Seal Air Leaks

Air Sealing

Sealing the shell of your home—outer walls, doors, ceiling, windows and floors—from air leaks is one of the easiest ways to increase comfort and energy efficiency. Sealing air leaks reduces drafts, controls moisture, keeps out pollutants and improves overall comfort.

Many air leaks and drafts are easy to find because they are easy to feel, like those around doors and windows. However, hiring a contractor to perform a Blower Door test, which pressurizes and depressurizes your home to measure air leakage, can help you find many of your home’s hidden leaks. (Find out more about sealing air leaks.)

Energy Trust recommends sealing air leaks to help reduce energy costs, make your home more comfortable and reduce indoor air pollution.

Customers in Oregon

There is no longer an Energy Trust incentive for sealing air leaks in single-family homes in Oregon.

Customers in Washington

$150 per residential structure

To qualify for this incentive:

  • Your home must have been built in or before 1982 and have a pre-existing condition of nine air changes per hour (ACH50).
  • Testing and sealing must be performed by technicians with Performance Tested Comfort Systems® (PTCS); Building Performance Institute (BPI), Residential Energy Analyst Program (REAP), or Performance Air Testing & Sealing (PATS) credentials and must comply with the current Existing Homes mechanical ventilation specification.
  • Your trade ally contractor’s invoice or incentive application must list air leakage pre- and post-test numbers measured in cubic feet per minute at 50 Pa (CFM50); locations of sealed air leaks; and combustion appliance zone testing results.
  • A minimum 500 CFM50 reduction must be achieved.
  • Your trade ally contractor must install a UL-listed carbon monoxide detector when a combustion appliance exists in the home, garage or other attached space.

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Incentives are subject to funding availability and may change.

Other Incentives
Owners of existing manufactured homes may qualify for free air sealing services.

NW Natural customers in Washington who heat their homes with natural gas can receive our incentives.

Oregon homeowners who heat with oil, propane, kerosene, butane or wood can conduct their own energy audit and apply for cash rebates for installed weatherization upgrades through the Oregon Department of Energy's State Home Oil Weatherization program.

Energy Trust does not pay incentives for energy-efficiency improvements that are required for building code compliance, such as remodeling, renovation or new additions to a home.

Incentives are not intended to influence consumer decisions on fuel sources.

Follow these easy steps to get cash for air sealing your home:

1: Establish your eligibility.

2: Select a trade ally contractor and have the work completed.
To receive an Energy Trust cash incentive, contact a qualified, energy-efficiency-trained Energy Trust trade ally contractor who is certified to perform an air leakage test.

3: Sign and submit your incentive application within 60 days of installation. Often, your contractor will help you complete the form.
Apply online, or mail or fax your signed and completed incentive application form, along with your contractor's invoice, marked “paid in full,” to:

Energy Trust of Oregon
Existing Homes
P.O. Box 40508
Portland, OR 97240


Please allow six to eight weeks for incentive processing and payment.

Questions? Call us at 1.866.368.7878.

NW Natural Customers in Washington 

Apply online, or mail or fax Form 320WA (PDF | Doc), along with your contractor's invoice, marked "paid in full."