A small tankless water heater is what you need? Let’s explore the realm of affordable and durable models in this review.
Tankless water heaters have become a nice feature in modern homes. Apart from their energy-efficiency, their small sizes and ease of use are attracting more buyers.
Are you looking for a new good small tankless water heater for your home? Take a look at these sleek models below.
Top 6 Small Tankless Water Heaters For Home Use
- Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater – Best Overall
- EcoSmart ECO 11 Electric Tankless Water Heater – Most efficient
- ECOTOUCH Electric Tankless Water Heater – Smart Design
- Marey ECO150 220V/240V-14.6kW Tankless Water Heater – Easy Management
- Kbxstart Electric Tankless Hot Water Heater – Budget-friendly option
- Titan SCR2 N-120 Electric Tankless Water Heater – Best for warmer weather areas
Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater – Best Overall
- Small and lightweight
- Energy efficient
- Easy to install
- Easy to replace heating elements
- Not ideal for cold areas
First thing first, it is energy efficient. Rheem includes a water-saver showerhead and 1.5 GPM output, which reduces the electric burden at the end of each month. The unit is small and compact, so it won’t eat up space for installation.
This model requires minimum experience to install and less attention to maintain. It is easy to find heating replacements if you need to fix anything.
Tankless water heaters like Rheem 240V Heating Chamber don’t like cold weather because it makes heating water harder.
|Required breaker(s)||60 amp breaker|
|Min. required wire size & number of runs||Number 6 cable / 2 showers|
|Min. flow to activate unit||0.3 GPM|
|Output water temp. range||80°F to 140°F|
|Dimensions||4 x 9 x 13 inches|
|Highlight Features||External adjustable digital thermostatic control with LED display (+/1 degree accuracy, durable Copper immersion two heating elements|
Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater is a best-overall unit. From installation to use, it provides an economical option for hot water.
EcoSmart ECO 11 Electric Tankless Water Heater – Most efficient
- Lifetime warranty
- Energy efficient
- Easy to maintain
The sleek and smart design adds value to your bathroom. With the small size, wall-mounted design, the ECO 11 is a perfect option for a small bathroom and RVs. Featuring advanced technology to calculate the amount of water needed, you won’t have to worry about the electricity bill at the end of the month.
It can accommodate one to two points of use, depending on the capacity and local temperature.
|Max Amperage||57 AMPS|
|Required breaker(s)||60 DP|
|Min. required wire size & number of runs||6 AWG|
|Min. flow to activate unit||0.25 (gpm)|
|Output water temp. range||80°F – 140°F|
|Dimensions||11.5 x 8 x 3.75 inches|
|Highlight Features||Patented Self Modulating Technology and design, 99.8-percent energy-efficient, cut down on heat loss, saving you up to 50% in water heating costs, space-saving.|
EcoSmart ECO 11 Electric Tankless Water Heater is your best companion when it comes to hot water and energy-efficiency. A must-have item!
ECOTOUCH Electric Tankless Water Heater – Smart Design
- Easy to install
- Easy to use
- Multiple safety protections
- Quickly heats water
- Excellent built
- Smart design
- Hot water pressure drops quickly in use.
It offers endless hot water at the desired temperature. The flow rate is roughly 1 to 1.5 gallon per minute. The unit wastes no time to heat the water, giving you install hot water. It is small, suitable for both bathroom and sink use.
The digital display makes it easier to operate. The overall construction is excellent and durable.
What makes me disappointed is the hot water pressure drops quickly after a while.
|Max Amperage||30 AMPS|
|Required breaker(s)||30 DP|
|Min. required wire size & number of runs||12 AWG / 1|
|Min. flow to activate unit||0.475 GPM|
|Output water temp. range||67℉ to 109℉|
|Dimensions||11″ x 7.5″ x 2.35″|
|Highlight Features||Adjusts power input based on flow rate and temp setting in real-time, easy to use digital display & touch control panel, approval by ETL and qualifies for UL.|
Looking for a heating unit to brighten up your bathroom? ECOTOUCH Electric Tankless Water Heater with a sleek design and smart operation is a great catch for you.
Marey ECO150 220V/240V-14.6kW Tankless Water Heater – Easy Management
- Advanced technology
- Works with low pressure
- Multiple points of use
- 100% non-corrosive
- Digital panel for ease of management
- ETL approved
- Require professional installation
This small heater is ideally compatible with 2 points of use. You can set your desired temperature with the LCD panel. It heats water at the flow rate of 2.5 GPM. The water comes fast and continuous.
Marey ECO150 is certainly energy-efficient. With 98% efficient, it can provide hot water without increasing energy consumption. The unit is suitable for both hot and cold regions.
When installing it, Marey recommends professional help.
|Max Amperage||60.8 amp|
|Required breaker(s)||70A Double Pole Breaker|
|Min. required wire size & number of runs||6 AWG / multiple|
|Min. flow to activate unit||0.53 GPM/ 2L/min|
|Dimensions||8.7 x 3.5 x 14.2 inches|
|Highlight Features||ETL approved, easy management and simple adjustments on an LCD panel, flow switch activation mechanism|
Marey ECO150 220V/240V-14.6kW Tankless Water Heater is a small, durable and effective product. It brings a better deal and luxury to your house.
Kbxstart Electric Tankless Hot Water Heater – Budget-friendly option
- Quickly heat (3 seconds)
- Safety protections included
- Comes with different colors
- Multi-function mode
- Super small
- Great for RV
- Hot water isn’t continuous
The unit requires only 3 seconds to heat water. It can be installed in the kitchen for dishwashing or in the bathroom for showering. The LCD digital display shows you the current temperature. When it gets too hot you can adjust the water flow.
