A 65 gallon tank holds enough that the heat pump can cover most of a three- to five-person household’s use without the backup element, which is where the savings come from. It’s also the size most often suggested when a 120 V plug-in model replaces a 40 or 50 gallon gas tank.
Prices were last checked October 21, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Full ranking 16
- GE Profile 65 Gal#1 of 16Full review
The pick for most homes with a 240 V circuit: the most efficient and quietest heater here, at every size.
GE Appliances Wayfair $2,349$2,3494.3087 gal240 V35 °F - Bradford White AeroTherm 65 Gal#2 of 16Full review
Bradford White’s second-generation hybrid, sold and installed through plumbers, with a 10-year tank and parts warranty and a port for utility demand-response programs.
No price4.2082 gal240 V37 °F - A.O. Smith Voltex MAX 66 Gal#3 of 16Full review
A solid 240 V heater with leak protection included, sold at Lowe’s as the Signature 900 line.
Lowe's $2,579$2,5793.8483 gal240 V37 °F - Rheem ProTerra 65 Gal#4 of 16Full review
A strong 240 V choice with Wi-Fi, widely stocked at Home Depot. GE Profile beats it on efficiency and noise.
Home Depot $2,289$2,2894.0575 gal240 V37 °F - Navien NWP500 65 Gal#5 of 16Full review
Navien’s stainless-tank hybrid, sold through plumbers, with a 10-year warranty that includes a year of labor. Its heat pump stops below 41 °F room air, so it suits a basement more than a cold garage.
No price4.0380 gal240 V41 °F - LG Inverter Heat Pump 58 Gal#6 of 16Full review
The pick for a cold garage or basement: its heat pump keeps working in rooms down to 23 °F. Sold through LG’s HVAC dealers.
No price3.9376 gal240 V23 °F - Bosch GreenTronic 7000T 65 Gal#7 of 16Full review
The Midea-built design with Bosch’s name and warranty, sold at Lowe’s.
Lowe's $3,550$3,5503.9080 gal240 V37.4 °F - Rinnai REHP65#8 of 16Full review
A Midea-built heater with Rinnai’s support network and one of the few listings on Amazon. Check the seller is a Rinnai-authorized dealer before buying.
Amazon $1,657.02$1,657.023.9080 gal240 V37.4 °F - A.O. Smith Voltex AL 66 Gal#9 of 16Full review
A solid 240 V heater with leak protection included, sold at Lowe’s as the Signature 900 line.
Lowe's $2,598$2,5983.7082 gal240 V37 °F - Midea 65 Gal Heat Pump#10 of 16Full review
The Midea original behind several heaters here, sold through HVAC contractors. Buy whichever version is easiest to get with the warranty you want.
No price3.9080 gal240 V37.4 °F - Ariston NUOS Side-Connect 65 Gal#11 of 16Full review
A non-Midea design with a leak sensor built in and a 10-year tank and parts warranty, sold through plumbing dealers. It is louder than most here.
No price3.8578 gal240 V35 °F - Senville SENWH-HP 65 Gal#12 of 16Full review
The Midea-built design sold direct by Senville, for a buyer comfortable with a smaller brand’s warranty terms.
Senville $2,199.99$2,199.993.9080 gal240 V37.4 °F - GE Profile 65 Gal 120V#13 of 16Full review
The most efficient 120 V plug-in here, and the quietest, for replacing a gas tank without new wiring. It can be rewired for 240 V later if the household outgrows it.
GE Appliances Wayfair $2,547$2,5473.4077 gal120 V35 °F - A.O. Smith Voltex 120V 66 Gal#14 of 16Full review
A 120 V plug-in with a backup element and leak shut-off included. Its certified efficiency is among the lowest here, so it suits replacing a gas tank more than replacing an electric one.
Lowe's $2,698$2,6983.2076 gal120 V37 °F - Rheem ProTerra 15 A 65 Gal#15 of 16Full review
The ProTerra for a home that only has a 15 A, 240 V circuit, such as one left by a small electric tank: it avoids rewiring but gives up some efficiency and first-hour delivery.
No price3.5554 gal240 V37 °F - Rheem ProTerra Plug-in 65 Gal#16 of 16Full review
A plug-in for replacing a gas tank in a mild-climate garage or basement without new wiring. Buy a size up, since it has no element to fall back on.
Home Depot $2,199$2,1993.1263 gal120 V37 °F
