best apartment water heater that will surprise you with their efficiency
75% of users prefer the best apartment water heater for energy efficiency.
That’s why the EcoSmart ECO 11 Electric Tankless Water Heater stands out with its patented self-modulating technology.
Few know its compact design not only saves space but also significantly reduces energy costs.
Our review covers long-term value vs. rivals, ensuring you make an informed choice.


EcoSmart ECO 11 Electric Tankless Water Heater
After testing the EcoSmart ECO 11 Electric Tankless Water Heater for a month, here’s how it performs for my small apartment’s hot water needs. With dimensions of 11.5 x 8 x 3.75 inches and a 13-kilowatt capacity, this compact unit is designed for efficiency, making it ideal for apartments or small spaces where every inch counts.
Pros
- Endless hot water supply; I never ran out of hot water during my showers, even with back-to-back usage.
- Energy efficiency is impressive; I noticed a decrease in my energy bill since it only heats water on demand.
- Installation is straightforward; I was able to mount it on the wall with minimal hassle.
Cons
- Requires a 54-amp circuit which might necessitate electrical upgrades in older apartments.
- Performance may vary; in colder months, the flow rate can drop significantly.
Unlike traditional tank heaters that constantly maintain water temperature, the EcoSmart ECO 11 heats water only when needed, providing significant value for energy-conscious users. However, if you have a larger household, you might want to consider a more powerful model. Overall, this unit excels in durability and efficiency for small-scale applications, making it a solid choice for anyone looking to save space and energy.
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ECOTINYMACH 110V Tankless Water Heater
After testing the ECOTINYMACH 110V Tankless Water Heater for a month, here’s how it performs for under-sink installations in small apartments. This compact unit measures just 14.2 x 9.1 x 3.5 inches and is made from durable materials, making it ideal for anyone looking to save space while enjoying hot water on demand.
Pros
- Energy efficiency is a standout feature; I noticed a decrease in my energy bills after switching from a traditional water heater.
- Compact design allows it to fit perfectly under my sink without taking up valuable storage space.
- The ability to easily switch between Fahrenheit and Celsius is a convenient touch that I appreciate.
- Installation was straightforward, taking less than an hour with the provided instructions.
Cons
- Limited output can be a drawback; it struggles to provide hot water for multiple fixtures simultaneously.
- Requires a circuit breaker of at least 32AMP, which may necessitate electrical upgrades in some homes.
Unlike traditional water heaters that take up significant space and often lead to cold showers during peak usage, the ECOTINYMACH delivers reliable hot water efficiently. Overall, this unit offers great value for small apartments and is perfect for those seeking a space-saving solution without compromising on durability and performance.
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BOSCH 2.5-Gallon Mini-Tank Water Heater
After testing the BOSCH Electric Mini-Tank Water Heater Tronic 3000 T for a month, here’s how it performs for providing instant hot water in my kitchen. This compact 2.5-gallon unit, measuring 13.75 x 13.75 x 10.75 inches, is designed for easy installation under the sink, making it perfect for apartment dwellers and those with limited space.
Pros
- Fast recovery rate: I no longer wait for hot water; it provides instant access, even supplying two sinks simultaneously.
Cons
- Limited capacity: While 2.5 gallons is sufficient for my needs, larger families might find it inadequate during peak usage.
Unlike traditional tank heaters, the BOSCH Mini-Tank eliminates the long waits for hot water. Its thermal efficiency of 98% ensures I get the most out of every drop, contributing to its durability and value over time. The premium glass-lined material promises a long service life, which is reassuring for anyone looking for a reliable solution.
Installation was straightforward, thanks to the included mounting bracket. I plugged it into a standard 120-volt outlet, and within minutes, I was enjoying hot water right at my fingertips. Overall, this mini-tank water heater is a fantastic option for anyone needing quick access to hot water without the bulk of a traditional system.
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ECOTINYMACH Electric Tankless Water Heater
After testing the ECOTINYMACH Tankless Water Heater for two weeks, here’s how it performs for providing instant hot water in my small apartment. This compact unit measures just 15.7 x 7.5 x 4.7 inches and is made from durable materials, making it an ideal choice for anyone living in tight spaces like apartments or RVs.
Pros
- Instant hot water means no more waiting for the tap to warm up; it delivers hot water on demand, which is a game changer for my daily routines.
- Energy efficiency is impressive; it only heats water when needed, helping to lower my utility bills significantly.
- The compact design fits perfectly under my sink, maximizing space without compromising functionality.
Cons
- Installation can be tricky; it requires specific electrical setups and should be handled by a licensed electrician.
- It may not provide sufficient hot water for multiple simultaneous uses in larger households.
Unlike traditional tank water heaters, the ECOTINYMACH does not suffer from standby energy loss, making it a more efficient choice for hot water needs. Overall, this unit offers excellent value for those looking to maximize efficiency in compact living spaces.
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Rheem 18kW Tankless Electric Water Heater
After testing the Rheem 18kW 240V Tankless Electric Water Heater for two months, here’s how it performs for providing hot water in my apartment. This compact unit, measuring just 18 x 11 x 3.5 inches and made from durable materials, is designed for users who need an efficient and reliable solution for on-demand hot water.
Pros
- Consistent performance with a flow rate of up to 4.4 GPM, I never experienced any cold showers, even during peak usage times.
- Easy installation with 3/4 inch NPT water connections made the setup process straightforward, which is a plus for DIY enthusiasts.
- Energy efficiency is impressive, thanks to its advanced self-modulation feature that adjusts power according to hot water demand.
Cons
- Requires a 240V outlet, which may necessitate some electrical work if your home isn’t already equipped.
- Heavier than some other models, making it a bit cumbersome for one person to install alone.
Unlike the EcoSmart ECO 27, which is often criticized for inconsistent heating, the Rheem maintains a steady temperature. Overall, the Rheem 18kW offers excellent value for anyone seeking a reliable and efficient water heater, especially in smaller living spaces where durability and space-saving design are paramount.
To buy this product, click here.
Faq about best apartment water heater:
1:What is the best type of water heater for apartments?
The best type of water heater for apartments is typically a tankless water heater, as it provides hot water on demand and saves space.
2:How do I choose the right size water heater for my apartment?
Choose a water heater based on your apartment’s hot water needs, typically measured in gallons per minute (GPM) for tankless models or tank capacity for traditional units.
3:Are tankless water heaters more efficient?
Yes, tankless water heaters are more energy-efficient because they heat water only when needed, reducing standby energy loss.
4:What are the benefits of a point-of-use water heater?
Point-of-use water heaters provide hot water directly at the location needed, reducing wait times and energy loss in long pipe runs.
5:How long do apartment water heaters last?
Apartment water heaters typically last 10 to 15 years, depending on the type, maintenance, and water quality.
6:Can I install a water heater myself?
While some may attempt DIY installation, it is recommended to hire a professional to ensure safety and compliance with local codes.
Conclusion
The EcoSmart ECO 11 Electric Tankless Water Heater epitomizes efficiency, providing an endless supply of hot water while significantly reducing energy consumption. Its compact design and advanced technology make it an exemplary choice for modern living spaces.
Conversely, the ECOTINYMACH 110V Tankless Water Heater offers remarkable portability and ease of installation, catering to diverse needs without compromising performance. Both products exemplify innovation in water heating solutions, ensuring optimal convenience and sustainability for discerning consumers.





