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The Rheem Performance Platinum is a high-capacity indoor natural gas tankless water heater rated at 9.5 GPM and 199,900 Btu, enough for simultaneous hot water at several fixtures in a large home. It is a condensing high-efficiency unit with a 3/4-inch gas connection, wall mounting, and a 2-inch horizontal vent kit in the box. Its standout is EcoNet app control, which lets you set temperature and monitor the unit from a phone, a feature many tankless rivals charge extra for or omit. It suits households replacing a tank heater or upgrading to endless hot water, though it needs a hardwired 120-volt circuit and professional gas and venting work.
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Lowest price we've seen: $1,188.16 on Nov 14 at Amazon. Tracked across 1 store since Nov 14.
Owners generally praise the endless hot water and high flow for large homes, and many like the app control. Complaints center on installation cost and complexity, app connectivity, and the maintenance tankless units demand.
This is an indoor natural gas tankless water heater from Rheem's Performance Platinum line. It heats water on demand with a gas burner instead of storing it in a tank.
Temperature can be set and controlled from a smartphone through the EcoNet app. Overheat protection is built in. The unit mounts on a wall and runs on a hardwired 120 volt connection. The gas connection is 3/4 in.
