rennai demand duo Energy Manage

Rinnai Introduces Hybrid Commercial Water Heater

rennai demand duo Energy ManageRinnai has introduced a commercial hybrid water heating system that combines heat exchanger technologies from the company’s 199-BTU, Energy Star-certified C199 condensing commercial tankless water heaters with a 119-gallon tank.

The Demand Duo produces more hot water in the first hour than traditional commercial systems, has a six-year heat exchanger and tank warranty, is built for longevity and uses less energy.

The water heater also features direct vent, common venting options and single-unit/common vent room-air ability that can use the building’s existing vertical vent penetration — eliminating the need to core additional holes in walls and roofs to allow for external ventilation, which can lead to leaks.

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