Consumer reports tankless water heaters

Consumer reports tankless water heaters. Tankless water heater tankless provides hot water in winter at a rate of 2–5 gallons per minute.

It takes up much less space than storage water heaters. Tankless water heater saves your money by consuming less energy than water heaters. These tankless heaters have a longer lifespan than tank water heaters.

If you have a large family and you want hot water for multiple showers and appliances simultaneously, then tankless water is a perfect option for that. Tankless water heaters have a higher purchase cost and their installation is also expensive.

8 Consumer reports tankless water heaters

Product Imageecosmart ECO 18 Electric TanklessCheck Price
Product ImageBosch Electric Mini-Tank Water HeaterCheck Price
Product ImageRinnai Indoor Tankless Hot Water HeaterCheck Price
Product ImageStiebel Eltron Tankless Water HeaterCheck Price
Product ImageGarosa 3KW Mini Electric TanklessCheck Price
Product ImageCamplux Electric Tankless Water HeaterCheck Price
Product ImageEemax EEM24013 ElectricCheck Price

Types Of Tankless Water Heater

There are three types of tankless water heaters.

Non-condensing Tankless Water Heater

The non-Condensing is the first generation of the tankless unit. Non-Condensing heaters use a heat exchanger. This heat exchanger provides heat energy to the water that reaches an efficiency factor of 0.82- 0.85. The benefit of this type of tankless water heater is that it is an established product.

Condensing Tankless Water Heater

Condensing heaters are the second generation of tankless water heaters. These units use two exchangers primary and secondary heat exchangers. These exchangers increased efficiency by 92-94%. This unit can also be vented by using PVC. These types of tankless heaters are expensive.

Condensing Hybrid Tankless Water Heater

These units are the third generation of tankless water heaters. Its capacity range is between 1 liter and 2-gallon. Its holding tank keeps a reservoir of hot water. Also eliminates lower efficiency for short draws. These units can consistently be operated at 94% efficiency.

1. Ecosmart ECO 18 Electric Tankless Water Heater

ECO 18 one of the energy-efficient electric tankless water heaters. This unit is ideal for homes and businesses such as offices or restaurants, or even recreational vehicles by providing the warmth of endless hot water.Tankless Water Heater Reviews

This unit not only delivers endless hot water but also saving space, time, money, and energy. Comes with all the safety standards and it is also a reliable unit. This tankless water heater is also easy to install.

This unit provides you endless on-desire hot water. It gives heat to water when it passes through the unit, unlike the traditional water tank heater which storing hot water. Comes with a sleek, wall-mounted design that frees up more space for more storage.

An interesting feature of this is that its advanced self-modulating technology saving more energy. This technology allows only using the amount of energy needed to heat water.

It is an 18-kilowatt tankless electric water heater that provides between 1.8 and 4.3 gallons-per-minute depending on the inlet water temperature. This unit is highly durable and easy to use. This product is manufactured in china.

Its all components are constructed with copper and stainless material. This unit is not too expensive it saves up to 60% on your water heating costs. Also, this unit saves up to 12 cubic feet of storage space. Comes with a lifetime warranty for residential use.


  • Highly durable unit
  • Saves more energy and space
  • Delivers endless hot water on-desire


  • Comes without remote that controls temperature

2. Bosch Electric Mini-Tank Water Heater

Bosch is one of the best-selling products and also it is a convenient hot water heater. This unit uses a 4-gallon point of use mini tank that easily fits under your sink. It provides hot water right where you need it with a thermal efficiency of 98%.Electric Tankless Water Heater Reviews

Comes with a temperature and pressure relief valve that is installed. This unit can be plugged right into a 120-volt outlet with the 36-37″ cord.

Its glass-lined tank offers insulation which increases its durability. No need for long waits for hot water because of the heater’s fast recovery. You can easily control the temperature range with an external dial.

Constructed with high-quality material which makes it more durable and enhances its lifetime. Also, this tankless water heater comes with thick CFC-free foam insulation for maximum energy efficiency.

This unit is great and perfect for small spaces due to its compact design. It has lightweight and can be mounted on the floor, shelf, or wall-mounted. Moreover, this unit has an attractive and sleek design that looks beautiful where you mounted this unit. For safety, do not use it if it has a damaged cord or plug.

Also, if it is not working properly, or if it has been damaged or dropped, do not use it. Comes with a 6-year warranty on the unit, 2-year warranty on parts.


  • Long-lasting quality
  • Fast recovery rate
  • Easy to mount


  • Pressure valve starts leaking

3. Rinnai V65IN Consumer reports tankless water heaters

Rinnai V65IN provides endless hot-water on your desire. This unit is perfect for household use it will never run out of hot water.Best Electric Tankless Water Heater For Cold Climates

This unit comes with ThermaCirc360 technology which recirculates hot-water through pipes to provide hot-water fastly. This unit also saves about 16-ounce bottles of water.

