Rinnai Raises the Bar for Electric Heat Pump Water Heating with New REHPW Series

PEACHTREE CITY, Ga. (November 5, 2026) —Rinnai America Corporation, a leading manufacturer of innovative, energy-efficient water heating and home comfort solutions, introduces the REHPW Series Electric Heat Pump Water Heaters. An evolution of Rinnai’s REHP Series, the new units offer greater connectivity, installation flexibility and hot water delivery.

Available in 50-, 65- and 80-gallon capacities, the REHPW Series uses heat pump technology to extract heat from the surrounding air and convert it to hot water, producing zero emissions at the point of use. With Uniform Energy Factors (UEF) up to 4.0, it ranks among the most efficient and sustainable residential water heating solutions available today.

“The REHPW Series builds on an already highly efficient product with thoughtful enhancements that bring even more value to homeowners and PROs,” said Frank Windsor, President, Rinnai America Corporation. “It also reflects our commitment to offering solutions across energy sources and to Creating a Healthier Way of Living.”

New REHPW features include Wi-Fi capability for greater control and monitoring, top and side water connections for more installation options, and a top air inlet and top air exhaust that allows for key zero-clearance installation on the side, accommodating a wider range of installation spaces. A new third thermistor in the 50- and 80- tanks also helps optimize hot water performance.

The REHPW Series delivers a First Hour Rating of up to 91 gallons, depending on capacity, and features 4.5/4.5 kW backup elements for added comfort, plus five operating modes to meet varying hot water demands and a variable-speed fan designed for quiet operation.

Ergonomic handles assist with transport and placement, while a side-sliding horizontal air filter provides convenient access for cleaning and maintenance. The units are also duct-ready for tighter spaces with an optional ducting kit. 

Along with ENERGY STAR^® and NEEA Tier 4 certifications and Title 24 compliance (+JA13), the REHPW Series now carries CTA-2045 (AC) Certification (Level 2), helping homeowners meet the highest qualifications for local and state utility demand-response rebates. The heat pump also operates at ambient temperatures down to 37°F, allowing more days of efficient operation.

The REHPW Series includes a 10-year warranty on the tank and other parts and a one-year labor warranty. For more information, visit rinnai.us.

About Rinnai:

Rinnai America Corporation, a subsidiary of Rinnai Corporation in Nagoya, Japan, was established in 1974 and is headquartered in Peachtree City, Georgia. Rinnai Corporation manufactures gas appliances, including tankless water heaters, a wide range of kitchen appliances, and heating and air conditioning units. As the technology leader in its industry, Rinnai is the largest gas appliance manufacturer in Japan, has the highest efficiency of any tankless water heater available in the United States and Canada, and is the No. 1 selling residential gas tankless condensing water heater brand in Canada. Annual corporate revenues, including those of its subsidiaries, are in excess of $3.3 billion. With a global perspective to create 21st-century products for the home and business, Rinnai Corporation commits itself to safety and Creating a healthier way of living^®. For more information about Rinnai’s entire product line, visit www.rinnai.us. 

Copyright 2026. All rights reserved. Rinnai^® and Creating a healthier way of living^® are the registered trademarks of Rinnai Corporation used under license by Rinnai America Corporation.

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Rinnai Media Contact: 
Amy Evans, PR Account Manager
amy@millerbrooks.com

Miller Brooks