Cascade Natural Gas CorporationWArebate

Tankless Water Heater Rebate

Rebate amount

Up to $1,000

Your qualifying range

$1,000 – $1,000

Effective for installs on or after March 15, 2026. Tankless unit must have a 0.95 UEF minimum or higher. Water-heating fuel must be primarily provided by Cascade Natural Gas (CNGC). Not eligible if a multi-zone ductless electric heat pump is present.

Cascade Natural Gas offers a $1,000 rebate to residential customers who install a high-efficiency tankless natural gas water heater. Eligible units must have a Uniform Energy Factor (UEF) of 0.95 or higher and be installed by a licensed contractor in Washington State.

residentialsingle familymulti family

Guidance

Cascade Natural Gas Corporation offers a $1,000 rebate to residential customers in Washington State who install a high-efficiency tankless natural gas water heater. To qualify, the unit must have a Uniform Energy Factor (UEF) of 0.95 or higher and be installed by a licensed Washington contractor.

Homeowner Tasks

Verify utility eligibility
Confirm that your home is a residential property and you have an active Cascade Natural Gas account in Washington State.
Hire a licensed contractor
Ensure the installation is performed by a licensed contractor in the state of Washington.
Complete the claim form
Fill out and sign the required rebate claim form with your active account details.

Contractor Tasks

Install eligible equipment
Install a tankless natural gas water heater with a minimum Uniform Energy Factor (UEF) rating of 0.95.
Provide a detailed invoice
Generate a final contractor invoice that clearly lists the installed unit's model number and UEF rating.
Submit the application package
Submit the completed claim form and the detailed contractor invoice within 90 days of the installation date.

Strict Deadline: The completed claim form and contractor invoice must be submitted within 90 days of the installation.

The incentive program ends on December 31, 2027.

To prevent application delays, double-check that the UEF rating of 0.95 or higher is explicitly printed on the final invoice.

Qualification

No special qualification flags for this rebate.

Not required: energy star certified equipment · ahri matched pair · income-qualified · has income-qualified portion · pre-approval required · permit required · contractor enrollment required · fuel switching required

Paid to:Contractor or homeowner

Stackability: Can stack with federal energy tax credits. Cannot combine with other CNGC water heating rebates.

Important Dates

Program runs:: March 15, 2026December 31, 2027

Budget & Availability

August 5, 2026
Active and funded for 2026-2027.

How to Submit

Submit completed claim form and contractor invoice showing UEF rating and model number within 90 days of installation.

Program Resources

Cascade Natural Gas CorporationWA

Program Page

866-626-4479