It is a perfect combination of high efficiency, comfort, and value in a natural gas tankless water heater. 

This tankless water heater is ideal for small to medium homes or remodels. Comes in a compact size that can easily be mounted.

Comes with a simple installation process and also this unit is reliable and perfect for indoor locations.

This unit also comes with a temperature range between 98°F – 140°F. It is also compatible with a full line of Rinnai Digital Controllers. Moreover, comes with a flow rate of 6.5 GPM.

Rinnai is the #1 selling gas tankless water heating brand in North America. Comes with smart technologies such as a Wi-Fi monitoring system. You can monitor the efficiency of your tankless water heater.

The interesting thing about this unit is that it’s every component is replaceable. Instead of buying a new tankless heater, you can replace its components that are not working or damaged. Comes with a 10-year warranty on heat exchanger while 5-years on parts.


  • Provide endless hot-water
  • Up to 6.5 GPM hot water flow rate
  • 6-year warranty


  • Most expensive unit

4. Stiebel Eltron Tankless Heater

Stiebel Eltron is another efficient water tankless heater. It supplies continuous and unlimited hot water on-demand. Comes with exclusive Advanced Flow Control German patented technology.Tankless Water Heater Vs Conventional

This technology allows automatically maintains water temperature for constant comfort. This powerful unit is engineered in Germany. This unit is performed to the highest standards for comfort and reliability.

This unit can reduce the flow slightly if hot water demands exceed capacity. This energy-saving unit uses 15-20% less energy compared to conventional electric tank water heaters. This unit does not need venting and also will not store hot water like a typical tank water heater.

This unit is also certified by ANSI, CSA, ISO, WQA, and NSF against various standards such as 499, 88, 9001, and 372. Comes with a copper sheathed heating element housed in a copper cylinder.

This unit also comes with a digital display for accurate temperature delivery and maximum energy efficiency. It has also pre-set temperature buttons for temperature memory settings. Moreover, this unit requires a voltage range from 208 V- 240 V.

Also this unit is compact, lightweight and its sleek design also saves more space. Comes with an electronic switch activated for silent operation. Stiebel gives 7 Years leakage and 3 years parts complete warranty with this unit.


  • Designed in Germany
  • Saving and water flow monitors
  • No venting required


  • Expensive installation

5. Marey GA10LP best tankless gas water heater 2019

MAREY GA10LP is indoor propane gas tankless water heater. This unit can provide up to 2. 7 gallons of hot water in a minute. It provides a perfect shower at 115°F output water temperature. This unit is also called a water heater on demand because it provides hot water only when needed.Whole Home Tankless Electric Water Heater

This water tankless heater saving more energy. Made in the USA and it’s perfect to supply endless hot water. It can deliver water for up to 2 or 3 points of use simultaneously.

This compact unit saves space and allows for easy installation. You can install this unit just about anywhere. This unit is also ideal for those homes experiencing frequent power outages since this heater does not require electricity.

This unit provides hot water with a flow rate of 3.1 Gallons Per Minute. The remarkable advantage of this tankless water heater is that it saves up to 60% on electricity bills for water heating.

It requires a 2-D cell battery for the ignition and a venting. This tankless heater brand has been in the water heating business since 1955. This unit can last a lifetime, keeping an 87% efficiency level.

The maximum distance range from point of use is 50 feet. Moreover, in this unit, the incoming water temperature does not exceed 90 degrees because incoming water being too hot could damage the rubber diaphragm. Comes with a 5-year warranty.


  • Save up to 60% on electricity bills
  • Provides unlimited hot water on-desire
  • 5-year warranty


  • Bad battery panel design

6. 3000W Mini Electric Tankless Instant Hot Water Heater

3000W Mini is another efficient and powerful unit. One thing to keep in mind before purchasing this unit that it needs a larger than 32 amps circuit breaker. To enhances its longevity, the company uses high-quality material.Mini Electric Tankless Instant Hot Water Heater

You will be confident of its durability. This unit also features stainless steel while its connector is a product of brass.

Brass not only makes the unit durable but also safe for you. Due to waterproof material, this unit can withstand any environment or weather.

This unit is easy to operate there will be no worry when using this product. Comes with enhanced accessibility of various dials that ensure you adjust the temperature and speed with ease.

With its simple operation, it saves your time, and as long as you remain in control of the flow of water getting the ideal temperature will not a problem.

Moreover, for desire outlet water temperature the electric water heater is suggested for a sink in a summer shower, not suggest use in winter shower.

Comes with one of the most reliable LCD temperature display features. It is very easy to monitor the temperature and no need to be afraid of your safety levels. It would be advisable to install it vertically for better performance.

This unit always improving energy efficiency as well as saves water. Comes with sturdy construction and an exceptional shape which perfectly fits anywhere in your home.


