Best Ecosmart Water Heaters in 2026

4 Piece Tankless Water Heater Flush Kit. Helps maintain and extend the lifespan of your tankless water heater

Kit comes with 3.5 gallon bucket with lid, 1/6 HP Pump, and 2 Steel hoses. Just add 2-3 gallons of vinegar or your own descaling solution

Works with most all tankless water heaters such as Rinnai, Bosch, Noritz, Rheem, Takagi, Tempra, Navien, Ecosmart, Stiebel, Eccotemp, Atmor, Trutankless, Marey Power, and others.

On demand a continuous and unlimited supply of hot water

Sleek design saves space and no venting required, It also features two different temperature memory presets, making it easy to adjust for personalized needs.

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

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

CONVENIENT HOT WATER HEATER: 7 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%. Dimensions : 17.5 W x 17.5 H x 14.5 D Inches

INSTALLED VERTICALLY OR HORIZONTALLY: This larger model can be mounted vertically (5.1 gal. of water supply) or horizontally (7 gal. of water supply)- vertical orientation is installed with the cold and hot lines on top of the unit

RELIABLE WATER SOURCE: Easily hard-wire the 7-gallon model to provide the on-demand reliable water source your home or office needs

***Kit requires 2 gallons of white vinegar*** Not included. Some tankless manufacturers recommend using vinegar or another cleanser for flushing their equipment. Can also save money if you have vinegar at home already.

Helps maintain the performance and extend the life of your tankless hot water heater. Easy directions for DIY Homeowner use.

Includes 1/8 HP Utility Pump, 6 Ft Color Coded Hoses, 3.5 Gallon Bucket with EZ Open Lid & Instructions for using vinegar. Peel Off Lid is super flexible and much easier to remove than traditional paint bucket lids.

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 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

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.

External adjustable digital thermostatic control with LED display (+/1 degree accuracy

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

Saving Energy & Money- Built in insulation foam, reduces heat loss. 4-gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it.

High Quality Built & Elegant Design- Camplux electric water heater has glass-lined tank for long service life and easy to maintain. Elegant streamline design cover, made your kitchen more pretty.

UL Approval Safety - Thermostat Control allows adjustment of water temperature. High Limit device provide protection while overheating.

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

Original Design: Tankless hot water heater's Circ-Logic technology offers recirculation patterns that match your habits; For the latest in non-condensing technology that speeds up service and installation, check out our new RE180iN model

Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: Non-condensing tankless hot water heater from Rinnai is only the size of a small suitcase and fits in a wide variety of spaces, but provides up to 9.8 GPM (6 fixtures at once)

Smart, Durable Design: Includes 12-, 5-, and 1-year residential guarantee and 5-, 5-, and 1-year commercial factory warranty for heat exchanger, labor, and parts, respectively; See Controlr module for WiFi control (not included)

ON/OFF Dial Control with adjustable digital temperature display

Self-modulating power control

11kW Model Flow Rate: up to 2.68 GPM

【INSTANT & SUFFICIENT HOT WATER】 With real powerful 18kW smart heating system, the tankless hot water heater electric ECO180B supplies sufficient instant and endless hot water of 120℉ or higher in seconds, no waiting for preheating nor terrible temp fluctuation during shower time any more and no worry of running out of it. Perfect companion for whole house use, including shower, sink faucets, dishwasher, washing machine, etc.

【SELF MODULATION INSTANT WATER HEATER】The electric on demand tankless hot water heater ECO180B adjusts exact power input based on current flowrate and temp setting. For example, less power will be consumed by the smart water heater when you reduce water flow, thus, you get ideal temperature instead of scalding hot, which ensures comfortable experience and excellent energy efficiency. Also, optimal energy efficiency of 98% saves considerable electric charge for you.

【CONVENIENT USE】The electric tankless water heater 18kW comes with digital display & touch control panel so temp setting is easy job. Best of all, useful information on the screen helps you get full understanding of the working status of the 240v water heater tankless, you needn’t go through hard lesson of temp setting. Now turn on the faucet and let the smart instant hot water heater do the rest.

ON/OFF Dial Control with adjustable digital temperature display

Self-modulating power control

24kW Model Flow Rate: up to 5.9 GPM for RTEX-24

【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.

ON/OFF Dial Control with adjustable digital temperature display

Self-modulating power control

8kW Model Flow Rate: up to 1.95 GPM

【SAFE DURABLE & LONGEVITY】304 Made of stainless steel and never rust，Anti-leakage plug，Multiple safety protection functions protect you from the risk of scald, leakage or other injury.Premium plastic shell is corrosion resistant，This mini hot water heater is ideal for kitchen, bar, school, hospital, community and RV.

