Rheem water heater prices

$/GPM is the price divided by the hot water flow the heater delivers at a 45 °F temperature rise, worked out from its gas input and UEF. "Box GPM" is the maker's own maximum, often quoted at a much smaller rise, so it is shown but not ranked on. Your rise depends on your incoming water: the sizing calculator works it out from your ZIP.

$/GPM is the price divided by the hot water flow the heater delivers at a 45 °F temperature rise, worked out from its kW rating. "Box GPM" is the maker's own maximum, often quoted at a much smaller rise, so it is shown but not ranked on. Your rise depends on your incoming water: the sizing calculator works it out from your ZIP.

$/gal is the price divided by tank capacity. Compare the first-hour rating (FHR) too: it is what decides whether a tank keeps up with your busiest hour. The sizing calculator works out the FHR your household needs and the running cost.