The Rinnai 2026 New Year Rebate Promotion is a limited-time offer designed to deliver real savings on select Rinnai water heating systems. Qualifying purchases can earn up to $250 back per unit, making it easier to invest in trusted Rinnai performance while keeping costs down.
Rebates are applied per qualifying unit, which means homeowners can save on an upgrade while plumbers and contractors can maximize savings across multiple installs or inventory purchases.
Available rebates include:
- $250 rebate for PRO Wall-Hung RCB Series
- $250 per unit for DemandDuo H-Series and R-Series
- Up to $200 per unit for REHP Series
- Up to $150 per unit for RE Series, Sensei Rx and Sensei Rxp
This promotion is valid through March 31, 2026, with all rebate submissions due by April 15, 2026. Eligible products must be purchased within the promotional period to qualify. All rebate submissions must include the eligible model serial number to qualify. For full rebate details and submission instructions, see the official Rinnai rebate information.
Browse All Eligible Rinnai Products!
Top Rinnai Rebate-Eligible Products
To help you take full advantage of the Rinnai 2026 New Year Rebate Promotion, we’ve selected one standout product from each rebate category. These models are popular for both residential upgrades and professional installs, offering a strong balance of performance, efficiency, and long-term reliability.
PRO Wall-Hung RCB Series – $250 Rebate

The Rinnai RCB Series Wall-Hung Boiler delivers commercial-grade performance in a compact, space-saving design. With high-efficiency condensing technology, it’s well-suited for larger homes, multi-zone heating, or light commercial applications. Homeowners benefit from consistent, reliable heat, while contractors appreciate its installation flexibility and proven durability.
DemandDuo R-Series – $250 Rebate Per Unit

The Rinnai DemandDuo R-Series pairs a tankless water heater with an integrated storage tank to handle high hot water demand without sacrificing efficiency. This hybrid system is ideal for large households, multi-bathroom homes, or properties with simultaneous water use. For plumbing professionals, it’s a reliable solution for high-demand installations where performance matters most.
Sensei Rx Series – $150 Rebate Per Unit

The Rinnai Sensei Rx Series Tankless Water Heater is designed for efficient, on-demand hot water with an integrated pump for faster delivery. It’s a popular upgrade for homeowners looking to reduce wait times while improving overall efficiency. Plumbers value the Sensei Rx for its advanced diagnostics and consistent performance across residential installs.
REHP Series Hybrid Water Heater – $100 Rebate Per Unit

The Rinnai REHP Series Hybrid Water Heater combines heat pump efficiency with electric backup to help reduce energy consumption without compromising hot water availability. It’s a strong option for homeowners focused on energy savings and long-term operating costs. Contractors often recommend this model for efficiency-focused upgrades or energy-conscious projects.
Don’t Miss Out on Rinnai’s New Year Savings
Whether you’re upgrading a single system at home or purchasing multiple units for upcoming installs, the Rinnai 2026 New Year Rebate Promotion makes it easier to invest in dependable, high-performance water heating. With per-unit rebates up to $250 per unit available across several popular Rinnai product lines, this promotion delivers real savings without compromising on quality or reliability.
These rebates are only available for a limited time, making now the right moment to plan ahead and lock in savings. Explore eligible Rinnai products, choose the system that fits your needs, and take advantage of this New Year offer before it ends.