For homeowners, the best tankless water heater ensures endless hot water without high energy bills.
The best tankless water heater delivers efficiency and convenience, with options like the Rheem 18kW 240V Tankless Electric Water Heater and the EcoSmart ECO 11 for reliable performance. These models cater to various household needs, making them ideal for small families and larger households alike.
From compact installations to high-capacity systems, these heaters adapt to any space and demand. They provide consistent hot water while saving energy, proving their versatility.
We detail pros, cons, and hidden perks ahead.
Rheem 18kW Tankless Electric Water Heater
The adjustable valve sets the Rheem 18kW 240V Tankless Electric Water Heater apart from its competitors. This feature allows users to fine-tune the water temperature with precision, ensuring optimal performance for various applications. Constructed from durable materials, it includes copper immersion heating elements that are field serviceable, promoting longevity and ease of maintenance. With dimensions that facilitate a compact installation, it features bottom 3/4 inch NPT water connections for straightforward setup.
Key Advantages
- Self-modulation technology adjusts power based on hot water demand, enhancing energy efficiency and reducing utility bills.
- Flow rate of up to 4.4 GPM provides ample hot water for multiple fixtures, making it ideal for larger households.
- Digital thermostatic control with LED display ensures accurate temperature settings within +/- 1 degree, providing peace of mind.
Limitations
- Not compatible with certain plumbing systems, which may require additional adapters or modifications during installation.
Best for outdoor enthusiasts needing a reliable and efficient hot water solution, the Rheem 18kW 240V Tankless Electric Water Heater excels in performance and convenience, making it a top choice in the market for tankless water heaters.
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EcoSmart ECO 11 Electric Tankless Water Heater
The EcoSmart ECO 11 Electric Tankless Water Heater stands out with its patented self-modulating technology, ensuring endless hot water on demand. Constructed from high-quality materials, it measures 11.5 x 8 x 3.75 inches, making it 90% smaller than traditional tank heaters. This compact design allows for wall installation or placement at the point of use, optimizing space in any setting.
Key Advantages
- The use of 316-grade stainless steel components resists corrosion, enhancing durability.
- With an amperage draw of 54 A, this unit provides consistent performance within 1 degree of the selected temperature.
- It boasts 99% thermal energy efficiency, heating water only when needed, which significantly reduces energy costs compared to traditional tank systems.
Limitations
- Not compatible with high-demand applications, as it provides between 1.3 and 3.1 gallons-per-minute depending on inlet water temperature.
Overall, the EcoSmart ECO 11 is best for outdoor enthusiasts and small-scale applications such as bathrooms, small sinks, and office breakrooms, where efficient, on-demand hot water is essential. Its innovative features and compact size make it an excellent choice for those looking to save space and energy without sacrificing performance.
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Rheem RTEX-24 Electric Tankless Water Heater
The adjustable valve sets the Rheem RTEX-24 apart from conventional water heaters, offering precise control over water temperature. This unit is constructed from durable materials, featuring a sleek gray finish, and dimensions of 18 x 14 x 4 inches, making it a compact solution for any home.
Key Advantages
- The 316-grade stainless steel heating elements resist corrosion, ensuring longevity and reliability.
- With a power requirement of 3 x 40 AMP double pole breakers and a recommended 200 AMP household service, the RTEX-24 delivers consistent performance.
- Its ON/OFF dial control with an adjustable digital temperature display allows for precise adjustments in 1-degree increments from 80-140 degrees F, catering to individual preferences.
- This tankless electric water heater is efficient, saving space and energy while eliminating the need for venting.
Limitations
- The unit is not compatible with traditional tank systems, requiring a complete switch for those upgrading from older models.
- Installation may necessitate professional assistance due to electrical requirements.
Best for outdoor enthusiasts needing consistent hot water supply for various activities, the Rheem RTEX-24 is an excellent choice for those looking to optimize their energy use while enjoying the convenience of on-demand hot water.
