5 Best 110 Volt Tankless Water Heater

best 110 volt tankless water heater

A water heater is a very important machine in the daily household. Almost every country goes through winter every year. If you want to learn more about water heaters, here is an article I wrote about water heaters. I encourage you to read it!

In those days, the water temperature decreases so much that sometimes it becomes impossible to work with.

Also, working with cold water all the time is not healthy at all. Countries like Canada, Finland, and Iceland always have a temperature below normal.

A water heater is a machine that will provide you with hot or warm water whenever you want.

They can be with or without tanks, electric or non-electric. In this article, we will talk about the most simple water heater— 110-volt tankless electric water heaters.

What Is a Tankless Water Heater?

A water heater is a machine that heats up the water. A tankless water heater is a water heater that provides hot water without storing it. Another name for this water heater is the on-demand water heater.

Because they don’t store the hot water and heat the water only when demanded. As we know, you need fuel to heat up something.

This is where 110 volts tankless water heaters come in.

The fuel for a water heater can be either electricity or gas. Most of today’s water heaters are electric. They are small in size so that you can fit them anywhere.

5 Best 110-volt Tankless Electric Water Heater

Considering your problems and conveniences, we have made a list of 5 best 110-volt electric water heaters. All these products have very good ratings and reviews from the customers and buyers. Just go through the list and see which one suits you the best.

1. Tankless Electric Water Heater With LCD Digital Display 110V (Best Budget)

best 110 volt tankless water heater

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This 110-volt tankless electric water heater is a product of RANZHIX. RANZHIX is a comparably new brand in the market but it is doing very well. That is why this product is number one on this list. First, let’s share some basic information. The voltage and power rating of this machine is 110V and 3000W. It has a US plug that you have to connect with the power source. The heating material (metal coil) is 304 Stainless Steel. The temperature range it provides is 70°F to 125°F. The start-up pressure might be around 0.5 MPa.

Installation Process: At first drill holes in the wall to mount the water heater. They fix the machine using screws. Connect the outlets and inlets. Let the water through from the water source. Switch up the machine and test the water. A manual will be provided with the product. If you have any other questions, the book will help. And of course, RANZHIX has very attentive customer support.

Features and Capabilities

This RANZHIX is the best seller electric tankless heater on Amazon. It is also a smart device. The product package includes one tankless electric heater and a manual. When switching the device, you just have to count up to three Mississippi’s to get hot water. If this water heater finds any leakage within the machine, it will instantly stop its water flow to ensure safety. So you will get safe hot water or no water!

It has an LCD display monitor which indicates the water flow rate and temperature.

This 110-volt tankless water heater only uses power when you want hot water. Other times, it sits idly without wasting any power. This is a huge energy-saving feature. If you compare tankless water heaters are 40% less power-consuming than a water heater with a tank. This product is also waterproof and has a water-electricity isolation system. So you don’t have to worry about getting electric shocks. It also comes with dry heating protection.

The other two very convenient features are auto power-off at the inactive state and over-temperature automatic power-off. Unfortunately, this product does not come with any warranty or guarantee policies from the manufacturing company. Also, this product requires a larger than 32A circuit breaker. And the water will not be too hot to handle.

  • This water heater provides hot water within 3 minutes of demand.
  • It stops the water flow if any leakage is detected.
  • It is suitable to use on any pipe.
  • The installation process is very easy.
  • It saves energy which will decrease your electricity bill.
  • It comes at a very reasonable price.
  • Not Suitable for outdoor use.
  • The flow of hot water is inconsistent.
  • It has no guarantee or warranty on the product.

2. EastBuy 3000W 110V Mini Electric Instant Water Heater

best 110 volt tankless water heater reviews

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This electric tankless water heater is from Eastbuy. The outer body of this product is of a beautiful golden pink color. It is also available in black. The power rating is 3000W, the current rating is 25A to 32A. The metal coil material is a stainless steel shell.

This product is ideal to install under a kitchen sink. And the water provided by this water heater will not be boiling hot. It will be hot enough for you to work using the water. So this is an ideal water heater to use for kitchen work but suitable to use on showers, bathtubs, and swimming pools.

The dimensions of these products are 20 x 10 cm (LxW, approximate) and the wire material is copper.

It requires a larger than 50 amps circuit breaker to function. Please remember this information carefully. Because there have been reports that the larger than 32 amps circuit breaker used for this device has melted. So please use a circuit breaker larger than 50 amps for your own safety.

Features and Capabilities

This product comes with a tankless water heater, two fixing screws, two screw protectors, and a manual for the heater. This water heater gives instant hot water. It can raise water temperature 30℃ to 55℃ depending on the temperature of the inlet water.

The most attractive feature of this tankless electric water heater is that the temperature is adjustable. It is done by controlling the flow of hot water.

This water heater is small enough to fit under a kitchen sink. It is recommended to mount vertically to achieve maximum efficiency.

This product saves up to 50% of your electricity bill and there is no scope for environmental pollution. So this 110-volt tankless electric water heater is green, compatible, and power-saving.

Also, the installation process is very easy. You will not need any special tool to mount the water heater on the wall or under your kitchen sink. You will find the process in detail in the manual that comes with the package.

  • Suitable for use in the kitchen, restroom kitchen, etc.
  • The size and shape are very compact and convenient.
  • This machine is very efficient which means it wastes less power.
  • It has an LCD display that shows temperature and water flow rate.
  • The water temperature is adjustable in this device.
  • The cord is only 3 feet long.
  • This product is not very durable.
  • There might be a need for an adapter to make the water heater function properly.
  • Not suitable to use in the bathroom and swimming pool.