  • Durable and sturdy
  • Increases safety level
  • Attractive and impressive design


  • Some users might find the poor pipe threads

7. Camplux Electric Tankless Water Heater

Camplux electric tankless water heater provides consistent hot-water on demand no need of waiting for preheating.  Comes with a flow rate of 1.0 GPM with a temperature of 55°F. Provide hot-water between 85°F – 131°F in seconds.Electric Tankless Water Heater Reviews Consumer Reports

Comes with a compact size and sleek design. You can easily mount this unit at any angle. This unit is also ideal for kitchen, school, bathroom, hospital, and hair salon sinks.

Comes with smart technology this heater is designed with smart touch, control, and digital display. Its mini size also saves space perfect for under sink installation. It requires just need 0.4 GPM for minimum water flow for activation.

The tankless instant water heater is leakage proof. Also, the over-heat protection will start when the temperature reaches 131°F while its smart control lets you know about your favorite temperature.

This unit is also safe in use. It saves electric energy and saving water without generating pollution. For safety purposes, all the current and voltage power problems are strictly tested.

This product is made of high-quality material. Uses stainless materials for its construction. Its connector is made of brass and the tankless water heater is also durable and portable. Rotatable LED display would reverse when you mount upside down.


  • Comes with rotatable LED display
  • Reliable and durable unit
  • Easy to adjust the temperature


  • Some users find that there are heating issues

8. Eemax EEM24013 Electric Tankless Water Heater

Eemax EEM24013 is an electric unit that works like other tankless appliances. This unit provides a continuous supply of hot -water and only heats the water you need.Bradford White Water Heater Reviews Consumer Reports

This tankless water heater is ideal for residential homes, apartments, cottages, and offices. It provides an endless amount of hot-water to point-of-use and whole-house applications.

Comes with a modern look and looks cool in the kitchen or bathroom as it blends nicely into the cabinets or the wall.

This unit utilizes the stainless steel casing for longer element protection and life. Comes with a small and compact design, is easy to handle, and simple installation process. You can mount this unit on the wall and under the sink or inside the cabinet and saving more space.

Comes with only one heating element. Its smallest unit requires 8 KW power requires less work and time during the installation. This model is also safe for use due to its scald prevention system and computer-controlled micro-processing features.

It is also equipped with the immersion type heating element, made of copper. This unit heating the water with 99% energy efficiency and saves more energy. There is no energy loss in this unit and water is heated instantaneously.

Comes with advanced water flow, temperature sensors, and computer logic controls features. These features help in keeping the water temperature stable, minimizing the fluctuation, and as close as possible to the set value.


  • 99% energy efficient unit
  • Keeping the water temperature stable
  • Easy handling and simple installation


  • Some users complaint about fittings leakage on the inlet and outlet sides

Buying Guide (Consumer reports tankless water heaters)

Tankless water heater gas or electric. When buying the best tankless water heater you should have knowledge about some parameters. Here we will discuss these parameters for you.

Higher Efficiency

Your tankless water heater should be highly efficient.

Condensing gas heaters can extract 96% of fuels while the second heat exchanger captures much of the exhaust heat before venting.

Highly efficient heaters may be expensive while these units save fuel or electrical energy for you.

Flow Rate

Flow rate is another important parameter it depends on the household demand for hot water.

If there are more fixtures used simultaneously requires a high flow rate. While buying a tankless water unit make sure the unit is perfect according to your demand.

Wi-Fi Compatible

Make sure that the unit you are going to buy equipped with all the smart technologies. Some units also come with wi-fi compatibility which makes it easier to handle.

Replaceable Components

Also, make sure that the tankless water heater comes with replaceable components. In the case of any damaged part, you can replace it instead of buying a new unit. It saves your money that you will spend on buying a new unit. Consumer reports tankless water heaters.


How do tankless water heaters works?

Tankless water heaters heat water directly. This unit works without the use of a storage tank. When you turned on a hot water tap is turned on the cold water travels through a pipe into the unit.

This unit can be powered by both gas burners and electric elements. These units deliver a constant supply of hot water.

How to install a tankless water heater?

First, shut off the water and the gas to the hot water tank and drain out the water, remove the old tank. The new water heater may require a larger gas line.

Drill a hole on the outside of the house near the location of the water heater. Connect the cold water line to the heater while hot lines out of the heater.

Use electrical outlets for on-demand water. A crossover valve can be installed at the furthest plumbing fixture to allow the built-in recirculation pump to keep hot water at the ready.


After a lot of research, we conclude that Ecosmart ECO 18 Electric Tankless Water Heater and Bosch Electric Mini-Tank Water Heater are our best products.

These units are equipped with all the essential and advanced features. These features make these units more efficient and reliable. Electric tankless water heater reviews.

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