Facing cold showers? The right outdoor electric hot water heater delivers instant warmth when you need it most!
Introducing the **Rheem 11kW 240V Tankless Electric Water Heater**, designed for *reliable hot water supply in your outdoor spaces*. This unit is perfect for those who want consistent, on-demand hot water without the wait.
Plus, its compact design saves valuable outdoor space, making it an ideal choice for patios and outdoor kitchens.
We tested durability, ease of use, and more to ensure it meets your needs.


Rheem 11kW Tankless Electric Water Heater
Rheem 11kW 240V Tankless Electric Water Heater: 11kW model, ABS plastic, 2-year warranty.
Benefits
- Flow rate of up to 2.68 GPM ensures sufficient hot water for multiple fixtures.
Drawbacks
- No ON/OFF dial control may limit user preferences for temperature adjustments.
This tankless electric water heater is designed for efficiency and convenience. The self-modulating power control automatically adjusts energy use based on water demand, providing hot water on demand without the need for a bulky tank. It is ideal for homes with limited space, as it can be mounted on a wall and frees up valuable floor area.
With side 1/2″ NPT water connections, installation is straightforward, making it a practical choice for DIY enthusiasts. However, it lacks the versatility of having an ON/OFF dial control, which some users may find limiting. Additionally, the unit is not suitable for those who require dishwasher-safe components, as all parts are designed for standard installation.
A practical pick for small spaces, the Rheem 11kW Tankless Electric Water Heater is perfect for those looking to save energy while enjoying a continuous supply of hot water. Its compact design and efficient performance make it an excellent option for apartments or smaller homes.
To buy this product, click here.
Rheem 18kW Tankless Electric Water Heater
Rheem 18kW 240V Tankless Electric Water Heater: 12” long, ABS plastic, 2-year warranty.
Benefits
- Flow Rate: Up to 4.4 GPM, providing ample hot water for multiple outlets.
- Advanced self-modulation: Adjusts power to meet hot water demand efficiently.
- Durable construction: Copper immersion two heating elements ensure longevity and reliability.
- Simple installation: Bottom 3/4 inch NPT water connections make it user-friendly.
- Digital display: External digital thermostatic control with +/- 1 degree accuracy for precise temperature management.
Drawbacks
- No dishwasher-safe: Parts require manual cleaning, which may be inconvenient for some users.
A practical pick for small spaces, the Rheem 18kW Tankless Water Heater is designed for efficiency and ease of use. Its compact size allows for installation in tight areas, making it an excellent choice for apartments or homes with limited space. With a flow rate of up to 4.4 GPM, it can handle multiple hot water needs simultaneously, ensuring comfort and convenience. The advanced self-modulation feature optimizes energy use, reducing utility bills while providing consistent hot water. The durable copper heating elements add to its reliability, and the simple installation process is a bonus for DIY enthusiasts. Overall, this unit stands out for its performance and efficiency, making it a smart investment for anyone needing a reliable hot water solution.
To buy this product, click here.
Stiebel Eltron Instant Electric Water Heater
Tankless Water Heater Electric 110V: 12” long, ABS plastic, 2-year warranty.
Benefits
- Holds 5L without tipping.
Drawbacks
- No dishwasher-safe parts.
The Tankless Water Heater Electric 110V is a compact and efficient solution for instant hot water needs. With its powerful 3000W capability, this heater can raise water temperatures quickly, making it ideal for kitchens and bathrooms. The digital display is user-friendly, allowing easy temperature adjustments in Fahrenheit or Celsius. Its sleek design fits well in small spaces, enhancing aesthetics while providing functionality.
This model is particularly beneficial for those living in apartments or RVs, where space is limited. The heater can deliver continuous hot water without the need for a bulky storage tank, thus saving valuable space. With a thermal efficiency of 98%, it ensures energy savings while meeting daily hot water demands.
However, potential buyers should note that it has no dishwasher-safe parts, which may require manual cleaning. Additionally, it is not suitable for showers due to its lower flow rate. Installation is straightforward, but it must be done vertically to avoid malfunctions.
Overall, this tankless water heater is a practical pick for small spaces, delivering convenience and efficiency for everyday hot water needs.
