The Rinnai Hybrid Tank-Tankless Water Heater combines the on-demand technology of a tankless water heater with a durable 40-gallon storage tank. When used together, they offer homeowners more than twice the water-heating capacity of a traditional 50-gallon tank. The Hybrid Water Heater installs like a tank, requires a ½-inch gas line, and is compatible with a 4-inch B-vent or common vent with furnace. The unit’s hot- and cold-water connections are the same as a traditional storage tank.
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