Home » Best Water Heater Consumer Reports – Reviews & Buying Guide

Best Water Heater Consumer Reports – Reviews & Buying Guide

Please Note – We get commissions for purchases made through links in this post.

No household can do without a water heater. Taking a hot shower can be a great stressbuster, and water heaters provide people with an opportunity to take a hot shower at will.

In recent years, the market has grown a lot. Water heaters can be found for almost any budget and in all kinds of shapes and sizes.

It is always good to acquire all the necessary information before deciding on a water heater. To help you with the cause, we have compiled a list of the 5 best water heaters along with a comprehensive buying guide.

You can check out consumer reports best water heaters before making your final decision.

What Are The Most Efficient Water Heaters
1. Bosch Electric Mini-Tank Water Heater Tronic 3000 T

Bosch Electric Mini-Tank Water Heater Tronic 3000 T

Bosch brings to you a highly capable water heater that provides you with hot water right when you need it.

The water heater operates on electric power, so you can expect faster heating without any noise.

The capacity of this water heater is 2.5 gallons, which means, you can fit it under your sink and save space for other things.

With a thermal efficiency of 98%, you can’t go wrong with this water heater. Coming to the construction of the water heater, then it is made of a premium glass-lined material that helps it last longer and is easier to maintain as well.

The company has provided a long 37-inch cord that plugs into a 120-volt outlet for independent installation or in-line with a huge hot water source.

The water heater doesn’t just give you water on-demand but also supplies hot water for 2 sinks simultaneously.

When it comes to mounting this water heater, then you can easily mount it on the wall, shelf or floor.

You will get the mounting bracket in the package. You can install the water heater at the sink and make connections with the cold-water line to get hot water.

2. EcoSmart ECO 18 Electric Tankless Water Heater

EcoSmart ECO 18 Electric Tankless Water Heater

One of the easiest electric water heaters to use, EcoSmart ECO has developed a tankless water heater, which offers instant hot water at your will.

The specifications and performance of this water heater are simply amazing, as it has a flow rate of 35 F Rise (Gallons/min) or 3.51 gal/min (US), and an activation flow of 0.3 GPM.

As far as compatibility is concerned, then the water heater is compatible with a couple of 40 AMP (DP) breakers along with a 2×8 AWG wire.

With this water heater installed in your house, you can save up to 60% on water heating costs, thanks to the cutting-edge self-modulating technology incorporated into the unit.

The compact size of this water heater allows you to save up to 12 cu. ft., of storage space.

The water heater features digital temperature control with 1-degree increments to provide you with full control over hot water.

The company provides a lifetime warranty on the water heater against all manufacturing defects.

3. Stiebel Eltron 239223 Tankless Water Heater

Stiebel Eltron 239223 Tankless Water Heater

Here is another highly efficient tankless water heater. You can get an on-demand and unlimited supply of hot water with this unit from Stiebel Eltron.

Despite being so efficient, the water heater is very sleek, thus helping to save space. Moreover, it doesn’t require venting, which makes installation less tiring.

The water heater needs hard-wired 240 or 208-volt electric service with a maximum draw of 21,600 watts at 208 volts or 28,800 watts at 240 volts.

The water heater requires 3 dedicated 40-amp breakers with 8-gauge copper wiring along with a minimum of 200 amp to provide hot water to a house.

If you are suffering from back or neck pain, then you should massage using the best neck and back massager and then, have a hot bath, courtesy of this instant water heater.

4. Rheem RTEX-18 18kW 240V Electric Tankless Water Heater

Rheem RTEX-18 18kW 240V Electric Tankless Water Heater

Check out this tankless water heater from Rheem, which comes with cutting-edge self-modulation along with the ability to adjust the power to meet hot water demands.

The water heater comes with an external digital thermostatic control with a bright LED display.

The thermostatic control has an accuracy of +/-1 degree. The water heater comes with two copper immersion heating elements with a brass top for added durability.

With a flow rate of 4.4 GPM, you can fill the bathtub with hot water in a matter of a few minutes.

Coming to the installation, then it is very simple, thanks to ¾-inch NPT water connections at the bottom.

If you encounter any problem with the water heater, just contact the company and you will get an easy replacement.

5. Camplux ME25 Mini Tank Electric Water Heater 2.5-Gallon With Cord Plug

Camplux ME25 Mini Tank Electric Water Heater

Camplux has rolled out a highly efficient water heater with a capacity of 2.5 gallons.

If you were looking for a point-of-use mini-tank, then your search ends here with this incredible water heater from Camplux.

