small tankless water heater

Best Small Tankless Water Heater

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Warm water is a necessity in many homes – from providing hot water for showers to water for washing the dishes. In the past, the only options available were the cumbersome tank heaters, leaving those with small kitchens with no options. However, things have changed and now you can find small tankless water heater. Since there are plenty of options to choose from, it can be overwhelming to choose the right one, but we’re here to help.

After analyzing tens of brands, a few stood out. Read on to see our standout small tankless water heater options in 2023.

Space Saving Water Heaters Comparison

EcoSmart ECO 11 Electric Tankless Water Heater
  • Dimensions: ‎3.75 x 8 x 11.5 inches
  • Capacity: ‎2 Gallons
  • Wattage: ‎13000 watts
  • Stiebel Eltron Tankless Water Heater
  • Dimensions: ‎‎4.63 x 16.63 x 14.5 inches
  • Capacity: ‎N/A
  • Wattage: ‎18000 watts
  • Rheem RTEX-18 Electric Tankless Water Heater
  • Dimensions: ‎‎‎18.5 x 14.5 x 3.5 inches
  • Capacity: ‎N/A
  • Wattage: ‎N/A
  • Bosch Electric Mini-Tank Water Heater
  • Dimensions: ‎‎‎13.75 x 10.75 x 13.75 inches
  • Capacity: ‎‎2.5 Gallon
  • Wattage: ‎1440 watts
  • Eemax EEM24018 Tankless Water Heater
  • Dimensions: ‎‎‎‎17 x 14 x 3.75 inches
  • Capacity: ‎N/A
  • Wattage: ‎N/A

  • How to Buy the Best Small Tankless Water Heater

    Before you purchase a small tankless water heater, here are a few considerations to keep in mind:

    • Fuel source. In most homes, water heaters are fueled by gas or electricity. However, gas water heaters, although quite pricier than their electric counterparts, have lower running cost. On the other hand, electric-powered water heaters, are pricier, but the best for those with small kitchens.
    • Gallons per minute rating. This is the rate at which the heater delivers warm water. A tank with 1.5GPM can supply sufficient water for shower and sink usage simultaneously. For people with larger family, go for space saving water heaters with higher GPM.
    • Ease of installation. Make sure installation process for the water heater you intend to use is easy to install.
    • Size. Since you want an electric water heater that doesn’t occupy a lot of space, go for a tankless version.
    • Durability. Here, look for fire safeguards and robust construction.
    • Warranty. Considering that you’ll be using your water heater for a long time, you need to go for one with a longer warranty period so you can be covered when it comes to repairs and parts replacement.

    With that in mind, you’re now in a better position to choose the right space saving water heater for your home.

    EcoSmart Tankless Water Heater ECO 11

    • Heats water consistently.
    • Saves on space.
    • It’s energy saving.
    • Provides between 1.3 to 3.1 GPM depending on the water temperature in the your pipes.
    • EcoSmart offers a lifetime warranty on this product.
    • Proven.
    • Requires some technical installation.
    • Has low GPM.

    EcoSmart brand is known to make unique appliances that has the touch of modern technology. The EcoSmart Tankless Water Heater comes in various sizes that provides a wide array of GPMs.

    In addition, it has an unlimited warranty thereby proving that the company has faith in this product. Therefore, you can rest assured that any repairs or replacement needed will be sorted. 

    The good thing about this aesthetically-appealing water heater is that it has a space-saving design and thus can fit neatly in any area of your home.

    It has a 1.5GPM, which certainly suits small homes such an apartment. Unfortunately, this makes it an unsuitable option for a larger family.

    Stiebel Eltron Tankless Water Heater

    • Has high flow rate.
    • Features a thin design.
    • Advanced flow control to help maintain water temperature of different appliances.
    • Easy to operate.
    • 7-year leakage warranty.
    • It’s pretty expensive.

    Stiebel Eltron tankless water heater is also a decent option for those who are looking for a tankless water heater that can serve a larger family. The unit is backed by a three-year warranty on parts and 7-year warranty for leakage.

    Another outstanding feature of this unit is that it functions in silence, which means you won’t have to deal with noise in the kitchen.

    In addition, it has a generous five GPM, which means it can serve three showers simultaneously making it suitable for a big family.

    Although not the smallest on our list, has a thin design and thus won’t take up a lot of space in your house.

    The advanced flow control is another nifty feature that enable this unit to maintain the temperature of the water appliance. With this feature, you get constant GPM even when there’s water coming out of taps concurrently.

    Rheem Tankless Water Heater RTEX-18

    • Modern design with external digital thermostatic control.
    • Durable copper immersions for longevity.
    • Simple installation process.
    • Easy to find replacement parts.
    • High GPM making it ideal for a bigger home.
    • 360-degree installation.
    • Short warranty period.
    • Quite pricey.

    For people who want a modernized water heater that’s also durable, the Rheem tankless water heater is an option you can consider. With easy to repair and replaceable parts, this water heater offers good value for your money.

    It has a 360-degrees installation, meaning that it can fit virtually everywhere. It’s very easy to install and its thin exteriors improves the possibilities of installations.

    The unit has high GPM of up to 4.4, making it perfect for a house with two or more showers. Its high GPM makes them ideal for bigger homes where multiple appliances are often used simultaneously.

    In addition to having replaceable parts, the interior of Rheem water heater is made of brass and copper. This help to increase durability.

    Bosch Electric Mini Tank Water Heater

    • Easy installation process.
    • Premium construction.
    • Everything needed for installation is included.
    • Restrictive due to its point-of-use design.

    Bosch is a renowned brand and this electric mini tank is among its most convenient models. Being a point-of-use tank means that you can install this equipment under your sink.

    This mini-tank can serve two sinks simultaneously. It has a 98% thermal efficiency rating, thereby guaranteeing satisfaction. Not only is this device easy to set up, but also more durable than many in its category thereby giving you good value for your money.

    You can do the installation work yourself without the help of a plumber.

    Eemax Tankless Water Heater EEM24018

    • Aesthetically-appealing exterior.
    • Decent GPM.
    • Durable and thus will serve you for years.
    • Short warranty period.

    The Eemax Tankless Water Heater has a shiny, aesthetically-pleasing design and thus will add some spark in your kitchen. With a commendable GPM of 3.5, this tankless water heater suits a big family with multiple appliances. 

    As per Eemax description, this unit can supply water to one shower and two sink during winter or four showers during summer. This is a great option for a home with different water appliances such as a washing machine and dishwasher.

    All these small tankless water heaters have garnered a massive number of positive reviews, making them a good choice. Get one for your hot water needs.