Electric tankless water heaters are becoming increasingly popular for their energy efficiency and space-saving design. In 2025, the market offers a variety of top-rated models that cater to different household needs, ensuring a continuous supply of hot water without the bulk of traditional tanks. These innovative units not only reduce energy costs but also provide instant hot water on demand, making them an ideal choice for modern homes. From compact designs perfect for small spaces to powerful units suitable for larger households, the best electric tankless water heaters are designed to enhance convenience and efficiency.
SALE
−$91.24
EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
- 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.Amperage Draw : 54 A.Special Features: Energy Efficient
- 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.
- 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
$207.76
SALE
−$20.53
Rheem 18kW 240V Tankless Electric Water Heater, Gray
- 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
- Threaded for easy replacement, simple installation, digital temperature display
$428.47
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
- 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
- Bottom 3/4" NPT water connections
- On demand, consistent and continuous hot water
$497.99
SALE
−$289.17
Stiebel Eltron 239223 Tankless Water Heater – Tempra 29 Plus – Electric, On Demand Hot Water, Eco, White, 23
- 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
- Requires 3 separate dedicated 40 amp breakers with 8 gauge copper wiring, and a minimum of 200 amp total service to the residence
$509.83
Tankless Water Heater Electric with Remote, On Demand Under Sink Hot Water Heater Electric 110V with LED Display - Automatic Control System - Fault Self-Test Function (3000W Pure White, Pure White)
- Instant Thermostatic Water Heater - Tankless electric water heater adopts 3000W-5000W heating system, no preheating required, rapid heating in 3 seconds, providing instant hot water. Instant, continuous, endless hot water It is the perfect companion to your sink, giving you the perfect experience of comfort and relaxation.
- Remote Control Water Heater - Instantaneous electric water heater adopts ultra-thin and smooth appearance design, which is beautiful and elegant. The water temperature can be adjusted by remote control and touch, making it more convenient to use. Three-level power adjustment of constant temperature water outlet, say goodbye to hot and cold, the temperature can reach 55℃/131℉.
- Save Space and Energy - Our tankless water heaters are compact and fit easily under your sink, making them perfect for every corner of your home without taking up space. The thermal efficiency of tankless electric water heaters is as high as 99%, allowing you to enjoy hot water at any time and save energy.
- Safety Protection - Our instant electric water heater has been rigorously tested and has multiple protection functions: water and electricity isolation, IPX4 waterproof, leakage protection, dry boil protection, automatic power off under overheating and inactivity. Prevent leakage and water pipe corrosion.
- Easy to Install - The domestic tankless water heater adopts a mini design, which is very convenient to install in the bathroom, kitchen and under the sink, etc. where it is needed in the home. Standard 1/2 connection (in or out) for direct connection to conventional household hose connectors. If you still have questions, please feel free to contact us.
$99.99
Rheem 11kW 240V Tankless Electric Water Heater
- ON/OFF Dial Control with adjustable digital temperature display
- Self-modulating power control
- 11kW Model Flow Rate: up to 2.68 GPM
- Side 1/2" NPT water connections
- On demand, consistent and continuous hot water
$269.00
Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater, GRAY
- 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
- 99.8% energy efficient. External controls to adjust temperature in increments of 1°f. Water-Saver Shower Head – 1.5 GPM
- Threaded for easy replacement, simple installation, digital temperature display 54 A. 13kW Model Flow Rate: up to 3.17 GPM
$282.95
Ranein Electric Tankless Water Heater, 18kW 240V on Demand Instant Endless Water Heater with LED Temperature Display for Residential Whole House Shower, Space Saving
- NOTE: Make sure this water heater tankless is sized for your hot water needs: 18 kW; 240 volts; circuit breaker required 2 x bipolar 40 amps; unit dimensions 13.8" x 3.1" x 18.7"; water connection 3/4" NPT.
- SAVE: Compared to tank-type water heaters, electric tankless water heater don't require preheating. There's no energy consumption when not in use. It saves 60% of heating costs. Additionally, it's more compact and can be installed anywhere.
- POWERFUL: This electric water heater's on-demand thermal efficiency reaches up to 99%. With a flow rate of up to 4.3GPM, it's suitable for 2-3 usage points throughout the house. No waiting for preheating. Provides endless ample hot water.
- SIMPLE: The endless hot water heater electric features knob controls and an LED display. With an adjustment range from 86°F to 131°F in 1°F increments, just simply set the temperature and enjoy stable and ample hot water.
- SAFE: The instant electric tankless water heater is applied with multiple protections, like leakage protection, overheating protection, and drop test, damp proof, every unit electric tankless water heater goes through strict tests to ensure 100% safety and it is listed by CSA.
$329.00
Rheem 8kW 240V Tankless Electric Water Heater
- ON/OFF Dial Control with adjustable digital temperature display
- Self-modulating power control
- 8kW Model Flow Rate: up to 1.95 GPM
- Side 1/2" NPT water connections
- On demand; continous hot water
$223.99
SALE
−$60.00
FOGATTI Tankless Water Heater Electric, Up to 3.3 GPM, 14kW 240V On-Demand Instant Endless Water Heater, ETL Certified, 2-3 Point of Use Hot Water
- Professional Installation Recommended: The tankless water heater electric requires 60AMP two-pole breaker and 1-set of 6 AWG wires to be connected. Be sure to understand the wire usage requirements first
- Endless Hot Water: With a maximum flow rate of 3.3 GPM, FOGATTI 14kW electric tankless water heater provides continuous hot water for up to 2-3 points of use at once, ensuring everyone in your home has access to warm showers and hot water whenever needed
- Compact & Space-Saving: Measuring only 14.2" x 9.5" x 3.5", this sleek and compact water heater fits virtually anywhere, even in tight spaces. The absence of a bulky water tank means you can install it in smaller areas like closets, under sinks, or on walls without taking up valuable room space
- Safe & Reliable: The safety of high-voltage electrical appliances must undergo rigorous testing and certification. FOGATTI have undergone comprehensive safety certification in ETL. The heating elements are isolated from the water to prevent mineral build-up and ensure long-lasting performance
- User-Friendly Design: Featuring intuitive knob controls and an easy-to-read LED display, setting the desired temperature from 86°F to 140°F is simple. Both the inlet and outlet are standard 1/2” NPT male connectors, which are compatible with most house water pipe sizes
$229.99
Last update on 2025-05-02 / Affiliate links / Images from Amazon Product Advertising API