It can easily fit under your sink to provide on-demand hot water. The water heater is built using a durable glass lining that helps it last longer and makes maintenance a breeze as well.

The inclusion of an elegant streamlined design cover adds an aesthetic appeal to your kitchen.

The water heater features a thermostat control that allows quick adjustment of water temperature.

There has been a high limit set in the water heater that protects it against overheating.

The company has provided a 43.3-inch cord that plugs into a 120-volt outlet for independent installation or in-line with a huge hot water source.

The water heater produces maximum water pressure of 150 PSI, which allows quick filling of buckets.

In the package, you will also receive CSA listed temperature and pressure relief valve for adjusting the temperature and pressure in the water heater.

As far as setup is concerned, then the water heater can be easily mounted on the wall, floor, or shelf after which, you need to tap into the cold-water line and install a water heater directly to the sink for getting hot water.

How to Choose a Good Water Heater?

How to buy a water heater with better value for money? Such a question is often asked by a large number of people who feel confused by the existence of various models in the market.

To find an answer to this question, we will explain through this buying guide for the best water heaters by covering a few important points:

The Capacity Of The Water Heater

A water heater should be chosen based on its capacity and the adaptability of that capacity to your needs. It is only after considering this point that you can start figuring out where to buy a new water heater.

Which water heater capacity is best for you depends on the total number of residents in your home and how often each will use hot water.

Generally speaking, you should plan 50 liters for each person who lives in your house. However, this measurement is only a simple estimate, as the total amount of water to be consumed varies if you use a tub, shower, or sink.

Most of the time, a 150-liter water heater can be sufficient for a family of 2 adults and 2 children. However, take margins depending on the circumstances in which you and each member of your family are using hot water.

In addition, make sure that the frequency with which everyone is going to use the water is also taken into account.

If you and your children are only at home in the morning and evening, except on weekends, because you don’t have time to come home earlier, consumption will be less.

In addition, if you always spend your weekend elsewhere, this consumption will not be the same.


By considering the size of the water heater you are interested in versus where you plan to install it, you will avoid feeling cluttered with the presence of this product.

The reason why the analysis of a price comparator should pass after considering this point. A water heater can exist in vertical, horizontal format and can be wall-mounted or not to suit individual needs and preferences.

You just need to tailor the measurements of where you are ready to install the water heater to the size of the model you are going to opt for, while still providing space to be able to handle this product in comfort.

To do this, you can take a margin of 50 cm, more or less according to your needs.


The warranty that covers the use of a water heater allows you to use this product without fear at any time of having thrown your money down the drain if it does not work properly.

To have a good water heater, the few tips we offer you include taking into account the duration of this warranty. This can range from 3 to 12 years.

The longer this period, the more you can have less worry about the occurrence of a risk of malfunction of the water heater that could make it impossible to use it.

Moreover, if the manufacturer dares to indicate an extended warranty period, it is because he is sure of the quality of his product and does not fear that the buyer will encounter problems while using it.

Different Types Of Water Heaters

Nearly 20% of our energy budget is made up of our hot water consumption. This water is, for the most part, dedicated to hygiene and cleaning.

The water heater, therefore, has a bright future ahead of it. Proof of this is the ever-growing range of models offered and innovations.

The model and features will also determine the price of your water heater.

Instantaneous Water Heater

There are three main categories of water heaters: instantaneous, mixed, and storage devices. Instantaneous water heaters do not have a storage tank.

Using gas or electricity, they heat water on demand and in limited quantities. The water heater works with different energy sources.

Electric Water Heater

Operating with storage or instantaneously, the electric water heater is the simplest model and the most commonly installed in our homes.

By accumulation, it heats the water and stores it in a tank whose capacity varies according to your needs.

It is this capacity coupled with the type of resistance – heat-diving or soapstone – that will determine the price of your electric water heater.

Gas Water Heater

Like the electric water heater, the gas water heater can produce water instantaneously or by accumulation.

It can prove to be an interesting investment in the medium term and lower your energy bill compared to electric water heaters, even if it is often more expensive at the start.

Thermodynamic Water Heater

Truly innovative, the thermodynamic water heater has a heat pump and a storage tank. The ambient air is transformed into gas which is then responsible for heating the water.

More expensive to buy than a standard water heater, the thermodynamic water heater makes it possible to achieve significant energy savings in the medium term and therefore, can give you a tax credit.

Note that some water heaters use fuel oil as an energy source, while other models are now solar-type. This is undoubtedly a product of the future, still relatively expensive to buy but can significantly reduce energy bills.


How Do Water Heaters Work?

