Maryland Existing Home Water Heater Rebate
Storage water heater: $175 (ENERGY STAR certified, minimum 0.81 UEF). Tankless water heater: $450 (ENERGY STAR certified, minimum 0.89 UEF). Replacement of an existing unit in an existing residential dwelling, installed by a Washington Gas Home Energy Savings Network participating contractor, who submits the application. Paid as a credit on the contractor invoice or a check in 6-8 weeks. A standard atmospheric-vent gas tank (typically 0.58-0.64 UEF) does not qualify. Source: wgsmartsavings.com/programs-rebates/md/water-heaters (verified 2026-09-11).
Washington Gas pays Maryland residential customers $175 for an ENERGY STAR storage water heater (0.81+ UEF) or $450 for an ENERGY STAR tankless water heater (0.89+ UEF) when replacing an existing unit.
Guidance
Washington Gas Maryland residential customers can receive $175 for an ENERGY STAR storage water heater with at least 0.81 UEF or $450 for an ENERGY STAR tankless water heater with at least 0.89 UEF. The installation must replace an existing unit in an existing residence and run through a participating contractor.
Homeowner Tasks
- Confirm Washington Gas service
Verify the installation address is an active Washington Gas Maryland residential account.
- Keep the qualifying equipment and invoice
Retain the model number, rated UEF, ENERGY STAR evidence, final itemized invoice, installation date, and utility-account evidence.
Contractor Tasks
- Confirm participating status before installation
The installing contractor must be active in the Washington Gas Home Energy Savings Network before the work starts.
- Verify equipment and submit the claim
Confirm the applicable ENERGY STAR and UEF tier, then submit the application with the final invoice and supporting evidence.
Qualification
- Energy Star certified equipment
- Contractor enrollment required
The installing contractor must participate in the Washington Gas Home Energy Savings Network. The contractor submits the rebate application; the customer receives the benefit as an invoice rebate or a mailed check.
Not required: ahri matched pair · income-qualified · has income-qualified portion · pre-approval required · permit required · fuel switching required
Important Dates
- Program runs:
- December 31, 2026
Budget & Availability
- March 16, 2026Funded through EmPOWER Maryland surcharges, verify specific current program status online.
How to Submit
The participating contractor submits the customer application at https://wghomesavings.customerapplication.com/. Washington Gas must receive the application and all required documentation within 30 days of equipment installation. Save the submitted packet and portal receipt/reference. Payment is issued on the contractor invoice or by check, typically within 6–8 weeks.