The design is lovely and it comes with 3 different colors. Any drawbacks? The hot water doesn’t come continuously. Sometimes you have to wait for the unit to heat the water again, but it won’t take long.
|Max Amperage||30 amps|
|Min. flow to activate unit||0.4 – 0.6 GPM|
|Output water temp. range||95 -131 °F|
|Dimensions||5.31 x 2.36 x 6.59″|
|Highlight Features||3-second instant heating, mini body, easy to install, anti-leakage protection device, IPX4 anti-splash protection, anti-dry protection, hydroelectric isolation protection, housing insulation protection|
Affordable and small, Kbxstart Electric Tankless Hot Water Heater is a budget-friendly alternative for hot baths and other uses.
Titan SCR2 N-120 Electric Tankless Water Heater – Best for warmer weather areas
- Digital display
- Quickly heats the water
- Multiple-function mode
- Automatically controlled system
- Easy to maintain
- Not good for cold areas
The unit accommodates multipurpose wires and cables for different systems in the kitchen and bathroom. Its small size makes installation in space-limiting areas possible.
One of the amazing features from Titan is the resettable thermostat option. It saves the unit from hazardous incidents such as coughing into the fire.
Unfortunately, this water heater is only suitable for warm weather areas where the groundwater is above 70F. Folks who live in cold climates should look for another alternative.
|Voltage||120 – 220 V|
|Max Amperage||54 Amps|
|Min. required wire size & number of runs||6 AWG Wire|
(2-1 type, 2 hots + ground)
|Min. flow to activate unit||0.5 GPM|
|Dimensions||12 x 10 x 5 inches|
|Highlight Features||Recommended Use 1-3 standard bathroom homes, Niagara Industries, digital display.|
Titan SCR2 N-120 Electric Tankless Water Heater is a powerful unit made with advanced technology. This dynamic heater offers exceptional experiences for users with its amazing features.
How to choose the best small tankless water heater (buying guide)
The flow (GPM)
When it comes to tankless water heaters, the size doesn’t matter. Since the hot water never runs out, you should pay attention to the flow instead. In other words, take a look at the BTU and GPM of a water heater.
These two ratings are in proportion. Water heaters with high BTU often result in a higher flow rate.
For small water heaters, efficiency ratings are important. Understanding the efficiency rating of a heater, you know how much fuel it takes to heat water, thus estimate the electricity bill at the end of the month.
The ratings range from 78 to 87 percent, sometimes up to 90%.
Yes, you don’t want to ignore this deal. Warranties don’t assure the initial quality, but it will provide great help in the long-run. The warranty years range from 1 to 5.
Some manufacturers especially offer a lifetime warranty.
Who makes the best small tankless water heater?
Titan Appliances offers high-quality and stylish household items including water heaters. No doubt you will find in love with their design and innovation.
Kbxstart is a young manufacturer supplying household equipment. Their focus is on affordable and versatile products like tankless water heaters.
Since 1955, Marey has been providing an affordable solution for hot water. Their tankless water heaters are dependable and tough.
ECOTOUGH promises to bring innovation and optimization to your house. With over 20 years of experience, they offer efficient and reliable smart water heaters with attractive design.
EcoSmart charms people with their most advanced technology. Their products are durable and reliable.
Rheem was founded by brothers Richard and Donald Rheem in 1925. With over 100 years of operation, this manufacturer is the leading pioneer in the field of household products such as water heating, refrigeration and so on.
Is a tankless water heater worth it?
Tankless water heaters provide a reliable hot water solution for our home. However, some people still question their application and wonder if they are ever worth any penny.
Here are a few reasons why tankless water is a must-have item at home.
- A standard tankless water heater lasts longer than a tank counterpart.
- No pre-heating water. You don’t have to wait to enjoy a hot bath.
- Most tankless models energy efficient, which means lower electricity bill at the end of months.
- Space savings. Tankless models are small and lightweight.
What do you think? It is worth your attention?
Do you save money with a tankless water heater?
Short answer: Yes! While reports vary on how much a tankless water heater can save, but it is an efficient beast. Energy Star estimated that it can save up to $100 a year.
Consumer Reports discounted the number to $70 t0 80 per year. The variable depends on your family water usage as well. Large families tend to pay more than small ones.
Can a homeowner install a tankless water heater?
Although the installation of tankless water heaters is getting easier, manufacturers recommend finding professional support. When it comes to installation, safety issues are critical.
If you aren’t sure about what you are doing, better to seek help. What’s more, you don’t want to mess up with the warranty. Most manufacturers honor the warranty so much that they will refuse to compensate for any installing problems caused by users.
How long do tankless water heaters last?
Do tankless water heaters need to be flushed?
Yes, you do need to provide your tankless water heater frequent-enough maintenance. Flushing the heater is an effective way to get rid of the accumulation of calcium and other minerals inside the unit.
Many manufacturers recommend flushing annually.
Will a tankless water heater increase home value?
It is quite impossible to conjecture the exact dollar value a tankless water heater can add to your home. However, it does make a significant difference at the time of sale.
It is not a luxury feature, but it an attractive one.
Its efficiency, design and small size will hold value for your home.
The bottom line
A small tankless water heater is suitable for small-size families and RVers. It supplies endless hot water, easy to use and install. Certainly, this small feature can add value to your home and turn your life into a luxurious retreat.
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I’m James J. Decker, a hobbyist and DIYs and also a big of home improvement and gardening tools. I immensely enjoy how these amazing products improve productivity and efficiency, and allow me to do jobs for which I would’ve otherwise needed professional help.