Water heaters are devices that heat water for various purposes, such as domestic use, heating systems, or industrial processes. The most common type of water heater used in households is a storage-tank water heater. Here’s a basic overview of how it works:

Cold Water Intake: The water heater is connected to the main water supply, and cold water enters the tank through a dip tube located near the top.

Heating Element or Burner: Inside the tank, there is either an electric heating element or a gas burner (typically fueled by natural gas or propane). These heat sources are responsible for raising the water temperature.

Thermostat: The water heater has a thermostat that allows you to set the desired temperature. When the water temperature drops below the set point, the heating element or burner is activated.

Heat Transfer: The heat from the heating element or burner is transferred to the water in the tank. The heated water rises to the top of the tank, while the colder water sinks to the bottom.

Hot Water Outlet: When you turn on a hot water tap in your home, hot water is drawn from the top of the tank through a dedicated hot water outlet pipe.

Pressure Relief Valve: Water heaters have a pressure relief valve as a safety feature. It releases excess pressure if the pressure inside the tank becomes too high.


How To Install A Water Heater?

Installing a water heater requires some plumbing and electrical work. It is important to note that water heater installations can vary depending on the type of water heater (electric or gas) and the specific model. Here are general steps to guide you:

Choose the right water heater: Consider the size, capacity, energy efficiency, and fuel type (electric or gas) that suits your needs.

Shut off utilities: Turn off the power supply (electricity or gas) and shut off the water supply to the existing water heater.

Drain the tank: Connect a hose to the drain valve at the bottom of the tank, and drain the water into a suitable drain or outdoors.

Disconnect existing connections: Disconnect the electrical wiring (if applicable) and any plumbing connections from the old water heater.

Prepare the new water heater: Install any necessary fittings or valves onto the new water heater, following the manufacturer’s instructions.

Position the new water heater: Carefully position the new water heater in the desired location, ensuring it meets local building codes regarding clearance and ventilation.

Connect the plumbing: Use new plumbing fittings as necessary to connect the cold water intake and hot water outlet to the appropriate connections on the water heater.

Connect the electrical supply: If you’re installing an electric water heater, connect the electrical wiring according to the manufacturer’s instructions. It’s recommended to have a professional electrician handle this part.

Fill and test: Open the water supply valve and fill the tank. Check for any leaks and ensure the water heater is functioning properly. Follow the manufacturer’s instructions for initial setup and adjustments.


How To Fix A Water Heater?

Water heater issues can vary, but here are some general troubleshooting steps you can take:

No hot water: Check if the power supply (electricity or gas) is connected and functioning. For electric heaters, ensure the circuit breaker hasn’t tripped. For gas heaters, make sure the pilot light is lit. Adjust the thermostat to a higher temperature and wait for the water to heat up.

Insufficient hot water: If you’re not getting enough hot water, the thermostat may need adjustment or replacement. Sediment buildup in the tank can also reduce heating efficiency, so consider flushing the tank to remove any debris.

Leaks: Inspect the water heater and surrounding pipes for any visible leaks. If you find a leak, identify its source. It could be a loose connection, a faulty valve, or a crack in the tank. Tighten any loose fittings, replace faulty valves, or apply a patch or sealant to small cracks. However, keep in mind that significant tank leaks may require professional assistance or even a replacement of the water heater.

Discolored or foul-smelling water: If the hot water appears discolored or has a strange odor, it could be due to sediment buildup or a reaction with the anode rod in the tank. Flushing the tank to remove sediment or replacing the anode rod can often solve these issues.

Strange noises: If you hear popping, cracking, or rumbling noises coming from the water heater, it may indicate a buildup of sediment. Flushing the tank can help eliminate the sediment and restore normal operation.

Pressure relief valve issues: The pressure relief valve is a safety feature that releases excess pressure from the tank. If it continuously leaks or fails to operate correctly, it may need to be replaced.

Noisy or malfunctioning heating element: If you have an electric water heater and experience issues with the heating element, such as no hot water or inconsistent temperature, the heating element may be faulty. Testing and replacing the heating element can resolve this problem.

It’s important to note that water heater repairs can involve potentially dangerous components and should be approached with caution. If you are unsure or uncomfortable with performing repairs, it’s advisable to contact a professional plumber or service technician who can diagnose and fix the issue safely and effectively.

Final Verdict

It is impossible to fathom a house without a water heater, so if you have been using conventional and tiring methods of heating the water, then you must ditch those and buy a water heater to get hot water on-demand.


The purpose of consumer reviews & reports water heaters was to present you with the best available options, so if you have gone through the reviews and shortlisted a product, then place your order today.