80-Gallon Water Heaters

The 80-gallon water heater is the high-capacity residential electric size — used in 4–6 person households on all-electric service, properties without natural gas, and electrification-committed installs. 80G is primarily an electric category (the equivalent capacity in gas is the 75-gallon).

Top 80-gallon picks

Resistance electric 80G

• Rheem Performance 80G Electric (XE80T10ST45U1) — 6-year, volume entry.
• AO Smith Signature 100 80G Electric (EJC-80) — Lowe's primary.
• Bradford White 80G Electric (M-I-80L6DS) — plumber channel.

Heat pump 80G (the modern pick)

• Rheem ProTerra 80G Heat Pump (XE80T10HD50U1) — 3.55 UEF, 10-year warranty, $2,000 IRA credit.
• AO Smith Voltex 80G Heat Pump (HPTU-80N) — direct ProTerra competitor.
• Bradford White AeroTherm 80G — plumber-channel heat pump.

80G applications

• 4–6 person all-electric households running 2+ simultaneous demand points
• Electrification upgrade from gas — 80G electric matches gas 75G capacity
• Homes with 3+ bathrooms on all-electric service
• Properties without gas service where high capacity is needed

80G heat pump vs resistance — the math winner

For 80G installs, the heat pump (ProTerra/Voltex/AeroTherm) is almost always the right pick for long-horizon owners:

• Operating cost: $250–$350/year (heat pump) vs $700–$1,000/year (resistance)
• Annual savings: $400–$700/year
• 12-year savings: $4,800–$8,400 vs upfront premium of ~$1,000 (before IRA tax credit)
• Warranty: 10-year (heat pump) vs 6-year (resistance)

Heat pump wins on every dimension when the install fits. The constraint is install location — 1,000+ cu ft ambient air, condensate drain, 7+ ft ceiling clearance. See heat pump category for full requirements.

80G install

• 30-amp 240V dedicated circuit (verify panel capacity)
• 60"+ height for resistance; 75"+ for heat pump (verify ceiling clearance for heat pump)
• 27" diameter — won't fit standard 22" closet doors
• Heat pump: condensate drain or pump required

Bottom line on 80-gallon water heaters

For 80-gallon installs, the heat pump variant (Rheem ProTerra 80G, AO Smith Voltex 80G, Bradford White AeroTherm 80G) is the right pick where the install location supports it. The operating-cost savings ($400–$700/year) plus the federal IRA $2,000 tax credit make heat pump the clear long-horizon math winner. For installs where heat pump can't fit (no basement, low ceiling, no condensate drain), fall back to resistance 80G electric. For natural-gas-equipped homes, the gas 75G equivalent is in 75-gallon category.