【SMART INVERTER FOR ENERGY SAVING】Digital Display，Automatic heat preservation and storage of hot water, 3.0 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. 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.

【EASY TO USE】storage 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.

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

Smart&Considered Design: Small water heater designed with smart touch control & LED display, mini size, perfect for under sink installation. The minimum water flow for activation just need 0.4 GPM (Only for one sink)

Multi-angled Mounting: The compact size instant electric water heater requires a connection of 1* 40A circuit breaker & 8 AWG wire. Install close to outlet for energy saving. Can be mounted Multi-angled, ideal for kitchen, wet bars, school, hospital, hair salon and boats. Please make sure it is the right size for you: 3.5kW at 120V, product dimensions 7.8" x 6.3" x 3.9", water pipes fitting: 1/2" NPT male

Reliable&Durble: The 3.5kW tankless water heater comes with 5 protections. NFS approved, offer lead-free water. ETL safety certified, leakage and overheat protection device to ensure your safety. Stainless steel and copper component for high efficiency and durability

Compact and stylish with digital temperature control in increments of 1f ranging from 80f to 140f

RTEX04 and RTEX06 only show output temperature and are non thermostatically controlled

✅【Tips】 The instant hot water heater does not store water (Water Temperature Range: 35-50℃, Voltage:3000W; AC 110V;Wire Requirements:2.08mm² Copper wire (#14 awg wire); )Trip switch:≥32A(Otherwise it will trip).The outlet water temperature depends on the inlet water temperature and water flow. The larger the water flow, the lower the temperature, the smaller the water flow, the higher the temperature.

✅Quick Heating: You can heat the product without heating. Tankless water heater can keep water out of the water within 24 hours, Energy saving and environmental protection.If the tankless water heater heating water is not hot enough, please reduce the flow rate of water the temperature of the water will increase.

✅Convenient and Small: Tankless water heater can be operated by the remote control and button, and the LED screen displays the temperature in real time. Tankless water heater small and exquisite water heater saves space, installation and disassembly simple. If tankless water heater are leaking, please check whether the product interface is connected right.

Durable, point-of-use hot water solution ideal for a full bathroom nationwide – Sink and Shower combination

3 settings: high 13 kW, medium 8.5 kW, low 4.5 kW

Saves up to 50% on water heating costs vs. a tank water heater

INSTANT HOT WATER HEATER - Applied with 5500W heating system, the electric tankless water heater supplies instant hot water, 3 seconds to get hot water without preheating. Instant consistent and endless hot water of the maximum temperature reach to 55℃/131℉. It is perfect companion for sinks, bringing you perfect experience of comfort and relaxing.

REMOTE CONTROL OR TOUCH SCREEN - Ultra slim and smooth appearance design, beautiful and elegant. The temperature can be adjusted by remote control and touch control, which is more convenient to use, can avoid wet hands to adjust, and is safer; constant temperature water outlet three-level power adjustment, bid farewell to cold and hot

SAVE SPACE AND ENERGY - Compact design, our tankless Hot Water Heater is only the size of a small suitcase, and the wall-mount design frees up valuable floor space within your home. And 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.

Continuous Hot Water – never run out of hot water, even with back-to-back showers

Tankless Gas Water Heaters are cost saving and energy efficient

Reduces Energy Consumption - Automatically adjusts the amount of energy required to heat the water you need

Continuous Hot Water – never run out of hot water, even with back-to-back showers

Tankless Gas Water Heaters are cost saving and energy efficient

Reduces Energy Consumption - Automatically adjusts the amount of energy required to heat the water you need

Warm to hot climates - serves up to 3-4 bathrooms | Cool to cold climates - serves up to 3 bathrooms

Requires a 240-Volt service with four 40 Amp double-pole breakers and four 8/2 AWG wires

35° F Temperature Rise – 7.3 GPM, 45° F Temperature Rise – 5.46 GPM, 55° F Temperature Rise – 4.47 GPM

UNLIMITED HOT WATER ON DEMAND - Tankless electric water heater provides instant, continuous water flow

POINT OF USE - Installs at the point of use, for hot water where you need it

PERFORMANCE UP TO 0.7 GALLONS PER MINUTE (GPM) - Enough to run 1 faucet in multiple climates (*Results are based on 72˚F inlet water temperature and 105˚F outlet water temperature)