Top 9 Undersink Tankless Water Heater – Water Heater Replacement Parts

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1. Ariston


Ariston Andris 4 Gallon 6 Year 120-Volt Corded Point of Use Mini-Tank Electric Water Heater

Ariston #ad - 65°f-161°f temperature range. Eliminates the need for a recirculation line. Quality you can count on: titanshield, exclusive technology that fully protects the tanks inner surface against corrosion.

Robust environmentally safe foam insulation to increase energy efficiency. Do it yourself installation: 1440-watt heating element draws 12 Amp. Electrical connection: plug-in; Relief Valve: Factory Installed; Recommended Circuit Breaker Size: 15A. Wall or floor mounted unit wall brackets & rubber feet included. Provides instant hot water at point of use. Easily accessible hot water: compact designed 4 gallon mini tank. Easy installation thanks to a standard 120-Volt outlet. Can fit virtually anywhere: dimensions pipes included: 14. 25"w x 14. 25"h x 12. 75"d; water connection: 1/2" NPT. 6-year limited warranty on tank, 2-year warranty on parts.
BrandAriston #ad
ManufacturerAriston #ad

2. Bosch Thermotechnology


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

Bosch Thermotechnology #ad - 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. Amps 12a, volts VAC 120 .

Dimensions : 13. 75 w x 13. 75 h x 1075 d inches. Long lasting quality: this electric water heater is easy to maintain and has premium glass-lined material for a long service life. Thermal efficiency is 98%. 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. Independent installation: 36-37" cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source. 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.
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

3. thermoflow


CSA Certified 4.7kW at 240 Volts Wall Mounted, Elex3.5 Point of Use On Demand Instant Hot Water Heater for Sink Wash Only Wall Mounted, Thermoflow 3.5KW Mini Tankless Water Heater Electric

thermoflow #ad - Compact design - super compact designed, frees up floor space for more storage, even smaller than a shoe box. Upgraded must hardwired attached a fixed power cord around 28". High efficient, saving energy.

Endless instant hot water - no need to preheat before using. High quality alloy bare heating element has good corrode resistance and acid-resisting performance, with longer lifespan, instantaneous heating efficiency up to 99%. Exceptionality durable - instant hot water thanks to rapid and maintenance-free bare wire heating systems. Required wire: 1 x 12AWG. Small tankless water heater for single sink wash use only - Save up to 60% on your water heating cost with an Thermoflow electric tankless water heater.

Avoid distribution, start-up and technical systems losses as well as circulation and storage losses. Dimensions: 7. 4" x 5. 4" x 3. 4"; weight: 3lbs; pipes fittings: 1/2”NPT, Electrical requirements: 3. 5kw at 208 volts or 4. 7kw at 240 volts, nominal pressure: 150PSI.
Brandthermoflow #ad
Manufacturerthermoflow #ad
Height3.4 Inches
Length7.4 Inches
Width5.4 Inches
Part NumberElex 3.5
ModelElex 3.5



Camplux Tankless Water Heater Electric with LED Display 120V Instant Water Heaters Under Sink 3.5kw TE04

CAMPLUX #ad - Multi-angled mounting: the compact size instant electric water heater requires a connection of 1* 40a circuit breaker & 10 awg wire. The minimum water flow for activation just need 04 gpm only for one sink. Enjoy instant and endless hot water.

Please make sure it is the right size for you: 3. 5kw at 120v, school, water pipes fitting: 1/2" NPT male. Stainless steel and copper component for high efficiency and durability. Nfs approved, offer lead-free water. Can be mounted Multi-angled, hospital, product dimensions 7. 8" x 6. 3" x 3. 9", ideal for kitchen, wet bars, hair salon and boats. Note: this mini water heater is only suitable for sink use, not for bathing.

Etl safety certified, leakage and overheat protection device to ensure your safety. Rotatable led display: 120v tankless water heater features an upgrade rotatable digital temperature display and touch control panel, show you the easy reading output water temperature at real-time and setting ideal temperature just by finger. Easy to get hot water between 85°F - 131°F in seconds. Reliable&durble: the 3.
BrandCAMPLUX #ad
ManufacturerCamplux #ad
Part NumberTE04

5. Rheem


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

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

6. EcoSmart


13KW at 240 Volts with Patented Self Modulating Technology, EcoSmart ECO 11 Electric Tankless Water Heater

EcoSmart #ad - Save space; ecosmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 11. 5 x 8 x 3. 75 inches. Ecosmart eco 11 sizing; 13-kilowatt tankless electric water heater ideal for providing hot water for a bathroom, small sink, office breakroom and other point-of-use or low-flow applications; provides between 1.

