Washington Gas partners with area manufacturers to offer rebates on energy-efficient equipment for homeowners. Manufacturer rebates can also be combined with Washington Gas rebates for additional incentive savings to reduce upfront costs.
Available for equipment purchases from August 1 to December 31, 2025. Maryland and Virginia customers can receive an additional $100 rebate on select water heater models.
The following tankless water heaters can be combined with Washington Gas Home Energy Savings Program rebates:
MD Rebates
| Rinnai Tankless Water Heater Model | ||||
|---|---|---|---|---|
| Model Name | Equipment Type | Uniform Energy Factor (UEF) | Rinnai Rebate | Home Energy Savings Program Rebate |
| (RX 130l) REU-NB2024FF-US | Gas Tankless | 0.97 | $100 | $450 |
| (RX 160l) REU-NB2530FF-US | Gas Tankless | 0.97 | $100 | $450 |
(RXP 160l) REU-NB2530FF-US | Gas Tankless | 0.97 | $100 | $450 |
(RX 180l) REU-NB2934FF-US | Gas Tankless | 0.98 | $100 | $450 |
(RX 199l) REU-NB3237FF-US | Gas Tankless | 0.98 | $100 | $450 |
(RXP 199l) REU-NB3237FF-US | Gas Tankless | 0.98 | $100 | $450 |
VA Rebates
| Rinnai Tankless Water Heater Model | ||||
|---|---|---|---|---|
| Model Name | Equipment Type | Uniform Energy Factor (UEF) | Rinnai Rebate | Home Energy Savings Program Rebate |
| (RX 130l) REU-NB2024FF-US | Gas Tankless | 0.97 | $100 | $400 |
| (RX 160l) REU-NB2530FF-US | Gas Tankless | 0.97 | $100 | $400 |
(RXP 160l) REU-NB2530FF-US | Gas Tankless | 0.97 | $100 | $400 |
(RX 180l) REU-NB2934FF-US | Gas Tankless | 0.98 | $100 | $400 |
(RX 199l) REU-NB3237FF-US | Gas Tankless | 0.98 | $100 | $400 |
(RXP 199l) REU-NB3237FF-US | Gas Tankless | 0.98 | $100 | $400 |
Rinnai Rebate Eligibility Requirements:
- Applicants must be customers of Washington Gas.
- Purchased between August 1-December 31, 2025.
- Installed no later than January 15, 2026.
- Submitted to the Rinnai website no later than February 15, 2026 along with proof of purchase and Washington Gas bill.
- Rinnai manufacture rebates cannot be combined with any other Rinnai offer, promotion, or special pricing.