Finding a tankless water heaters electric that suits your need and does its job well can be challenging. Overall, our tester reviews these tankless water heaters electric with giving ratings and marks for its durability, ease of setup and use. Also the tankless water heaters electric price will be fairly matched the product’s performance, plus with the attractive and sturdy design etc that comes with the product. We conducted hands-on testing for tankless water heaters electric and have the details guide and list provided below.
This is the ultimate buyers guide tankless water heaters electric.
A Quick Comparison of Our Favorites
1
Rheem 18kW 240V Tankless Electric Water Heater, Gray
10
Amazon.com
2
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
9.5
Amazon.com
3
Rheem 11kW 240V Tankless Electric Water Heater
9
Amazon.com
4
EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
8.6
Amazon.com
5
Electric Tankless Water Heater WINTEMP 27kW 240V, Whole House Hot Water Supply, On Demand Instant Endless Water Heater, with LED Temperature Display, WiFi...
8.4
Amazon.com
6
ORBEK 18kW Tankless Water Heater Electric 240v - On Demand Water Heater Electric, Max 4.17 GPM, Supply for 2-3 Fixtures, ETL Certified, New Upgraded 2.0...
7.8
Amazon.com
7
14kW Tankless Water Heater Electric, ORBEK On Demand Instant Hot Water Heater 240V, Max 3.38 GPM, Supply for 1-2 Fixtures, ETL Certified, Indoor...
7.6
Amazon.com
8
14kW Tankless Water Heater Electric, SIVUATEK 240V Instant On-Demand Hot Water Heater, 2 Point of Use, Self-Modulating, ETL Certified, Endless Water Supply...
6.9
Amazon.com
9
Tankless Water Heater Electric 110V, 3000W Instant Water Heater Under Sink, On Demand Hot Water Heater Electric with Digital Display, Electric Mini Water...
6
Amazon.com
The Best tankless water heaters electric
Rheem 18kW 240V Tankless Electric Water Heater, Gray
$441.00
in stock
Amazon.com
Features
| Part Number | RTEX-18 |
| Model | RTEX-18 |
| Color | Gray |
| Size | Small |
| Energy Efficiency Class | 99.8% |
- 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
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
$525.00
in stock
Amazon.com
Features
| Part Number | RTEX-24 |
| Model | RTEX-24 |
| Warranty | Limited lifetime warranty |
| Color | Gray |
| Energy Efficiency Class | 99.8% Energy efficient |
- ELECTRICAL REQUIREMENTS: 3 x 40 AMP Double Pole Breakers Required. 200 AMP Household service recommended. Ensure your home can accomodate the power supply and that enough space is available in your breaker panel for this unit. RTEX-24 model is 100A, 24kw, 240V.
- PROVEN PERFORMANCE: Continuous hot water when you need it for the whole home (review performance guide image to confirm this water heater will provide the hot water needed based on geographic location). Ground water temperature impacts temperature rise and gallons per minute.
- EASILY ADJUSTABLE: ON/OFF Dial Control with adjustable digital temperature display allows for adjustments in 1-degree increments from 80-140 degrees F.
- EFFICIENT: Tankless electric water heaters save space, energy, money, and require no venting.
Rheem 11kW 240V Tankless Electric Water Heater
$255.00
$269.00
in stock
Amazon.com
Features
| Part Number | RTEX-11 |
| Model | RTEX-11 |
| Warranty | Limited lifetime warranty |
| Color | Gray |
| Energy Efficiency Class | 99.8% |
- 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
EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
$249.00
out of stock
Amazon.com
Features
| Part Number | ECO 11 |
| Model | ECO 11 |
| Warranty | Lifetime Warranty on electronics, exchanger and element. Warranty only covers cost of heater; does not cover labor or any incidental damages. |
| Color | White |
| Is Adult Product | |
| Size | 12 x 8 x 4 |
- 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
Electric Tankless Water Heater WINTEMP 27kW 240V, Whole House Hot Water Supply, On Demand Instant Endless Water Heater, with LED Temperature Display, WiFi...
