Rinnai launched the I-Series Boiler, a tankless gas water heater with the ability for simultaneous usage for home heating and domestic hot-water production. The boiler has a bypass servo valve—which enables precise control of hot-water temperature—a 95% annual fuel utilization efficiency, and an outdoor reset that optimizes heating performance, according to Rinnai. It’s available in both combi and heat-only models and comes standard with multi-zone heating control. Contact a local distributor for pricing. rinnai.us

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