Southwest Washington incentive increases extended


Energy Trust of Oregon is extending the increased incentives offered to residential customers of NW Natural in Southwest Washington when they install a qualifying gas furnace, tankless water heater or insulation. Customers must live in an existing single-family home or multifamily residence* and have a qualifying energy upgrade professionally installed between July 1, 2020 and March 31, 2021.

Energy UpgradeCurrent IncentiveRequirementsHow to apply
Gas furnace$1,00095% or greater AFUE. Must be home’s primary heat source. Not eligible for gas furnaces used as backup for high-efficiency heat pumps, also known as hybrid systems. A CO monitor is required on every floor with a bedroom. Online application or Form 320C-HVAC
Tankless water heater**$400
Uniform Energy Factor (UEF) must be 0.81 or greater. A CO monitor is required on every floor with a bedroom. Online application or Form 320C-WH
Attic insulation$1.25 per square footExisting insulation must be R-11 or less. Must insulate to R-38 or greater or fill cavity. Online application or Form 320C-WX
Wall insulation$0.75 per square footExisting wall, rim joist and knee wall insulation must be R-4 or less.

Exterior walls must be insulated to R-11 or greater or fill cavity. All heated exterior wall surfaces must be insulated.

Rim joists must be insulated to R-15 or greater or fill cavity.

Knee walls must be insulated to R-15 or greater for 2x4 cavities or R-21 or greater for 2x6 cavities. Attic insulation must be R-19 or higher in order for knee wall insulation to be eligible for an incentive.
Online application or Form 320C-WX
Floor insulation$0.75 per square footExisting insulation must be R-0. Must insulate to R-30 or greater or fill cavity. Online application or Form 320C-WX

*Eligible multifamily residences include side-by-side units or duplexes, triplexes or fourplexes.
**Tankless water heater bonus incentive is available through December 31, 2021.

For more information about the increased incentives for NW Natural customers in Southwest Washington, visit our Incentives for Washington Homeowners webpage or contact the Residential trade ally team at 1.866.365.3526.