3 and 3. 1 gallons-per-minute depending on the inlet water temperature; refer to the sizing guide to select the proper solution. Endless on-demand hot water; consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature.

Save energy; ecosmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that maintains water temperature even when not being used.
BrandEcoSmart #ad
ManufacturerEcosmart #ad
Height11.5 Inches
Length3.75 Inches
Weight6.5 Pounds
Width8 Inches
Part NumberECO 11
ModelECO 11
WarrantyLifetime Warranty on electronics, exchanger and element. Warranty only covers cost of heater; does not cover labor or any incidental damages.

7. Stiebel Eltron


White, On Demand Hot Water, 23, Stiebel Eltron 239223 Tankless Water Heater – Tempra 29 Plus – Electric, Eco

Stiebel Eltron #ad - Sleek design saves space and no venting required. Requires 3 separate dedicated 40 amp breakers with 8 gauge copper wiring, and a minimum of 200 amp total service to the residence. Requires hard-wired 240 or 208-volt electric service, with a maximum draw of 28, 800 watts at 240 volts or 21, 600 watts at 208 volts. On demand a continuous and unlimited supply of hot water.
BrandStiebel Eltron #ad
ManufacturerStiebel Eltron #ad
Height14.5 Inches
Length4.63 Inches
Weight1 Pounds
Width16.63 Inches
Part Number239223

8. Eastbuy


7.87 x 4.13inch Wall Mounted Gold 30-55℃, Tankless Water Heater, 3000W Mini Electric Instant Water Heater Under Sink with LCD Display for Home Kitchen Washing US Plug 110V

Eastbuy #ad - Eco & electric & water saving safe heater, and small water flow means high temperature. If it doesn't meet your require, PLEASE DON'T BUY. Smart self adjustmentthe hot water heater adjusts power input based on flowing rate and temp setting in real time. Inner water and electricity lines are designed to run separately so as to avoid leakage or harm of scale build up.

Eastbuy tankless water heater 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. Large water flow means low temperature, dish washing, no pollution, water saving, save up to 55% on your electric cost, face washing and other scenes. It is recommended that the product be washed in winter for hand washing, which means comfortable experience, face washing and other scenes.

Safe and durableapplied with multiple protection devices, electricity saving, no pollution, every piece goes through strict tests to ensure 100% safe. It is recommended that the product be washed in winter for hand washing, no exhaust gas. The heating of the product is adjusted by the water flow regulating valve or the faucet switch. Safe heater, water saving, no exhaust gas. The temperature is adjusted by the water flow regulating valve or the tap switch.
BrandEastbuy #ad
ManufacturerEastbuy #ad
Part NumberKLH-2605



RINKMO Electric Tankless Water Heater 6KW Instant Hot On Demand Residential Electric Water Heater for Bathroom Bathtub rv Whole House Shower Sink Small

RINKMO #ad - Stable and efficient: our smart modulating technology and formula to calculate the difference between the desired temp and current temp, adjusts power input based on flow rate and temp setting in real time by our temp and flow sensors. Note before buying : please note that the 6kw tankless water heater requires 1 x 30 AMP breakers and 1 x 12 AWG wire, the Water Flow is 04gpm/1.

5l/min. Save money & time: units are designed to be highly efficient by heating water only when it's needed, creating heat without touching the metals directly, giving you hot water in seconds, no need to preheat, parts are usually replaceable, saving up to 40% energy, not minutes, rather than replacing the entire unit. Easy to install and operate, press the button to switch between Fahrenheit/ Celsius.

10 times safe system: a safer water heater, designed for whole house using especially living with babies. Inner water and electricity lines separate technology prevents from building up rust and scale inside the tank, you'll always experience fresh, clean water that's heated on demand as it passes through the unit. Save valuable space: small and mighty, the suitcase-sized wall units fit in many spaces, freeing up more usable living area in your home.
BrandRINKMO #ad
ManufacturerRinkmo #ad