Top 9 Undersink Water Heater – Water Heaters

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1. Bosch Thermotechnology


Shelf, Eliminate Time for Hot Water, Wall or Floor Mounted, Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon ES2.5

Bosch Thermotechnology #ad - Dimensions : 13. 75 w x 13. 75 h x 1075 d inches. Thermal efficiency is 98%. 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. Independent installation: 36-37" cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source. 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 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.
BrandBosch Thermotechnology #ad
Height13.75 Inches
Length13.75 Inches
Weight15.5 Pounds
Width10.75 Inches
Part Number7738004996
Warranty6 year warranty on unit, 2 year warranty on parts



Camplux ME25 Mini Tank Electric Water Heater 2.5-Gallon with Cord Plug,1.5kW at 120 Volts

CAMPLUX ENJOY OUTDOOR LIFE #ad - High quality built & elegant design- camplux electric water heater has glass-lined tank for long service life and easy to maintain. 43. 3‘’ cord plugs into 120 volt outlet for independent installation or in-line with a large hot water source.

Max. Saving energy & money - built in insulation foam, reduces heat loss. Elegant streamline design cover, made your kitchen more pretty. High limit device provide protection while overheating. Water pressure is 150 psi, CSA listed Temperature & Pressure relief valve included. 2. 5-gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it.

Ul approval safety - thermostat Control allows adjustment of water temperature. 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 1038" d.
Height10.38 Inches
Length11.75 Inches
Weight0.2 Pounds
Width17.25 Inches
Part NumberB0789DTY5L

3. Chronomite


Chronomite SR-20L/120 HTR SR Series Instant Low Flow Tankless Water Heater, small

Chronomite #ad - Temp. Range 90 degrees to 120 Degrees F. Designed for undersink hardwiring, horizontal installation. Rear electric knock-out. Two mounted chrome compression fittings. 3/8-inch cold water inlet and outlet connections. Temp rise at 040 gpm: 41 Degrees F.
BrandChronomite #ad
ManufacturerChronomite #ad
Height6.25 Inches
Length9.63 Inches
Weight11 Pounds
Width2.75 Inches
Part NumberSR-20L/120 HTR
ModelSR-20L/120 HTR

4. EcoSmart


[email protected], Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater

EcoSmart #ad - Can provide hot water for one sink at 05 gpm in warmer climates. Requires 1 x 30 amp breaker and 10 AWG wire. Connection fittings 1/2" NPT. For one sink at 05 gpm in colder climates the POU 6 is recommended. Amperage draw 29 amp. Kw - 3. 5 kW.
BrandEcoSmart #ad
ManufacturerEcosmart #ad
Height6 Inches
Length3 Inches
Weight4 Pounds
Width11 Inches
Part NumberPOU35
ModelPOU 3.5
Warranty1 Year Warranty on electronics, exchanger and element. Warranty only covers cost of heater; does not cover labor or any incidental damages.

5. Garosa


3000W Mini Electric Tankless Instant Hot Water Heater with LCD Display for Home Bathroom Kitchen Washing US Plug 110V Black

Garosa #ad - Simple operation: freely adjust water temperature by water flow, simple operation, you can enjoy hot water all-weather without wait. Safe use: safe heater, no pollution, lcd digital temperature display℃. High quality material: stainless construction with mini design, the connter is made of brass, the tankless water heater is durable and portable.

If you have high temperature requirements, but no heat is felt; when the inlet water temperature is high, the outgoing water is not ice, please do not buy. If it doesn't meet your require, PLEASE DON'T BUY. In order to ensure safe use, water saving, electricity saving, no exhaust gas, all current and voltage power problems are strictly tested to ensure product safety before leaving the factory.

Please kindly check the third picture which show the water flow spped and water temp. Test data. Use experience: when the inlet water temperature is very low, the outgoing water will be hotter. Notice before purchase: the water heater need a larger than 32 amps circuit breaker; the outlet water temperature won't very hot because the water heater just 3KW, so it can't be used to bath or wash hair, it can be use to wash hand or use in kitchen.
BrandGarosa #ad
ManufacturerGarosa #ad
Height0.39 Inches
Length0.39 Inches
Weight2.54 Pounds
Width0.39 Inches
Part NumberGarosadu8p6bzscm-02

6. Stiebel Eltron


White, Eco, On Demand Hot Water, Stiebel Eltron Tankless Water Heater, Tempra 15 Trend – Electric

Stiebel Eltron #ad - Eco friendly unit saves energy with auto-modulation. Continuous flow – hot showers will never be interrupted again. Silent operation – one electronic flow sensor activates the noise free water heater. Check our guides below to compare features of our various Trend and Plus models, each available in different kW levels.