$339.98
out of stock
Amazon.com
Features
| Part Number | WN27 |
| Model | WT-WN27K |
| Warranty | 2 Year |
| Color | Gray |
| Size | 27kW |
| Energy Efficiency Class | High Efficiency |
- Important Note: Ensure this tankless water heater meets your installation requirements, 200 Amp Household Service Recommended. The WN27 model is rated at 27KW (240V) with a maximum amperage of 113A. It requires 3 x 40 Amp double-pole (DP) breakers and 3 x 8/2 AWG wiring with ground, with a recommended 250A household power supply. The unit dimensions are 11.1” (W) x 19.1 ” (H) x 4” (D), the water connection is 3/4" NPT, Please consult a qualified electrician before purchasing
- Stable Water Temperature: Automatically adjusts energy consumption based on incoming water temperature and flow rate to ensure maximum efficiency, continuous stable temperature, and optimal power usage. Its maximum hot water output is 6.5 gallons per minute. It is perfect for residential shower use, eliminating the need to wait for preheating. There’s no longer any concern about running out of hot water in the tank, and you won’t experience temperature fluctuations during your shower. Provides continuous hot water for showers and everyday household use
- Energy Saving: Self-modulating technology automatically adjusts power consumption based on real-time water flow and the set temperature. When the water flow decreases, the system reduces power usage, and when not in use, it consumes no energy, achieving up to 99% energy savings. Compared with traditional tank water heaters, it is more energy-efficient and space-saving, Ideal for 2–3 bathroom homes in mild to moderate climate conditions
- Space Saving: The WN27 Compact wall-mounted design that frees up storage space, occupying 90% less space compared to traditional tank water heaters. It is suitable for tight areas and can be easily installed anywhere. It provides an endless supply of hot water in a short time without the need to wait for preheating. Equipped with remote WiFi control, you can adjust the temperature without being near the water heater
- Safe Usage: Safety is always WINTEMP’s top priority. The product features multiple safety protections, including leakage protection, overheat protection, and dry-fire protection, and is ETL certified to fully ensure your safety, allowing you to enjoy hot water anytime, anywhere with peace of mind. We also provide a 2-year return and exchange warranty along with long-term professional technical support to give you worry-free use
ORBEK 18kW Tankless Water Heater Electric 240v - On Demand Water Heater Electric, Max 4.17 GPM, Supply for 2-3 Fixtures, ETL Certified, New Upgraded 2.0...
$265.99
out of stock
Amazon.com
Features
| Model | ET018 |
| Color | Iroy |
| Size | 18kw |
- Note: Things to know before buying, Our Orbek tankless water heater electric 18kw requires 2 x 240V/40A two-pole breakers, 2 sets of 8 AWG wires and 3/4" NPT water connections
- Instant Hot Water Supply: Orbek electric tankless water heater 240v can provides up to 4.17 GPM of on demand endless hot water and ensure comfortable hot water for 2-3 points of use simultaneously
- High Energy Efficiency: This on demand hot water heater electric utilizes water-electricity separation to minimize scale and corrosion. It provides endless hot water in just 3 seconds with an impressive efficiency, potentially reducing electricity costs by up to 60% compared to traditional tank-style heaters
- Comprehensve Security Protection: The tankless hot water heater is ETL certified and packed with advanced safety features, including leakage protection, over-temperature protection, dry-heating protection and lighting resistance etc. Each product undergoes rigorous testing before leaving the factory to ensure its safety and normal operation
- Stable Temperature Control: The built-in chip adjusts heating power 20,000 times per second, keeping water temperature stable within 1°F for a comfortable shower experience
- LED Digital Display: Our tankless electric water heater features a high-definition screen with soft lighting for easy temperature adjustments between 86°F and 140°F. It also displays real-time temperature changes
- Easy Install: With a compact size of 17"H x 13.0"L x 3.9"W, our electric hot water heater saves over 50% of space compared to traditional tank water heaters, fitting easily into most corners of your home. We have also made structural improvements to the product to make installation easier
- After-Sale Service: We provide long-term return & exchange services along with professional technical consulting support
14kW Tankless Water Heater Electric, ORBEK On Demand Instant Hot Water Heater 240V, Max 3.38 GPM, Supply for 1-2 Fixtures, ETL Certified, Indoor...
$189.99
$229.97
in stock
Amazon.com
Features
| Model | 14kW 2.0 Model |
| Warranty | At Least One Year Warranty for the Whole Machine |
| Color | Pearl |
| Size | 14kw |
- Note: Please ensure the household circuit breaker panel has a total current capacity of at least 150 amps. Our Orbek tankless water heater electric 14kw requires a 240V/60AMP two-pole breaker, 1 set of 6 AWG wires and 1/2" NPT water connections.
- Instant Hot Water Supply: Orbek electric tankless water heater 240v can provides max 3.38 GPM of on demand endless hot water and ensure comfortable hot water for 2-3 points of use
- Experience High Efficiency & Cost Savings: Our on demand hot water heater electric delivers endless hot water in just 3 seconds and uses up to 60% less electricity than traditional tank heaters. Its advanced water-electricity separation technology minimizes scale and corrosion, ensuring lasting performance. Save energy and enjoy reliable, instant hot water.
- Certified Safety & Advanced Protection: This tankless hot water heater is ETL certified and engineered for your peace of mind. It features comprehensive safety systems including leakage, over-temperature, and dry-heating protection, along with lightning resistance. Every unit undergoes rigorous factory testing to ensure safe, reliable, and normal operation in your home.
- Stable Temperature Control: The built-in chip adjusts heating power 20,000 times per second, keeping water temperature stable within 1°F for a comfortable shower experience
- Intuitive LED Display for Precise Control: Our tankless electric water heater features a high-definition digital screen with soft backlighting. Easily set your preferred temperature between 86°F and 140°F and monitor real-time temperature changes at a glance for effortless and precise hot water management.
