Aeroseal duct sealing in the Spokane area typically costs $2,000 to $4,500 for an average single-family home. Larger homes, multi-zone systems, or duct systems with very high baseline leakage may run $5,000 to $7,000. The investment usually pays back in 3–7 years through lower energy bills, with comfort and air-quality improvements starting day one.

Pricing factors

  • Total duct system size and complexity
  • Baseline leakage (more leakage = longer seal time)
  • Number of returns and zones
  • Whether pre-seal duct cleaning is needed first
  • Utility rebates available in your area

We test before and after so you can see exactly what was sealed. See Aeroseal service, and ask about duct cleaning bundles plus financing.