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Rinnai America Corporation (aka Rinnai) is one of the USA’s top energy‑efficient tankless water heaters. The company recently got more recognition of that when its REHP Series Electric Heat Pump Water Heater won a 2026 Green GOOD DESIGN™ Award. Rinnai will be at our upcoming Electric Home Show in Honolulu, Hawaii, where you can learn more about the REHP Series Electric Heat Pump Water Heater — get your tickets here if you plan to attend. Otherwise, let’s share a bit more about the water heater and its new award in the article below.
“The award is presented by The European Centre for Architecture Art Design and Urban Studies and The Chicago Athenaeum: Museum of Architecture and Design and recognizes the world’s most important examples of sustainable design,” Rinnai shares. “Selected from hundreds of submissions spanning more than 30 countries, the REHP Series was recognized for advancing energy-efficient, environmentally responsible product design. The Green GOOD DESIGN program, now in its 18th year, builds on the original GOOD DESIGN Awards founded in 1950 by Eero Saarinen and Charles and Ray Eames and remains one of the most respected honors in global design.”
The REHP Series does what all good heat pump water heaters do — saves you money, keeps you comfortable, and lowers greenhouse gas emissions and air pollution. And it does that very well. Here’s a bullet list of highlights:
- Meets the highest level of efficiency standards and rebate requirements
- Exceptional Efficiency up to 4.0 UEF
- Up to 91 Gallons First Hour Rating
- NEEA Tier 4 Compliant
- 5 Operating Modes to meet any Demand
- Variable Speed Fan for Whisper Quiet Operation
- Wide Operating Range 37F-109F
- Demand Response Enabled with CTA-2045 Port
- Minimum Clearance for Flexible Installation
- Optional Duct Kit and Leak Sensor Accessories
Many more details can be found in this brochure. You can also use a custom energy savings calculator here. And here are some key specs:
Is it an Apple TV or a Lamborghini of household appliances? Well, no, not exactly. But this heat pump water heater series is a leader in the field, and winning the 2026 Green GOOD DESIGN™ Award is proof of that.
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