A tankless water heater is a great investment for any home. Not only do they save space, but they are also more energy-efficient than traditional water heaters. Tankless water heaters heat water on demand, so you only use energy when you need it.

This guide will provide an overview of the 7 best electric tankless water heaters on the market.

1. Rheem Prestige 9.5 GPM Electric Tankless Water Heater

This heater is perfect for larger homes with 3-4 bathrooms. It can support up to 5 fixtures using hot water at one time and features a self-diagnostic modulating control panel that makes installation and maintenance easy.

Rheem Prestige Tankless Water Heater
This tankless water heater provides hot water on-demand, without the wait - or the waste. The space-saving design is perfect for indoor use only.

This nifty little heater meets the requirements for a number of utility company rebate programs. The accompanying remote digital thermostat can be placed in any easily accessible area of your home, providing you with easy temperature control and monitoring.

2. ECO 27 Ecosmart Electric Tankless Water Heater

If you need to provide hot water for 2-3 bathrooms or up to 4 fixtures at the same time, this is the perfect unit. Made out of self-modulating stainless steel, it will adjust according to how much power is needed to generate hot water.

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ECO 27 Ecosmart Electric Tankless Water Heater
The ECO 27 is the smallest in the EcoSmart electric tankless water heater family. It comes with a stainless steel, insulated cabinet that helps it maintain consistent temperature control while reducing noise levels.

The EcoSmart tankless electric water heater is a much smaller device than traditional tank heaters; installation is possible on a wall or right at the point of use. The Eco 27 has an automatic switch that rapidly ignites the burner when incoming cool water needs to be heated as it passes through a heat exchanger.

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3. Stiebel Eltron Tempra Plus 36 kW Electric Tankless Water Heater

This heater is one of the strongest on the market and can deliver hot water to 8 fixtures all at once. Its advanced flow control feature provides a steady stream of hot water, even when multiple taps are being used.

Stiebel Eltron Tankless Heater
The Stiebel Eltron Tankless Water Heater features exclusive Advanced Flow Control German patented technology invented by Stiebel Eltron to automatically maintain water temperature for constant comfort.

If you have a Stiebel Eltron Tempra®, your demand for hot water will always be met without any interruption – even if multiple people take long showers one after the other. The Tempra Plus® easily modulates the output temperature to a constant level and quietly provides all its hot water.

4. Bosch 3000T Tronic Electric Tankless Water Heater

If you’re looking for a reliable and sturdy water heater that doesn’t take up too much space, this Electric Tankless Water Heater is the one for you.

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Bosch Electric Mini-Tank Water Heater
This 7-gallon capacity point-of-use mini tank fits right under your sink to provide a practical and effective solution to your hot water needs.

With its digital temperature control system, it can maintain +/-1 degree accuracy to make sure you always have access to hot water on demand.

The small size of this tank heater makes it perfect for cramped spaces like apartments. You can also affix it directly to the point-of-use so that you always have access to hot water on demand. With its digital temperature control system, it provides precise temperature control and quick heating that is perfect for everyday use.

5. Takagi T-KJr2-IN-LP Indoor Low NOx Tankless Water Heater

This heater is perfect for small homes or apartments and can provide hot water for up to 2 fixtures at once.

Takagi NOx Tankless Water Heater
This space-saving and energy-efficient unit provides on-demand hot water for all of your needs. Integrated controls and power cord are included as standard features.

It comes with an ultra-low NOx burner that meets strict environmental standards and has a corrosion-resistant copper heat exchanger that provides long-lasting performance.

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The T-KJr2 is a gas-fired, tankless water heater that is fully modulating and perfect for residential applications. In warmer climates, the T-KJr2 can efficiently provide enough hot water to meet the needs of two bathrooms.

6. Rinnai V65EP 6 GPM Outdoor Low NOx Tankless Water Heater

This heater is perfect for larger homes or commercial applications and can provide hot water for up to 12 fixtures at once. It features an output temperature range of 140°F – 185°F and comes with an outdoor installation kit that includes a weatherproof power cord cover.

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Rinnai Natural Gas Tankless Water Heater
The Rinnai V65eN is a non-condensing natural gas tankless water heater that's small in size but big on performance. It can feed up to 5 water fixtures at a go and is designed for durability with enhanced scale detection.

The V65eP propane gas tankless water heater from Rinnai is an ideal combination of efficiency, comfort, and value. It’s perfect for small to medium homes or remodels and installation is easy. Plus, it’s compact, reliable, and perfect for outdoor locations.

7. Camplux Constant Propane Water Heater

This tankless water heater is a great option for anyone looking for a high-quality, water heater that lasts long and won’t break the bank. It features advanced electronic controls and gas controls that provide precise temperature control and lets you set the temperature range that works best for your needs.

Camplux Constant Propane Water Heater
The compact size of this tankless hot water heater saves more space than traditional tanks. It also has a trendy and modern design with unique black glassy front panel..

Camplux tankless propane water heater is designed in a compact size, is easy to install, it can be mounted on walls or ceilings.

With its advanced electronic controls and gas controls, it provides precise temperature control and quick heating that is perfect for everyday use.

What is the downside of an electric tankless water heater?

If you require more hot water than your tankless unit can generate at one time – like if you’re in the shower, running the dishwasher, and washing machine simultaneously – the water temperature may fluctuate as your heater tries to keep up.

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It is worth noting as well that electric tankless heaters are typically more expensive than traditional tank models and require a special electrical connection. Therefore, they may not always be the best option for large or multi-family homes with high demand for hot water.

However, if you’re looking for consistent, reliable hot water flow for smaller homes or apartments, a tankless water heater may be the perfect solution. Its compact size and energy efficiency can help save money on your monthly utility bills, while its high-quality design ensures that you’ll never have to worry about running out of hot water again.

Final Thoughts

Investing in a tankless water heater is a smart move for any homeowner looking to save space and energy while still enjoying plenty of hot water on demand. With so many different brands and models on the market, it can be difficult to know which one is right for you.

This guide has highlighted some of the best electric tankless water heaters available today, making it easier to find the perfect match for your home. Whether you’re looking for a powerful unit that can handle multiple fixtures at once or a smaller model that is ideal for smaller homes and apartments, there is sure to be an option that fits your needs.

About the author

I started working as a quality control manager with the Water Authority of Nassau County in 2005. After a few years, I moved into Water Waste Prevention, where I currently work as the production supervisor. I love my job and the people I work with, but most of all I love spending time with my family.