10 Best Electric Tankless Water Heater For Rv of December 2025

• CONVENIENT HOT WATER HEATER: 4 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%. Dimensions : 13.75 W x 13.75 H x 13.5 D Inches
• LONG LASTING QUALITY: This electric water heater is easy to maintain and has premium glass-lined material for a long service life. (Amps 12A, Volts (VAC) 120)
• INDEPENDENT INSTALLATION: 36-37" cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source
• FAST RECOVERY RATE: Eliminates long waits for hot water at your sink, get on demand hot water at your every need (supplies up to 2 sinks at a time)
• EASILY MOUNTED: Can be shelf, wall or floor mounted (bracket included); simply tap into the cold water line and install the water heater directly at the sink to provide hot water

Bosch Thermotechnology

• ADJUST IT TO YOUR EXACT NEEDS EFFORTLESSLY! Our electric tankless hot water heater features 4 power levels (1-4) so you can easily tailor its performance to your family’s needs. Adjust the current from 5 amps - 30 amps resulting in 1 kW to 3.4 kW of power (120v), which is ideal for any home application. Plus, you can easily adjust the temperature using the Water Flow Regulator included in the packaging.
• PATENTED TECHNOLOGY, NO COIL METALLIC ELEMENTS, FREE MAINTENANCE! That’s right! Our tankless hot water electric heater will create heat without direct contact with metals, which will in turn prevent corrosion and limescale deposit as a result, you will have to spend $0 on maintenance.
• HOT WATER ANYTIME YOU WANT WITHOUT ANY HASSLE! The Sio Green best premium mini tankless water heater point of use is here to help you enjoy your hand wash or wash the dishes with warm water anytime you want without any fuss. The insta infrared heating design will use 110 volt and heat ONLY the water you use with high temp, thus allowing you to save time and money!
• SAVE YOUR BATHROOM OR KITCHEN SPACE WITH OUR COMPACT WATER HEATER, with less than 20 inch length which is not only ideal for small bathrooms, storage, kitchens, sink, rv or cabinets but can be also whole house residential, commercial. The ergonomic size and simple yet innovative construction will allow you to install it almost anywhere or use it as a booster with your tank, including hotels, stores or restaurants delivering endless gallon of hot water on demand.
• 100% SATISFACTION OR YOUR MONEY BACK! That’s our unconditional guarantee! If you are not 100% satisfied with your budget-friendly, space-saving and ultra-practical tankless water heater within 30 days, we will offer you a free replacement or your money back. No questions asked! What are you waiting for? Get yours now while supplies last!

Sio Green

• CONVENIENT HOT WATER HEATER: 2.5 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%. Dimensions : 13.75 W x 13.75 H x 10.75 D Inches
• LONG LASTING QUALITY: This electric water heater is easy to maintain and has premium glass-lined material for a long service life. (Amps 12A, Volts (VAC) 120)
• INDEPENDENT INSTALLATION: 36-37" cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source
• FAST RECOVERY RATE: Eliminates long waits for hot water at your sink, get on demand hot water at your every need (supplies up to 2 sinks at a time)
• EASILY MOUNTED: Can be shelf, wall or floor mounted (bracket included); simply tap into the cold water line and install the water heater directly at the sink to provide hot water

Bosch Thermotechnology

• The product is highly durable
• The product is easy to use
• Manufactured in China
• Heating elements are durable and are threaded for easy replacement
• Activation Flow - 0.3 GPM

Ecosmart

• CONVENIENT TANKLESS HOT WATER HEATER: 3. 4 kW output tankless electric water heater eliminates long waits for hot water at point-of-use
• EASY INSTALLATION: Easily install under any bathroom or kitchen sink and get on demand hot water at your every need
• SPACE SAVING: Mounts on wall vertically or horizontally and is space saving, ultra-compact, and lightweight
• GREAT EFFICIENCY: 98% efficient with minimal stand-by loss. Water pressure range of 10-150 PSI
• 30 A

Bosch Thermotechnology

• Can provide hot water for one sink at 0.5 GPM in warmer climates
• Requires 1 x 30 amp breaker and 10 AWG wire
• For one sink at 0.5 GPM in colder climates the POU 6 is recommended
• Amperage Draw 29 amp. kW - 3.5 kW
• Connection Fittings 1/2" NPT

Ecosmart

• 2.5-gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it
• Electric water heater is easy to maintain and has glass-lined tank for long service life
• Thermostat Control allows adjustment of water temperature.High Limit device provide protection while overheating.
• Plugs into 120 volt outlet for independent installation or in-line with a large hot water source.(Max. water pressure is 150 PSI,CSA listed Temperature & Pressure relief valve included)
• Can be shelf, wall or floor mounted ; Simply tap into the cold water line and install the water heater directly at the sink to provide hot water. Product dimension:11.75" W x 17.25" H x 10.38" D.

CAMPLUX ENJOY OUTDOOR LIFE

• 【INSTANT & SUFFICIENT HOT WATER】Applied with 5.5KW heating system, the electric water heater supplies instant, consistent and endless hot water of 116℉or higher temp shortly, no waiting for preheat nor terrible temp up & down, perfect companion for sinks. Time to get rid of those "lukewarm" toys.
• 【SMART SELF ADJUSTMENT】The hot water heater adjusts power input based on flow rate and temp setting in real time. For example, less power will be applied by the system when waterflow reduced, thus you still get ideal temperature instead of scalding hot water, which means comfortable experience. Optimal energy efficiency of 98% saves considerable electric charge.
• 【CONVENIENT USE】The tankless water heater comes with digital display & touch control panel so temp setting is easy job. Now turn on the tap and let the smart unit do the rest, you needn’t go through hard lesson about temp setting by a mixer tap without any hint. The Black model comes with Remote control, useful for installation under sink.
• 【SAFE and DURABLE】Applied with multiple protection devices, every piece goes through strict tests to ensure 100% safe. Inner water and electricity lines are designed to run separately so as to avoid leakage or harm of scale build up. Approval by ETL and qualifies for UL, you can expect outstanding performance for years to come.
• 【POINT of USE】The sleek tankless water heater is compact as an oatmeal box, making it possible to install anywhere close to outlet and avoid energy waste. It can be mounted horizontally, vertically, obliquely, ideal for kitchen, bar, school, hospital, community and hair salon. Please verify it is the right size for you: 5.5kW@240V; dimensions 11" x 7.5" x 2.35"; pipes fittings :1/2" NPT.

ECOTOUCH

• Lifetime warranty
• Save up to 60-percent on your water heating cost with an ECOSMART electric tankless water heater
• Never run out of hot water with an ECOSMART tankless water heater
• Patented Self Modulating Technology and design
• ECOSMART tankless water heaters are 99.8-percent energy efficient.Uniform Energy Factor:0.98

Ecosmart

• CONVENIENT TANKLESS HOT WATER HEATER: 12 kW output tankless electric water heater eliminates long waits for hot water at point-of-use
• EASY INSTALLATION: Easily install under any bathroom or kitchen sink and get on demand hot water at your every need
• TEMPERATURE CONTROLED: Features thermostatic control for easy temperature output adjustments to match your preference
• IMPORTANT INFORMATION: Unit is only designed to operate on 240-Volt. Dimensions : 12.75 x 6.5 x 3 Inches
• GREAT EFFICIENCY: 98% efficient with minimal stand-by loss. Water pressure range of 10-150 PSI

Bosch Thermotechnology