Replace your water heater

Find heaters of the same type and size among 2,426 basic models on this site.

Match your old type: gas or electric storage, heat pump, or gas or electric tankless.

Every model here was certified in the past year.

Your old heater's label

Brand and model number: The names on the heater's label.
Type and fuel: Tank or tankless, gas or electric, and the vent connection.
Size or flow: The sold gallons for a tank, or gallons per minute for a tankless heater.

Draw pattern: The amount of daily hot water use in the efficiency test.
UEF: The uniform energy factor measures energy delivered as hot water per unit used. Compare it within one draw pattern.

Water heater size groups and hot water output
Type and group	Models	Hot water in the first hour (gal) or flow at a 67°F rise (gal/min)
Gas storage, 30-gallon	105	46–170
Gas storage, 40-gallon	287	51–91
Gas storage, 50-gallon	325	65–187
Gas storage, 65-gallon	1	157
Gas storage, 80-gallon	16	130–206
Electric storage, 30-gallon	95	29–60
Electric storage, 40-gallon	181	38–66
Electric storage, 50-gallon	144	40–78
Electric storage, 80-gallon	7	83–86
Heat pump, 40-gallon	87	43–73
Heat pump, 50-gallon	118	41–77
Heat pump, 65-gallon	121	46–87
Heat pump, 80-gallon	115	55–105
Gas tankless, under 4.0 gallons per minute	88	1.6–3.9
Gas tankless, 4.0 to 4.9 gallons per minute	189	4.0–4.9
Gas tankless, 5.0 to 5.9 gallons per minute	193	5.0–5.9
Gas tankless, 6.0 gallons per minute and up	17	6.0–8.5
Electric tankless, under 1.0 gallon per minute	223	0.2–0.9
Electric tankless, 1.0 to 1.9 gallons per minute	82	1.0–1.9
Electric tankless, 2.0 gallons per minute and up	32	2.2–6.5

Updated Oct 26, 2026 · Methodology

Price, labor, venting, wiring, or installation.
An older model may have no recent certification. Choose its type and size instead.
Dimensions appear where they are listed. Most models have no listed dimensions.
Matching type and size does not establish that a heater fits your space.