- Space-Saving & Easy Installation: This electric hot water heater features a compact design (14.2"H x 9.5"L x 3.1"W), saving over 50% of space compared to traditional tank heaters to fit easily in tight corners. Its structurally optimized build makes setup straightforward and hassle-free.
- After-Sale Service: We provide long-term return & exchange services along with professional technical consulting support
14kW Tankless Water Heater Electric, SIVUATEK 240V Instant On-Demand Hot Water Heater, 2 Point of Use, Self-Modulating, ETL Certified, Endless Water Supply...
$208.99
$219.99
PRIMEPRIME
in stock
Amazon.com
Features
| Model | TSB-140 |
| Color | Gray |
| Energy Efficiency Class | High Efficiency |
- 【PLEASE NOTE BEFORE PURCHASE】Ensure this 14kW 240V tankless electric water heater meets your hot water demand. Requires 1 x 60-amp circuit breaker. Unit dimensions: 15.87"x11.14"x2.87"; standard 1/2" NPT water connection. No need to disassemble the housing for wiring, making installation faster and more convenient.
- 【ENERGY-SAVING & EFFICIENT】Eliminate standby energy loss with our electric tankless water heater —no preheating, zero idle power use. Reduce your water heating costs by up to 60% compared to traditional models. Compact and space-saving, it installs flexibly under-sink or on-wall.
- 【INSTANT & POWERFUL HOT WATER】With 14kW of heating power and up to 99% thermal efficiency, this unit delivers endless hot water instantly—perfect for 1–2 simultaneous usage points such as kitchen and bathroom. No more waiting, just steady hot water when you need it.
- 【SMART TEMPERATURE CONTROL】Equipped with an intuitive LED display you can easily set the desired water temperature from 86°F to 131°F in precise 1°F increments. Once set, the system maintains a stable temperature output even with water pressure fluctuations.
- 【SAFE & RELIABLE OPERATION】Built with advanced water-electricity separation technology to prevent scale buildup and extend lifespan. Safety features include leakage protection, overheating protection, and auto shut-off, giving you peace of mind during every use.
Tankless Water Heater Electric 110V, 3000W Instant Water Heater Under Sink, On Demand Hot Water Heater Electric with Digital Display, Electric Mini Water...
$59.68
out of stock
Amazon.com
Features
| Part Number | RIV001 |
| Model | Water Heater Electric |
| Color | Germicidal bactericidal sanitize |
- ✔ MINI INSTANT HOT WATER HEATER - This 110 volt water heater is equipped with state-of-the-art technology, with 3000W power, LED display. The electric tankless water heater 110v can raise the water by 82° F (28°C) (0.3GPM) -131° F( 55 °C) (0.5GPM) in 3-5 seconds, saying goodbye to long waiting times for hot water. The tankless electric water heater can set Fahrenheit or Celsius degrees by holding a power button for 6 seconds.
- ✔ SAFETY INTELLIGENCE RELIABLE - This under sink water heater has multiple protection functions. IPX4 waterproof, leakage protection, dry-burning protection, automatic power-off in over-temperature and inactive states. Tankless hot water heater electric can meet your outlet temperature requirement. Large water flow means low temperature and small water flow means high temperature. TIP: Install vertically to avoid malfunction of the heating elements (E2).
- ✔ LIGHTWEIGHT PORTABLE DESIGN - This small water heater compact design, is suitable for installation in the bathroom, kitchen under the sink, etc. The on demand water heater adopts a wall-mounted design, freeing up valuable space for your home, enjoy hot water at any time. This instant hot water heater under sink qualifies for ETL standard, you can expect the outstanding performance of this point of use water heater in the coming years.
- ✔ EASY TO INSTALL AND APPLICATION - This under sink instant water heater comes with premade fixing screw holes, an English manual, and 1/2 inch NPT standard interface. This small electric water heater is ideal for spaces such as kitchens, apartments, bathrooms, RVs, and camping. The comfortable water temperature generated by this 110V water heater is suitable for cleaning food, bowls, clothes, face, hands, etc.
- ✔ QUALITY WARRANTY & IMPORTANT NOTE - We provide a 24-month warranty for the electric water heater tankless. If you encounter any after-sales issues regarding the small hot water heater, you can always contact our electric tankless water heaters support team. Tip: This electric hot water heater is recommended to be connected with wires with a cross-sectional area of ≥ 2.5 square millimeters, and connected to trip switches of over 32a for use.
The Video Review of Best tankless water heaters electric
The Verdict
Our best overall tankless water heaters electric, the Perception and the reviews helps assist to choose you the product better. We hope our reviews buyer guide of these tankless water heaters electric will help you pick the perfect tankless water heaters electric for you and your buying decision making.