Gas Tankless Water Heater
State Adapt+ STHR-199X3 Tankless Water Heater
7.5/10
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The Navien combi-boiler is a high-efficiency, all-in-one heating solution that functions as both a central space heater and a tankless water heater. Designed to deliver whole-home warmth for properties of all sizes, it easily supplies continuous hot water to power up to three showers and a dishwasher simultaneously.