Best Lightweight Water Heaters in 2025

Daisy
Last Updated: Nov 5, 2025

At a Glance: Our Top Picks for Lightweight Water Heaters

Ariston Andris 2.5 Gallon 120-Volt Corded Point of Use Mini-Tank Electric Water Heater
#TOP1
Ariston Andris 2.5 Gallon 120-Volt Corded Point Of
9.7
PM SCORE
Ariston Andris 8 Gallon 120-Volt Point of Use Mini-Tank Electric Water Heater
#TOP2
Ariston Andris 8 Gallon 120-Volt Point Of Use
9.7
PM SCORE
Ariston 12 Gal POU Electric Water Heater
#TOP3
Ariston 12 Gal Pou Electric Water Heater
8.9
PM SCORE

* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.

Summary of the Best Lightweight Water Heaters of 2025

Ariston Andris 2.5 Gallon 120-Volt Corded Point Of Use Mini-Tank Electric Water Heater

ARISTON
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Ariston 8.11

Features

Compact design; wall or floor mounted (wall bracket included)

Provide immediate hot water at the point of use; install as booster or standalone

Easy installation; installs right at the point of use with water connection and standard 110/120 Volt outlet

6-year limited warranty on tank, 2-year warranty on parts

TitanShield exclusive technology that fully protects inner surface against corrosion; robust environmentally safe insulation increases energy efficiency

Ariston Andris 8 Gallon 120-Volt Point Of Use Mini-Tank Electric Water Heater

ARISTON
15.25 X 17.50 X 17.50 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Ariston 8.00

Features

Compact design; wall or floor mounted (wall bracket included)

Provide immediate hot water at the point of use; install as booster or standalone

Easy installation; installs right at the point of use with water connection and standard 110/120 Volt outlet (requires hard wiring)

6-year limited warranty on tank, 2-year warranty on parts

TitanShield exclusive technology that fully protects inner surface against corrosion; robust environmentally safe insulation increases energy efficiency

Ariston 12 Gal Pou Electric Water Heater

ARISTON
ARI POU-12 120V 1500W
15.80 X 15.80 X 22.50 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Ariston 8.06

Features

Compact designed 12 gallon electric water heater. Provides instant hot water at point of use. 6-year limited warranty on tank.

Durable glass-lined heavy gauge carbon steel tank that tolerates high temperatures for years of trouble-free service.

Immersed screw-in heating element transfers heat directly to water, offering maximum recovery efficiency and direct, 98% heat transfer. Maximum temperature capability of 160 degrees.

Versatile to fit any installation condition. Easy to wire electrical connections.

Hard wired electrical connection; Recommended circuit breaker size: 15 Amps

Ariston 19 Gal Pou Electric Water Heater

ARISTON
ARI POU-20 120V 1500W
18.20 X 18.20 X 25.50 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Ariston 8.00

Features

Compact designed 19 gallon electric water heater. Provides instant hot water at point of use. 6-year limited warranty on tank.

Durable glass-lined heavy gauge carbon steel tank that tolerates high temperatures for years of trouble-free service.

Immersed screw-in heating element transfers heat directly to water, offering maximum recovery efficiency and direct, 98% heat transfer. Maximum temperature capability of 160 degrees.

Versatile to fit any installation condition. Easy to wire electrical connections.

Hard wired electrical connection; Recommended circuit breaker size: 15 Amps

Ariston Aures Pro 36Kw 240-Volt 7.02 Gpm Whole Home Electric Tankless Water Heater

ARISTON
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Ariston 8.06

Features

Powerful enough to supply endless, on-demand hot water for your entire home

Save Space; compact design allows for installation flexibility to provide hot water where you need it

Self-modulating power control and smart control logic digital display ensures steady output temperature

Tankless water heaters have a 20 year lifespan; heating elements made of dependable copper help corrosion resistance

Energy is activated only when hot water is used, giving you an unlimited hot water supply with no energy wasted keeping stored water hot

Ariston Aures Slim Multi 10.5Kw 240-Volt 2.04 Gpm Point Of Use Electric Tankless Water Heater

ARISTON
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Ariston 7.95

Features

Endless hot water, instant comfort

Space saving compact design; Eliminates the need for a recirculation line and is great for remote locations

Hot water on-demand; No water wasted while waiting for hot water to arrive from a tank

Easy installation; all that is required is a cold water line and an electrical connection to install this water heater at the sink

Energy is activated only when hot water is used, giving you an unlimited hot water supply with no energy wasted keeping stored water hot

Ariston Aures Pro 18Kw 240-Volt 3.51 Gpm Whole Home Electric Tankless Water Heater

ARISTON
12.70 pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Ariston 7.95

Features

Powerful enough to supply endless, on-demand hot water for your entire home

Save Space; compact design allows for installation flexibility to provide hot water where you need it

Self-modulating power control and smart control logic digital display ensures steady output temperature

Tankless water heaters have a 20 year lifespan; heating elements made of dependable copper help corrosion resistance

Energy is activated only when hot water is used, giving you an unlimited hot water supply with no energy wasted keeping stored water hot

Top 10 water heaters Brands on Amazon

Here is the list of top-rated brands that were evaluated by PM.

Brand Count
Ariston 7

Top 10 water heaters Brands Pie Chart


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