Cascade natural gas Energy efficiency program rebates
Homeowners may apply for a rebate using the applications below. You will need your Cascade Natural Gas account number and product invoices.
If applying for a furnace rebate, please note only furnaces 95% AFUE or higher are eligible for a rebate. If you are unsure of your furnaces efficiency rating, click here to find your furnace model’s AFUE rating.
How to Apply for a Window Rebate: Click Here
You can apply for rebates directly from your customer account. Log in here to get started!
Installs before March 15th, 2026
Installs on or after March 15th, 2026
Be sure to confirm the proper mailing address when sending us your application:
Cascade Natural Gas Corporation
Energy Efficiency Rebate Processing
1600 Iowa St, Bellingham, WA 98229