Cleaner air and tighter ducts
Dust, smoke season and leaky ducts all show up in the air you breathe. We offer filtration, humidity control and Aeroseal duct sealing to fix the cause, not just the symptom.

What we do
- Aeroseal duct sealing from the inside
- Standard, medium and high-capacity air filter systems
- Whole-home humidifiers and dehumidifiers
- Ductwork repair, fabrication and installation
- Filter and system checks during every maintenance visit
Signs your indoor air needs attention
Not sure? Call (509) 586-9464 and describe what’s happening.
- Dust that comes back days after cleaning
- Rooms that are stuffy or uneven from one end of the house to the other
- Dry skin, static and cracked wood floors in winter
- Smoke or allergy symptoms that ease when you leave the house
- Filters that clog much faster than they should
How Aeroseal works
Aeroseal blows a sealant mist through your ductwork while it’s pressurized. The particles collect at the leaks and seal them from the inside, including leaks behind walls and ceilings that can’t be reached by hand.
The system measures leakage before and after, so you can see the result.


Installed the Dayco Way
Every system we install is done so that anyone at Dayco can recognize it was installed properly: safely, to the manufacturer’s specifications and running at its best efficiency.
Afterward, a maintenance plan keeps it that way, from $18 a month.Compare plans
“You are “Top-Notch” people. I feel truly privileged that I was able to have you work on our home. Thank you a million times over. PS. Awesome customer service!”
McConnell Family
“Just a note to let you know how considerate and kind your service tech was yesterday… The system we have is old and I must admit how well he cared for it.”
Helen Hendrickson
No heat? No cooling? Call now.
Whether it’s 2 PM or 2 AM, a Dayco technician is on call.
