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Incentives/Policies for Renewables & Efficiency

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NW Natural (Gas) - Residential Energy Efficiency Rebate Program   

Last DSIRE Review: 12/04/2012
Program Overview:
State: Washington
Incentive Type: Utility Rebate Program
Eligible Efficiency Technologies: Equipment Insulation, Water Heaters, Furnaces , Boilers, Caulking/Weather-stripping, Duct/Air sealing, Building Insulation, Windows, Tankless Water Heaters
Applicable Sectors: Residential
Amount:Air/Duct Leakage Test: $35
Air/Duct Sealing: 50% of cost
Duct Insulation: 50% of cost
Windows: $2.25 (U-Value 0.26 - 0.30) or $3.50/sq. ft. (U-Value 0.25 or less)
Window Installation Bonus: $100
Attic/Ceiling Insulation: $0.25/sq. ft.
Floor/Wall Insulation: $0.30/sq. ft.
Knee wall/Rim Joist Insulation: $0.30/sq.ft.
Trade Ally Contractor Insulation Installation Bonus: $150
Boiler Pipe Insulation: $0.50/ln. ft.
Furnace: $100
Direct Vent Unit Heater/Fireplace: $100 - $250
Boiler: $200
Water Heater: $35 or $150 (gas) or $200 (tankless)
Maximum Incentive:Air Sealing: $275
Duct Sealing: $325
Duct Insulation: $100
Equipment Requirements:Varies by efficiency measure; a list of equipment efficiency requirements is located on the program web site
Furnace: 90% AFUE or greater
Direct Vent Unit Heater: 80% AFUE +
Boiler: 88% AFUE +
Tankless Water Heater: .80 EF or better
Storage Water Heater: .62 - .66 EF for $35 incentive; .67 EF or greater for $150 incentive
Installation Requirements:Must be installed by Energy Trust contractor or another licensed contractor in Washington.
Air Sealing: minimum 300 CFM50 reduction
Duct Improvements: Minimum 150 CFM50 reduction and a minimum of 50 percent reduction in duct leakage. Existing insulation must be R-2 or less; insulate to R-11.
Web Site:

Energy Trust of Oregon administers energy efficiency rebate programs for both residential and commercial customers of NW Natural in Washington. Energy Trust is awarding the rebates and providing resources and technical assistance to interested customers. To be eligible for the residential rebate program, customers must own a home in Washington and the home must primarily be heated with gas. A variety of energy efficiency improvements are eligible for rebates, including, insulation, windows, air and duct sealing, tankless water heaters, and furnaces. After completing weatherization measures (insulation and sealing), customers can receive a $100-$150 bonus cash incentive. With the exception of water heaters, floor and ceiling insulation, all equipment must be installed by an Energy Trust contractor or a Washington-licensed contractor. For more information on efficiency requirements and exact rebate amounts, see the Washington Incentive Grid.

  Home Energy Solutions
Energy Trust of Oregon
421 SW Oak St., Suite 300
Portland, OR 97204
Phone: (866) 368-7878
Fax: (503) 546-6862
Web Site:
NCSU - home
Disclaimer: The information presented on the DSIRE web site provides an unofficial overview of financial incentives and other policies. It does not constitute professional tax advice or other professional financial guidance, and it should not be used as the only source of information when making purchasing decisions, investment decisions or tax decisions, or when executing other binding agreements. Please refer to the individual contact provided below each summary to verify that a specific financial incentive or other policy applies to your project.

While the DSIRE staff strives to provide the best information possible, the DSIRE staff, the N.C. Solar Center, N.C. State University and the Interstate Renewable Energy Council, Inc. make no representations or warranties, either express or implied, concerning the accuracy, completeness, reliability or suitability of the information. The DSIRE staff, the N.C. Solar Center, N.C. State University and the Interstate Renewable Energy Council, Inc. disclaim all liability of any kind arising out of your use or misuse of the information contained or referenced on DSIRE Web pages.

Copyright 2014 - 2015 North Carolina State University, under NREL Subcontract No. XEU-0-99515-01. Permission granted only for personal or educational use, or for use by or on behalf of the U.S. government. North Carolina State University prohibits the unauthorized display, reproduction, sale, and/or distribution of all or portions of the content of the Database of State Incentives for Renewables and Efficiency (DSIRE) without prior, written consent.