Best Lightweight Water Heaters in 2025

[No Wait for Hot Water] - Point of use 1.3 gallons mini tank water heater provides instant hot water where you need it with fast recovery, reducing standby loss. Thermal efficiency up to 99%

[Small Compact for Sink] - The hot water heater is compact designed for your sink with dimensions 11.42" x 11.42" x 9.65", can be wall or floor mounted under sink / counter, plug into a standard 120V outlet. Nominal current 12amps

[Adjustable Temperature] - Thermostat with 3 temperature level settings, range from 77°F to 140°F with high temperature limit protection, also a freeze mode to prevent tank from freezing

No More Wait for Hot Water - Point of use 6.5 gallons mini tank water heater provides instant hot water where you need it with fast recovery, reducing standby loss. Thermal efficiency up to 99%. Contact us first for any product issues

Easy Installations - Dimensions 17.7" x 17.7" x 14.6" compact design, can be wall or floor mounted under sink / counter, upgraded plugin to use. Nominal current 12amps

Adjustable Temperature - Thermostat with 3 temperature level settings, range from 50°F to 149°F with high temperature limit protection, also a freeze mode to prevent tank from freezing

Instant Hot Water - Provides on demand hot water for point-of-use applications, perfect for under / over sink placement, minimal wait time to meet your hot water needs. 24 Hours standby. Draw 25Amp @ 240V

Sleek Compact Size - 10.95" x 7.4" x 2.52", Small water heater conveniently designed to fit in tight places within your home or business, like under cabinets and sinks, hair salons, bar counters and hotel receptions, saving valuable storage space

Long-lasting Quality - Cast aluminum heating element uniquely desgined to separated from water while heating, significantly reducing scale, corrosion and mineral buildup, achieving long-life service with low maintenance. SUS 304 stainless steel water tube

Instant Hot Water-Maximum power output can reach 68,000 BTU/Hr. Rated at 2.64 GPM, no need to preheat, providing endless hot water on demand and activates only when in use.

0.7 PSI Low Water Pressure Startup-2 magnetic water flow sensors, ensuring the unit work at low water pressure and stable water flowing to meet a wide range of usage for those in water shortage areas.

Multiple Protection Ensure Your Safety-Featuring overheating and flameout protection, the gas supply will shut off automatically under unexpected flameout or high water temperature over 176 °F. Anti-freezing apparatus draining the stock water to avoid damage of freezing under cold areas to the machine itself or in case of a long time no use.

HOT WATER IN 5 SECONDS-Rated at 4.23 GPM, maximum power output can reach 110,000 BTU/Hr. No need to preheat, providing endless hot water on demand and activates only when in use. Perfect for camping, hiking, fishing, beach, road trip, etc.

3.0 PSI WATER PRESSURE STARTUP-Equipped with a magnetic water flow sensor, allowing the unit to work at low water pressure, stable water flowing to meet a wide range of usage for those in water shortage areas, including rural areas, RV's and Boats.

MULTI SAFETY PROTECTION-Anti-freezing apparatus draining the stock water to avoid damage of freezing under cold areas to the machine itself or in case of a long time no use. Featuring overheating and flameout protection, the gas supply will shut off automatically under unexpectedly flame out or high water temperature over 176 °F.

[Endless On Demand Hot Water] - Consistent hot water that never runs out when you need it. Continuously detect water temperature and flow rate to ensure efficient heating and stable performance within 1°F of your selected temperature. REQUIRES 2 SET of Double-pole 30AMP Breakers

[Last Long & No Leaking] - Alloy metal housing & water ports, heating element separated from water tube significantly reducing scale, corrosion and mineral buildup on the element, achieving better performance and low maintenance.

[Save Money and Space] - Self-modulating technology regulating the amount of energy required to heat water only when you need it with 99% efficient, saving up to 60% on water heating cost comparing to traditional tank water heater. Wall mounted compact size with no water tank, convenient for any spaces, saving floor space and fitting into tight spaces

[Instant Unlimited Hot Water] - REQUIRE 2 x Double-pole 40AMP Breakers to Achieve 240V for this On demand tankless electric water heater, providing hot water in 3 seconds when you need it and as long as you need, eliminating wait time, never run out of hot water again and No More cold shower

[Save Money and Space] - Self-modulating technology regulating the amount of energy required to heat water only when you need it with 99.8% efficient, saving up to 60% on water heating cost comparing to traditional tank water heater. Wall mounted compact size with no water tank, convenient for any spaces, saving floor space and fitting into tight spaces.

[Smart Operation] - Auto adjusting energy consumption basing on income water temperature and flow, ensuring maximum efficiency, continuous stable temperature and optimal power usage. Digital temperature display allowing adjustment in 1° increment from 80°F to 140°F. Heating element separated from water tube significantly reducing scale, corrosion and mineral buildup on the element, achieving better performance and low maintenance.

[Instant Unlimited Hot Water] - REQUIRE 3 SET x Double-pole 40AMP Breakers to Achieve 240V for this On demand tankless electric water heater, providing hot water in 3 seconds when you need it and as long as you need, eliminating wait time, never run out of hot water again and No More cold shower. Flow Rate 5.27GPM @35°F Rise

[Self-modulating Power] - Self-modulating technology regulating the amount of energy required to heat water only when you need it with 99.8% efficient, saving up to 60% on water heating cost comparing to traditional tank water heater. Wall mounted compact size with no water tank, convenient for any spaces, saving floor space and fitting into tight spaces.

[Stable Water Temperature] - Auto adjusting energy consumption basing on income water temperature and flow, ensuring maximum efficiency, continuous stable temperature and optimal power usage. Digital temperature display allowing adjustment in 1° increment from 80°F to 140°F. Heating element separated from water tube significantly reducing scale, corrosion and mineral buildup on the element, achieving better performance and low maintenance.