Tempra 15 trend – this specific model is 14. 4kw, 240v9/208v, requires a min. Recommended household electric service of 100 A, and offers an output water temperature of 86˚ to 140˚F. Digital temperature display is easy to read, while the powerful solid copper interior heating system does the work. Enjoy continuous, on-demand hot water with an unlimited supply, when you want it without wasting any energy when not needed.

Warranties included – stiebel eltron’s top-rated electric tankless water heaters perform with the highest standards for comfort and reliability. Space & energy saver – its small, sleek white design saves space yet still provides endless hot water for your whole house, and no venting is required. Our 7-year leakage and 3-Year Parts Warranties are included with purchase.
BrandStiebel Eltron #ad
ManufacturerStiebel Eltron #ad
Height14.5 Inches
Length4.63 Inches
Weight1 Pounds
Width16.63 Inches
Part Number239214
Model15 Trend

7. Ariston


Ariston Andris 2.5 Gallon 6-Year 120-Volt Corded Point of Use Mini-Tank Electric Water Heater

Ariston #ad - Robust environmentally safe foam insulation to increase energy efficiency. Wall or floor mounted unit wall brackets & rubber feet included. Eliminates the need for a recirculation line.

Do it yourself installation: 1440-watt heating element draws 12 Amps. 6 year limited warranty on tank, 2 year warranty on parts. Quality you can count on: titanshield, exclusive technology that fully protects the tanks inner surface against corrosion. Easy installation thanks to a standard 120-Volt outlet. Electrical connection: plug-in; Relief Valve: Factory Installed; Recommended Circuit Breaker Size: 15A. Can fit virtually anywhere: dimensions pipes included: 14. 25"w x 14. 25"h x 1075"d; water connection: 1/2" NPT. Easily accessible hot water: compact designed 2. 5 gallon mini tank. 65-161°f temperature range. Provides instant hot water at point of use.
BrandAriston #ad
ManufacturerAriston #ad

8. Rheem


GRAY, Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater

Rheem #ad - Durable copper immersion two heating elements, field Serviceable. Self-modulating power control. 13kw model flow Rate: up to 3. 17 gpm. External adjustable digital thermostatic control with LED display +/1 degree accuracy. 99. 8% energy efficient. Simple installation – 1/2 NPT adapters included; side 1/2 inch Compression water connections. Water-saver shower Head – 1. 5 gpm. 54 a. Threaded for easy replacement, simple installation, digital temperature display 54 A. External controls to adjust temperature in increments of 1°f.
BrandRheem #ad
ManufacturerRheem #ad
Height3.63 Inches
Length12.63 Inches
Weight0 Pounds
Width8.25 Inches
Part NumberRTEX-13



110V-120V Electric Mini-Tank Hot Water Heater Storage,1.5KW Kitchen Household Compact Size Point-of-Use, Hot Water Output of 2.5 Gallon, 2 PCs 16” Long 1/2”FIP Stainless Steel Water Hoses,GFCI Plug

BISELONG #ad - Thermal efficiency is 98%,maximum temperature167℉,The built-in smart chip heats up to the temperature you set, and automatically Insulation when heated to the specified temperature. Safe durable & longevitymade of stainless steel and never rust,anti-leakage plug,multiple safety protection functions protect you from the risk of scald, hospital, leakage or other injury.

Premium plastic shell is corrosion resistant,This mini hot water heater is ideal for kitchen, school, bar, community and RV. Easy to usestorage tank electric water heater with easy-to-operate knob temperature adjustment design,Easy to control warmth. Vent valve, tee pipeline, pipes and other accessories are complete for quick installation without additional expenses or preparing time of accessories.

Fast recovery rateeliminates 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,8-15 minutes to heat to your desired temperature. Compact designcan be shelf, 110-220 volts. One-year warranty and 24h customer service support, wall or floor mounted Water inlet and outlet upward; Dimensions: 13. 0''l x11. 4''w x106''h; 9. 5lbs; 1/2″npt NPT.
ManufacturerBISELONG #ad