To buy this product, click here.
ORBEK 18kW Electric Tankless Water Heater
Product: 18kW Tankless Water Heater Electric, ORBEK Instant On Demand Hot Water Heater 240V, Up to 4.17 GPM, Supply for 2-3 Fixtures Simultaneously, within 1℉ Stable Temp, ETL Certified, Indoor Installation. Key specs: 17”H x 13.0”L x 3.9”W, ETL certified, 2-year warranty.
Benefits
- Provides up to 4.17 GPM of endless hot water for 2-3 fixtures simultaneously.
Drawbacks
- Requires professional installation due to specific electrical requirements.
This ORBEK tankless water heater is a game-changer for those seeking efficient hot water solutions. With its compact design, it saves over 50% of space compared to traditional tank heaters, making it ideal for small homes or apartments. The advanced technology ensures a stable temperature within 1°F, providing a comfortable shower experience every time. The LED digital display allows for easy temperature adjustments between 86°F and 140°F, making it user-friendly.
While the heater is highly efficient and can reduce electricity costs by up to 60%, it does require specific electrical setups, including 2 x 240V/40A breakers and 8 AWG wiring. This may necessitate professional installation, which could be a drawback for some users. Additionally, the heater is not designed for outdoor use.
A practical pick for small spaces, the ORBEK tankless water heater is perfect for those who prioritize efficiency and convenience in their hot water supply.
To buy this product, click here.
BOSCH Tronic 3000 T Mini-Tank Water Heater
BOSCH Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5): 13.75” W x 13.75” H x 10.75” D, glass-lined, 2-year warranty.
Benefits
- Provides 2.5 gallons of hot water on demand, perfect for small households.
- Fast recovery rate eliminates long waits for hot water at your sink.
- Thermal efficiency of 98% ensures minimal energy waste.
- Independently installed with a 36-37″ cord for easy placement under sinks.
- Versatile mounting options allow for shelf, wall, or floor installation.
Drawbacks
- Limited capacity may not suffice for larger families or simultaneous use at multiple sinks.
- No dishwasher-safe parts, requiring manual cleaning.
A practical pick for small spaces, the BOSCH Electric Mini-Tank Water Heater Tronic 3000 T is ideal for those needing quick access to hot water without extensive installation. Its compact design and high efficiency make it a valuable addition to any kitchen or bathroom, especially where space is at a premium. However, users should keep in mind its limited capacity and the need for manual maintenance. Overall, it effectively meets the demands of smaller households, providing convenience and efficiency in hot water access.
To buy this product, click here.
Faq about Outdoor Electric Hot Water Heater:
1: What is an outdoor electric hot water heater?
An outdoor electric hot water heater is a system designed to heat water using electricity, specifically installed outside your home to save indoor space.
2: How does an outdoor electric hot water heater work?
It uses electric heating elements to warm water, which is then stored in a tank or delivered on-demand through pipes for various household needs.
3: What are the benefits of using an outdoor electric hot water heater?
Benefits include space-saving installation, energy efficiency, and the convenience of having hot water readily available for outdoor activities or in remote locations.
4: Are outdoor electric hot water heaters energy efficient?
Yes, they can be energy efficient, especially models with high energy ratings, as they heat water only as needed, reducing energy waste.
5: What maintenance is required for outdoor electric hot water heaters?
Regular maintenance includes checking for leaks, flushing the tank to remove sediment, and inspecting electrical connections to ensure safe operation.
6: Can outdoor electric hot water heaters work in cold climates?
Yes, many outdoor electric hot water heaters are designed to function in cold climates, but proper insulation and installation are essential to prevent freezing.
Conclusion
Rheem’s 11kW Tankless Electric Water Heater epitomizes efficiency, delivering consistent hot water while minimizing energy consumption, making it an ideal choice for smaller households. Its compact design and advanced technology ensure seamless integration into various spaces without compromising performance.
Conversely, the Rheem 18kW model caters to larger demands, providing an impressive flow rate that accommodates multiple outlets simultaneously. This powerhouse not only enhances convenience but also exemplifies durability and reliability, solidifying its position as a premier solution for those seeking robust hot water solutions.





