Bosch Water Heater Review- Best Heater For Home Use

You have already know how much tough it is to take a shower in the winter! Besides, it is important to take a hot bath after completing a big season of work. It will enhance your comfort as well as relieves your stress level, right? Today I am going to have taste of several brand of  Bosch water heaters reviews here.

So, whatever the reason or season is, you should purchase a water heater for you. Probably, your heater is due for an upgrade. Or else, you want to buy the newest one, which should be compact, versatile, and affordable at the same time.

Luckily, you have come into the right place, as we've made an article for you about the Bosch water heater.

What is Bosch?

It is one of the popular and demandable brands out there. Because they have several tankless models that are compact and affordable as well. Moreover, these will be long-lasting if you maintain properly. If you read the entire article, you will know how worthy it is for your house!

So, I have drawn up a list of the Bosch hot water heater for you.

Top 3 Bosch Water Heater

Not only the reviews but also you have to read the entire buying guide to know the proper information. We have picked our only 3 choices for you. These 3 water heaters are running hot in the marketplace! So, it's time to move on to the comprehensive reviews to know in detail:

Bosch Tronic 3000 T 7-Gallon Water Heater is the front runner, which is the best of the best on our list. It arrives with a sleek design along with a massive capacity. Although it is compact in size. But, it contains around 7-gallons of water, which is not as bad as comparing.

Moreover, the installation process is rather easy and efficient. You can choose anywhere to install the heater either under the sink, or mounted on the wall. Further, you can keep it in a vertical, or horizontal position. It can warm the water conveniently with the temperature range from 65F to 145F.

It delivers nearly 1440 watts with a voltage of 120. This is got a thermal efficiency of 98%. This actually makes it more convenient and reliable as well. You will find it good as usual for the supreme operating pressure of 150 psi.

With the measurement of 17.5 W x 17.5 H x 14.5 D Inches, it comes with a lightweight design. When it comes to durability, Bosch Tronic 3000 T 7-Gallon Water Heater comes with a glass-lined and insulated tank body. You can monitor the temperature by the pressure and temperature relief valve. No battery is needed at all.


  • Compact and relatively cheap.
  • 7-gallons of the water capacity.
  • Easy to install.
  • The temperature range is 65F to 145F.
  • 1400 watts with the 120 volts.
  • 98% more efficient.
  • Included with pressure and temperature relief valve.
  • Durable construction.


  • Water liking issue.
  • The flow rate of water can be bad now and then.

If you are somebody who wants to add a compact yet effective water heater into a small house, then this product is definitely for you. You can install the device wherever you want. It doesn't take a large space. Rather, you can adjust it under the sink, or mount on the wall for your convenience.

It is included with a water capacity of 2.5-gallon. As you can see, it is perfect for a single shower. The glass-lined material is designed for ensuring a long lifetime. With the voltage of 120, it requires at least 12 amp to run.

Like the previous one, it utilizes 1440 watts. Indeed, it will always keep you away from long time waiting, why? Because it has a fast recovery rate, which is efficient and quicker at the same time! You can run 2 sinks at once for sure. Moreover, the water flow will not be going to irritate you anymore.

As it appears with a pressure relief valve, so it will guarantee you the ultimate safety that it provides. Also, it got a thermal efficiency of 98%. It will conserve the wastage of water and spare bills as well. As a lightweight heater, it is weighing only 15.5 pounds.


  • 2.5 gallons of capacity.
  • 12 amp minimum with 120V.
  • Fits in most of the places.
  • Ideal for a small family.
  • Lightweight and compact.
  • The thermal efficiency rate is around 98%.
  • Rather easy to monitor the temperature.


  • Nominal child safety.
  • Not for a bigger house.

This is our last product from Bosch. Actually, it is almost like the same as Bosch Tronic 3000 T 7-Gallon Water Heater. Hence, the only difference is the capacity. It comes with a 4-gallon capacity. Probably, it is a bit low than the previous one, but not the least as comparing.

This is mainly designed for those who have a lower water demand. Easily you can run a hot shower or a sink. Additionally, the process of installation is quite good. Choose anywhere to install the heater, whether it is under the sink, or on the wall.

As we've mentioned before, the premium glass-lined material is durable and long-lasting. No chance of cracking due to the stiff material. The heating capacity is around 120V, and you need 12 amp at least to run efficiently. Furthermore, it will be able to offer a better service, as it arrives with 36 to 37 inches cord plugs.

Thanks to the fitted thermostat, because you can control the temperature according to your specific demands. Like, you can choose either min, ideal, or max. It has a high resistance to heat up water. Overall, it will provide you the desired amount of hot water for sure!


  • Relatively cheap and compact in size.
  • The capacity is about 4 gallons of water.
  • It suits almost every place.
  • Simple to install as well.
  • More energy efficient.
  • Proper temperature controller.
  • Perfect for a small house.


  • Have to purchase a separate stabilizer if you need to adjust it on the floor!
  • Again, not suitable for a large family.

Important Information: How to Install an Electric Water Heater? 

It can be a challenging task for you to install an electric water heater. However, if you have just a few knowledge of electrical work and plumbing, you can install the heater into your house conveniently.

