Rheem Performance 80-Gallon Electric Water Heater

The Rheem Performance 80-Gallon Electric is the larger-capacity variant of the Rheem Performance Electric line, sized for 5+ person households or homes with overlapping morning demand. 80-gallon class is the upper end of residential electric storage — beyond this, conversion to tankless or heat-pump becomes the typical path.

Specs: 80 gallons stored, two 4500W heating elements (240V), UEF 0.93, 84-gallon first-hour rating, 6-year tank and parts warranty. Glass-lined steel tank, magnesium anode rod. About 60" tall × 28" diameter — larger floor footprint than 50-gallon units.

The 80-gallon capacity covers heavy household demand. 84-gallon FHR exceeds peak-hour demand for nearly any residential scenario. The trade-off is install footprint (28" diameter requires wider closet space) and standby losses (larger surface area means slightly more continuous heat loss).

Right buyer: 5+ person households or households with extreme overlap demand (multiple morning showers + appliance use) where 50-gallon insufficient. Also right for households with solar PV and net metering — the larger thermal storage absorbs more excess daytime PV production.

About $899 unit, $1,500 installed. For homes considering heat-pump upgrade, the AO Smith Voltex 80-gallon heat-pump runs at one-quarter the operating cost — heat-pump nearly always wins for 80-gallon-class household demand if the install location supports it.