooms. Rising energy costs. A system that never seems to stop running. If that sounds familiar, your ductwork may be the issue. Sealing can fix it.
How Aeroseal Works: Our Sealing Process
Aeroseal allows us to seal your ducts without opening walls or ripping into ceilings. It’s clean, quiet, and highly effective. Most homes we service see a 90%+ reduction in duct leakage—often going from 30% leakage down to under 5%.
1. Pre-Test & Prep
We start by blocking off your vents and running a detailed system test to measure exactly how much air is escaping through leaks in your ductwork.
2. Sealing Process
The Aeroseal machine mists non-toxic, water-based particles into the duct system. These particles naturally find leaks and build up at each gap or hole—sealing cracks up to ⅝ inch wide.
3. Post-Test & Proof
After sealing, we test again and provide a printed report showing before-and-after leakage rates, so you can see exactly how much your system improved.
Duct Sealing Cost
We charge a flat rate of $4,200 per system (not including tax). Our services include:
Full duct sealing with Aeroseal
Pre- and post-leakage testing
Printed results for your records
All labor and sealing materials
Bundle and Save: Duct Cleaning + Sealing
For best results, your ductwork should be clean before sealing. That’s why many homeowners choose to bundle both services. If you have a duct cleaning done within 90 days of sealing, we’ll credit the cost of cleaning toward the sealing service.
Ask us about this option when scheduling!
Duct Sealing Services From Portland Throughout the Columbia River Gorge
At A&E Plumbing, Heating and Air, we’ve been providing expert duct sealing services throughout the Columbia River Gorge, the Gresham–Portland Metro area, and Southern Washington for over 16 years.
We know how the Pacific Northwest’s damp climate, extreme seasonal swings, and older home construction can lead to air leaks, energy loss, and uneven comfort. That’s why we use advanced Aeroseal technology to seal duct systems from the inside—improving airflow, efficiency, and overall comfort.
Not sure if we serve your area? Just ask—we’re here to help.
Schedule Your Duct Sealing
With over 16 years of experience serving the Columbia River Gorge, Gresham–Portland Metro area, and Southern Washington, we know how to optimize HVAC performance in the unique climate of the Pacific Northwest.
We use industry-leading tools, proven processes, and a respectful, professional approach on every job—whether you’re sealing ducts in a brand-new home or upgrading an older system.
If you're ready for better comfort, cleaner air, and real energy savings, duct sealing is one of the smartest investments you can make in your home.
Let’s make sure the air you pay to heat and cool actually stays inside your home—where it belongs.
Schedule Your Duct Sealing!
After submitting your request, you can expect a confirmation phone call from one of our team members and a proposed appointment time within 1 business day.
Your Duct Sealing Questions Answered
Below you'll find answers to the most frequently asked questions about ductwork and sealing services. If you still have questions, feel free to reach out to us through our contact page.
How do I know if my ducts are leaking?
If you have hot or cold spots, inconsistent airflow, or rising energy bills, your ductwork could be leaking air into unconditioned spaces. We’ll test your system at the start of the appointment to measure exactly how much air is being lost.
Will I see or feel anything during the sealing process?
Is Aeroseal safe for my family and pets?
Yes. Aeroseal is a non-toxic, water-based sealant that’s safe for use in homes with children and pets. It’s been used in hospitals, schools, and thousands of residences nationwide, with no impact on air quality or health.
The Homeowner’s Ductwork Resource Hub
From quick DIY fixes to knowing when it’s time to seal or clean your ducts, our industry-leading blog delivers everything you need to stay comfortable and save money.
What our customers are saying
"We had two service calls in one week for two different issues! They knew their job, were competent, and were very personable guys! They can come back to my house any time!"
Mary Z.
"The technicians were great! Explained the issue and fixed it quickly. Very happy with our service."
Dawn L.
"Very experienced and knowledgeable. Highly recommended."
Mark W.