Restrictions apply. See application for more details.

Tax credits may also be available for these upgrades.

To learn more about these tax credits visit the ENERGY STAR® website.

Ensure the single-family home qualifies:

• Must be an existing single-family home, new construction is not eligible for this incentive.
• Work completed must comply with all building codes and standards.
• For each area of the home, limit one incentive per insulation type for the lifetime of the home.
• Work performed as part of building code requirements does not qualify.
• Homes built in or after 2013 do not qualify.
• Primary heating sources that are gas, oil, propane, wood, or other non-electric sources do not qualify.

Requirements for all insulation projects:

• Work must be completed by a Wattsmart Vendor Network contractor or self-installed by the customer. Find a program-qualified contractor with the Find A Vendor tool. Contractors must be on the list at the time of equipment installation.
• Insulation must be installed according to the specifications outlined in the Washington Technical Specifications Manual.
• Insulation must be installed between unconditioned and conditioned living spaces.

Additional requirements for attic insulation:

• Existing R-value must be no more than R-19.
• Final R-value depth must be equal to or greater than R-49.

Additional requirements for wall insulation:

• Existing R-value must be no more than R-0.
• Final R-value depth must be equal to or greater than R-13 or fill cavity.
• Electrically cooled homes do not qualify.

Additional requirements for floor insulation:

• Existing R-value must be no more than R-0.
• Final R-value depth must be equal to or greater than R-11 or fill cavity.
• Electrically cooled homes do not qualify.

Additional program rules:

• Incentive application and supporting documentation must be postmarked or submitted online within 90 days of equipment installation.
• Application must be submitted within 90 days of purchasing your new energy-efficient product.
• Incentive may not exceed total cost of the project.
• Self-installed insulation is eligible for incentives on materials only.
• For each area of the home, limit one incentive per insulation type for the lifetime of the home.
• Incentive is paid by square footage of installed insulation.

Required documents:

• Incentive Application, completed and signed*
• Itemized receipt or contractor invoice must include:
  • Product and/or installation costs (materials, labor, service)
  • Date work initiated
  • Date work completed
  • Square footage of area(s) insulated
  • Pre-existing R-value
  • Added R-value
  • Retailer and/or trade ally business name
• Third Party Payment Addendum (only for homeowners and other third-party entities not listed on account and applying for incentives).
• IRS W-9 Form, if applicable**

To ensure your home is eligible for an incentive and below the maximum insulation depth requirements, please use the Insulation Depth Calculator. Prior to your contractor recording measurements, take a peek in your attic and do it yourself!

*If mailing, please make copies for your records and note the date mailed on the application.
**Applicable only to businesses and non-individual customers, including landlords, applying for incentives.

Incentives are associated with the Home Energy Savings (HES) program January 1, 2024 tariff filing approved by the Washington Utilities and Transportation Commission. All incentives are subject to change with 45 days notice. Additional terms and conditions may apply.

Definitions:

Electric heating is defined as a permanently installed system consisting of an electric furnace, heat pump, or electric zonal heating system (baseboard or ceiling/wall heaters) serving as the home’s current primary heat source. Space heaters do not qualify.

Electric cooling is defined as gas heating and a permanently installed electric heat pump, or ducted electric central air conditioner serving as the home’s current primary cooling source. Room air conditioners and evaporative coolers do not qualify.

Non-electric heating or cooling is defined as a heating or cooling system with gas, oil, wood heating, pellet stoves, or propane serving as the home’s current primary heat or cooling source.