10 BEST ELECTRIC ON DEMAND WATER HEATERS for sale in 2025 – compare between the best electric on demand water heaters on sale.

Rank Product Rating
1
Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater with Patented Self Modulating Technology
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115 Reviews
Product Highlights
  • 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.Activation flow 0.3 GPM

$449.70
2
Thermoflow 110V~120V Mini Tankless Water Heater Electric Point of Use On Demand Instant Hot Water Heater for Sinks Wall Mounted, Elex3.5L Plus 3.5kW at 120 Volts
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Product Highlights
  • ➤ TANKLESS - Save up to 60% on your water heating cost with an Thermoflow electric tankless water heater. Eliminating distribution, start-up and technical systems losses as well as circulation and storage losses.
  • ➤ ENDLESS HOT WATER - No need to preheat before using. As soon as you open the tap, the water flows with your desired temperature. High efficient, Energy Saving
  • ➤ COMPACT DESIGN - Super compact designed, even smaller than a shoe box. Wall-mounted design frees up floor space for more storage, easy to install into washbasin and other tight spaces!
  • ➤ EXCEPTIONALITY DURABLE - Instant hot water thanks to rapid and maintenance-free bare wire heating systems. High quality alloy bare heating element has good corrode resistance and acid-resisting, with longer lifespan, instantaneous heating efficiency up to 99%.

$119.99
3
Stiebel Eltron Tankless Water Heater – Tempra 24 Plus – Electric, On Demand Hot Water, Eco, White
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Product Highlights
  • CONTINUOUS FLOW – Advanced Flow Control German patented technology invented by Stiebel Eltron, automatically maintains water temperature for constant comfort. It’ll reduce flow slightly if hot water demand exceeds capacity. Hot showers will never be interrupted again.
  • 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. Eco friendly unit saves energy with auto-modulation and the ability to electronically measure water flow. Savings monitor even shows how much you save on energy costs.
  • EASY OPERATION – Electronic flow sensor switches on the powerful solid copper interior heating system of the water heater. It’s noise free while in use and has a digital temperature display and preset temperature memory buttons.
  • TEMPRA 24 PLUS – This specific model is 24kW, 240V/208V, requires a min. recommended household electric service of 150 A, and offers an output water temperature of 86˚ to 140˚F. Check our guides below to compare features of our various Trend and Plus models, each available in different kW levels.

$591.79 $536.18
4
Rinkmo Electric Tankless Water Heater - 24KW 240V Instant On Demand Residential Electric Hot Water Heater for Bathroom Bathtub Whole House Shower Sink Small
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Product Highlights

$429.00
5
Tankless Water Heater Electric 240V, On Demand Hot Water Heater Digital Display 5.5kW,Electric Instant Hot Water Heater,Overheating Protection, Black
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89 Reviews
Product Highlights
  • INSTANT & SUFFICIENT HOT WATERApplied 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 ADJUSTMENTThe 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 USEThe 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. This Black model does not comes with Remote control, useful for installation under sink.
  • SAFE and DURABLEApplied 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.

$118.99
6
EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
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2,577 Reviews
Product Highlights
  • 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

$277.00 $208.39
7
Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted
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1,235 Reviews
Product Highlights
  • 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)

$149.95
8
Electric Tankless Water Heater, ECOTOUCH 6.5KW 240V On Demand Bathroom Water Heater Self-Modulating Instant Hot Water Heater ECO65 White
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Product Highlights
  • Tankless Water Heater ElectricApplied with 6.5kW heating system, the tankless water heater electric ECO65 supplies instant, sufficient and endless hot water of 110℉ or higher temp in seconds, no waiting for preheating nor terrible temp fluctuation, perfect companion for sink faucets. Time to get rid of those 110V "lukewarm" toys.
  • Smart Self Modulation The on demand water heater electric ECO65 adjusts power input based on flow rate and temp setting in real time. For example, less power will be applied by the smart instant water heater when water flow reduced, thus, you get still ideal temperature instead of scalding hot water, which means comfortable experience. Optimal energy efficiency of 98% saves considerable electric charge.
  • Convenient UseThe electric tankless water heater ECO65 comes with digital display & touch control panel so temp setting is easy job. Now turn on the faucet and let the smart hot water heater electric do the rest, you needn’t go through hard lesson of temp setting by a mixer tap without any hint. Best of all, useful information on the screen helps you get full understanding of working status of the electric tankless water heater.
  • Safe and DurableNewly updated and applied with multiple protection devices, every piece tankless water heater electric ECO65 goes through strict tests to ensure 100% safety. Inner water and electricity lines are designed to run separately so as to avoid leakage risk or scale build up. The on demand hot water heater ECO65 qualifies for ETL standard, you can expect outstanding performance for years to come.

$135.99
9
Instant Electric Tankless Hot Water Heater 110V 3800W Mini Shower Kitchen Bath for Home Kitchen Use
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Product Highlights
  • Lightweight Safety Design: Mini size Approx. 13.5 x 6 x 16.5cm/ 5.31 x 2.36 x 6.59" and lightweight design for your home use. It can bring instant hot water for you at home when washing food or vegetable in kitchen
  • Instant Hot Water:3800W rated power 50Hz frequency can provide you hot water range from 35-45℃ , get instant endless hot water easily , As soon as you turn on the tap,you just need to relax and wait for the hot water to come out
  • Energy Saving:Compact and light weight structure with extraordinary energy saving technology. This electric water heater are designed with advanced combustion technology to decrease gas consumption and burning noise. Save more when using our tankless water heater
  • Safety Protection: Leakage protection, IPX4 waterproof, Dry heating protection, Water-electricity isolation, Auto power-off at inactive state, Over-temperature automatic power-off

$78.00
10
Rheem RTEX-18 18kW 240V Electric Tankless Water Heater, small, Gray
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72 Reviews
Product Highlights
  • External digital thermostatic control with LED display (+/1 degree accuracy)
  • Most advanced self-modulation, adjust power to meet hot water demand
  • Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
  • Simple installation – bottom 3/4 inch NPT water connections

$429.00 $377.00

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