Cascade Natural Gas - Conservation Incentives for New and Existing Homes

Cascade Natural Gas offers rebates for energy-efficient upgrades like windows, insulation, air sealing, water heaters, furnaces, and thermostats in Washington if you're a residential customer using natural gas for heating and/or water heating. To get a rebate, apply online, work with a qualified Trade Ally contractor, and submit your equipment invoice and documentation within the application process—allow 8-12 weeks for approval. Call 866-626-4479 for eligibility questions or to find contractors in your area.

As a Trade Ally, you must meet Cascade's program standards and be familiar with specific equipment requirements for rebates on heating, water heating, and weatherization measures. For whole-house air sealing, you're required to perform pre- and post-blower door testing and achieve at least 400 CFM reduction, or follow prescriptive guidelines per BPA specifications when paired with insulation work. Qualified work completed on or after March 15th, 2026 is eligible, and proper documentation (NFRC labels for windows, invoices, manufacturer specs) ensures faster customer reimbursement.

This utility rebate program serves Cascade Natural Gas Washington residential customers (rate schedule 503) for approved efficiency measures including windows (rebates from $5–$9 per square foot depending on U-factor), insulation, air sealing, and HVAC equipment. Program mechanics require Trade Ally contractor certification, blower-door testing for whole-house measures, and compliance with BPA and Washington Department of Commerce weatherization specs. Incentives target income-qualified customers through Low Income Weatherization partnerships with Community Action Agencies, and processing timelines are 8–12 weeks; contact the Bellingham office at 866-626-4479 or [email protected] for administration.