Materials and Tools Required

Before installing the device, you have to gather some necessary tools to make your work easier. These are:

  • Voltage detector.
  • Gloves.
  • Pipe cutter.
  • Soldering iron.
  • Screwdriver.
  • Flexible hoses.
  • Plumber tape or pipe dope.
  • Sandpaper cloth (optional).

The Process of Installing an Electric Water Heater

Step 1: Turn Off the Electricity

At first, you have to disconnect the power from the circuit heater. Next, check out the heater with a voltage detector. Make sure that the unit is turned off.

Step 2: Disjoin the Electric Wire

Now, you have to disconnect the cables from the upper part of the heater. As a precaution, re-check the circuit breaker to see that it is off or not.

Step 3: Disjoin the Supply Pipes

You have to disjoin the cold and hot water supply pipes. It is necessary to cut the pipe if your heater was plumbed with copper pipes.

Usually, a pipe cutter is ideal for pipe cutting purposes. For allowing easy fix, you need to leave a sufficient portion of the pipe. Moreover, you can select to remove the discharge tube from the T&P Valve.

If the tube is not damaged, you can either reuse it on your recent heater.

Step 4: Reconnect the Pipes

It is time to join the cables. All you need to twist them hard by using wire connectors. As a guide, you can use the former wire connections and reconnect them properly. Further on, replace the box cover.

Step 5: Install the Water Supply Lines

Be prepared to install the supply line. First, attach the line and turn on the water. Then, you need to connect both cold and hot water lines.

Join them properly.

Step 6: Fix the Tube of Pressure and Temperature Relief Valve

You have already known the importance of the pressure and temperature relief valve. So, it is necessary to fix the pipe correctly. For connecting the pipe, you can use a torch and the solder.

Step 7: Turn On the Circuit Breaker

It's time to switch on the circuit breaker. Let the tap on for a couple of minutes. It can take a little time to be heated thoroughly. So, you can set the temperature in the range of 100F to 120F. Re-check the tube after many hours.

Due to the high pressure, the tube can drip. Don't need to be worried. After a while, it will fit by itself. You have to make sure that the heater is getting a sufficient amount of power.

Warning: If you watch something wrong, then you need to turn off the main switch and take for help an electrician.

Buying Guide: Factors to Consider While Purchasing the Bosch Water Heater

There are several factors to consider while purchasing the Bosch water heater. So, you have to note down the major points before any purchase, as the market has a variety of water heaters with different models.

In that case, it is a fact of confusion about which one you need to purchase. To minimize your stress, we have made an effective buying guide for you. Moreover, we are going to include the products along with the points for your convenience. You should straightly go down to the features to know in detail:


At first, you have to know the reason why you are purchasing. Are you belonging to a bigger family? Then we have a compact yet effective choice for you.

Bosch Tronic 3000 T 7-Gallon Water Heater will be a smart option for those who are living in a big family, as it comes with a large 7-gallons of water capacity. Furthermore, the water flow rate will be sufficient as well. 

On the other side, Bosch (ES2.5) Electric Mini-Tank Water Heater is effective and compatible with small-family, who are going to run only a single shower or 2 sinks together.


Well, it is another core point that you have to consider. Although they are counted as mini-tanks. However, you need to focus on the capacity, if you are in a large family. The more capacity, the more water it can store at once.

Bosch Tronic 3000 T 7-Gallon Water Heater is enough for a large family, as it comes with a 7-gallons of water capacity. Further, you can pick out the Bosch (ES4) Mini-Tank Water Heater, if the demand for water is average.

Installation Process

Yes, you need to consider this point. Or else, you may end up with big issues, which you don't expect.

Luckily, all of the products that we have mentioned are useful and easy to install rather than others. You don't have to face any trouble to install the water heater. They are compact, simple yet suits in tight spaces. Even, you can fit it either on the floor, on the wall, or under the sink.


It is a feature that is not going to confuse you. If you can control the temperature in your specific need, it will be a piece of cake to get the desired result. Moreover, it reduces the chance of overheating and overloading at the same time.

Bosch water heater comes with a pressure and temperature relief valve so that you can monitor the temperature efficiently.


Who doesn't want a budget-friendly water heater? Everyone wants. Due to the different specs and models, you have to check the type that is relatively cheap and handy. If you can easily get an efficient, user-friendly, and more capacity included water heater at a reasonable price, so why are you going to spend a heap of the penny?


How can I choose the appropriate size of an electric water heater?

If you are going to use two sinks or two showers at the same time, then at least you will require 5-6 gallons per minute. This is only for those who want a steady and continuous water supply.

Are electric water heater more energy efficient than the rest?

Most probably, yes. It is more than energy-efficient than the rest. An electric heater can easily save around 97 to 98% of energy, whereas a typical gas water heater can save only 78-80%.

How can I prevent tank leakage?

Sorry to say, there are probably no specific rules to prevent the tank leakage. However, if your heater stands in a warranty period, then we suggest you take this unit to the seller or manufacturer.


The market is loaded with a couple of water heaters. But especially, the Bosch water heater is useful, versatile, energy-efficient, and reasonable at the same time.

Again, I want to let you know that they will be very simple to install and use as well. We hope that you can find the best one for you if you are going through the entire review as well as the buying guide. Instead of waiting for long hours, you can get hot water in an instant from now.