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Rinnai RX199iN Tankless Water Heater
The adjustable valve sets the Rinnai RX199iN Condensing Smart Sense Tankless Water Heater apart from competitors. Designed for both indoor and outdoor installation, this unit operates on either natural gas or propane. It boasts dimensions of 14.5 x 18.5 x 29 inches and is constructed from 316-grade stainless steel, ensuring durability and resistance to corrosion.
Key Advantages
- The unit provides an impressive flow rate of up to 11.1 GPM, accommodating multiple fixtures simultaneously, making it ideal for larger households.
- Its super-high energy efficiency factor of UEF .98 translates to significant savings on energy bills.
- The Quick Flush feature simplifies maintenance, prolonging the unit’s lifespan and performance.
- WiFi control capability through the Controlr module (sold separately) allows for remote management of settings.
Limitations
- Not compatible with older plumbing systems, which may require additional modifications.
- Professional installation is highly recommended, as DIY installation may void the warranty.
Best for outdoor enthusiasts needing a reliable and efficient hot water solution, the Rinnai RX199iN is a top-tier choice for those looking to upgrade their water heating system without sacrificing space or performance.
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ORBEK 14kW Electric Tankless Water Heater
The adjustable valve sets the ORBEK 14kW Tankless Water Heater apart from its competitors. Designed for 240-volt systems, this unit has dimensions of 14.2″H x 9.5″L x 3.1″W, making it compact enough to fit in tight spaces. Constructed from 316-grade stainless steel, it resists corrosion and ensures durability in various environments.
Key Advantages
- With a flow rate of up to 3.38 GPM, it provides instant hot water for 2-3 points of use simultaneously, making it ideal for households with multiple hot water needs.
Limitations
- Not compatible with standard 120V outlets, requiring specific electrical setups for installation.
Best for outdoor enthusiasts needing efficient and reliable hot water solutions, the ORBEK tankless water heater offers high energy efficiency, potentially reducing electricity costs by up to 60% compared to traditional tank-style heaters. Its advanced safety features, including leakage and over-temperature protection, ensure peace of mind during operation. The built-in chip adjusts heating power 20,000 times per second, providing stable temperature control within 1°F, enhancing the overall user experience. The LED digital display allows for easy temperature adjustments between 86°F and 140°F, ensuring convenience. Overall, the ORBEK 14kW Tankless Water Heater is a robust option for those seeking an efficient and space-saving hot water solution.
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Faq about best tankless water heater:
1:What is a tankless water heater?
A tankless water heater heats water on demand, providing a continuous supply without the need for a storage tank.
2:What are the benefits of a tankless water heater?
Benefits include energy efficiency, space-saving design, endless hot water supply, and longer lifespan compared to traditional heaters.
3:How do I choose the best tankless water heater?
Consider factors like flow rate, energy source (gas or electric), energy efficiency ratings, and installation requirements.
4:Are tankless water heaters energy efficient?
Yes, they are more energy efficient than traditional heaters as they only heat water when needed, reducing energy waste.
5:What is the average lifespan of a tankless water heater?
The average lifespan is 15 to 20 years, often longer than traditional water heaters.
6:Can I install a tankless water heater myself?
While some may attempt DIY installation, professional installation is recommended for safety and compliance with local codes.
7:Do tankless water heaters require maintenance?
Yes, regular maintenance, including descaling, is necessary to ensure optimal performance and longevity.
Conclusion
Rheem 18kW Tankless Electric Water Heater exemplifies reliability and efficiency, providing instantaneous hot water while optimizing energy consumption. Its advanced technology ensures a consistent supply, catering to diverse household needs.
Conversely, EcoSmart ECO 11 Electric Tankless Water Heater distinguishes itself with compact design and cost-effectiveness, making it ideal for smaller spaces. Its innovative heating elements deliver remarkable performance, enhancing user satisfaction while promoting sustainability.