3. Vinmax 2019 110V Hot Tankless Water Heater (Best Value)

110 volt tankless water heater

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The third product is from the Vinmax 2019 series. Vinmax is an American company. This company has good customer care service.

This Vinmax 2019 series product is a tankless 110-volt water heater. The power rating of this product is 1500 watts which makes it a lot less power-consuming. A free operation manual is given with the water heater machine. This machine can withstand water pressure of .02 MPa.


Some installation notes: The water heater cannot be mounted sideways. It mandatorily needs to be standing with the outlets facing up and the tank should be in the bottom. And this water heater can be mounted under a sink. But make sure the water inlets are pointed downwards.

Features and Capabilities

This is an 8L tankless electric water heater with a voltage rating of 110. The inlets and outlets ports of this water heater are marked red and blue. So there is no way you get confused while installing the machine.

Now as the installation is mentioned, this electric water heater can be installed in multiple ways and all of them are very easy. The temperature of the hot water is adjustable.

And the machine will automatically turn the power off when the demand temperature is reached.

This water heater can work with very low water pressure as well. So you don’t need to buy an additional pump for the water heater. Also, this water heater is very lightweight and has an ergonomic design.

It can be even installed in a very congested household.

  • It has auto turn off options.
  • You can raise the temperature to 75℃ and it is adjustable between 55℃ to 75℃.
  • It has a nob, by which you can control the temperature.
  • This water heater can be installed anywhere inside your house.
  • It is made of completely green material.
  • Not suitable for outdoor use.
  • It does not have an LCD or LED display to indicate the temperature.

4. Thermolfow 110V 3.5kW Mini Tankless Electric Water Heater

thermoflow 110 volt tankless water heater

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Thermoflow is an American water heater manufacturing company that has been attentive to people’s comforts for some time. This company manufactures both tankless water heaters and mini-tank water heaters. The company has very good customer support too.

This Thermoflow water heater comes with two types of voltage ratings— 110 volts and 240 volts. As this article is about 110-volt tankless water heaters, we will only provide information about the 110 one.

The dimensions of this product are 7.4 x 5.4 x 3.4 (H*W*L) and it weighs about three pounds. The pipe width requirement for this heater is at least half an inch in diameter. The power rating is 3,500 watts and it needs a water pressure of 1 MPa. The normal current rating is 29A. This water heater requires a 30A circuit breaker.

Features and Capabilities

The most important fact about this Therflow 110V tankless electric water heater is that it comes with a 2-year warranty. All the replacement of the machine is free in these 2 years. If the heater is faulty, you can even get refunds.

The temperatures of water can rise to 45°F. This temperature is ideal for working in a sink but not good for using in bathroom showers or bathtubs. And definitely not suitable to use in a washing machine.

Another convenient feature of this product is the size. It is very small in size, so you can fit it anywhere in your house.

This electric water heater is durable for many reasons. The material used in this product is high-quality alloys that are resistant to acid and corrosion.

  • This product comes with a 2-year warranty.
  • You can install the water heater both over and under the sink.
  • It has a very compact design for which it fits anywhere.
  • This product’s heating efficiency can rise to almost 99%.
  • The product material is corrosion-resistant.
  • This water heater comes with bare wire heating systems.
  • Costlier than other similar products.
  • There might be some leakage problems.
  • Breakers and wires are not included with the product.

5. Rheem Series RTEX-04 110V Point of Use Electric Tankless Water Heater

Rheem Series RTEX-04 110V Point of Use Electric Tankless Water Heater

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Rheem is a very popular water heater manufacturing company. Its main motto is hot water for everyone. Most of the products of this company are best sellers and have 5 years of warranty from the manufacturer.

This Rheem RTEX-04 model water heater weighs about 3 pounds and can get the water as hot as 105°F. The dimensions of this product are 2.75 x 5.88 x 10.88 inches (L*H*W). It also requires a 0. inch inlet water connection.


Features and Capabilities

The Rheem point of use tankless water heater is suitable for whole-house use. It can install it in hand sinks, kitchen sinks, showerheads, washing machines, dishwashers, bathtubs, you name it.

It is an on-demand instant tankless electric water heater that provides endless hot water as long as you have an electricity supply. And the astonishing part is, this machine can reach its efficiency up to 99.8%!

The design is stylish and ergonomic. It contains robust copper immersion heating parts with a brass top. These parts increase the durability of the product and are very easily replaceable.

The installation process is very easy. The water flow rate is 0.5-gallons per minute.

  • This product has an LED temperature display.
  • It has an on/off button by which you can easily turn on and off the machine.
  • You can use it anywhere in your indoor household.
  • The single shower minute and back to back shower counts are infinite.
  • Costlier than other similar products.

Buyer’s Guide

The price of a tankless water heater can vary. So at first decide on the budget. Secondly, think about the capacity. If your house uses more than 80 gallons of hot water every day, you need two tankless electric water heaters to cover up the demand.

Now you should know this. If you don’t have a good electricity supply, you should think twice before buying a tankless water heater.

A tankless electric water heater might not be good for you if the power outage is a phenomenon where you live. And definitely not if you live in a cold area.

Also, you should check the TDS count of the water in your house.

Because some hard water elements react to heat and that is not always a good thing. If the TDS count is too high, then get a water softener or descaler to solve the problem.

How does a Tankless (Gas/Electric) Water Heater Work?

As I have mentioned before, a tankless water heater can be of two types— electric water heaters and gas water heaters.

The gas tankless water heater has a title burner chamber where the gas is burnt. This transfers the energy into heat which raises the temperature.

This burner chamber is protected by a cover or shell that does not let the water get in touch but lets the heat transfer through. Because tankless water heaters need to heat the water instantly.

The burner has to raise the temperature very high on command.

An electric water heater uses a metal coil inside the heater. This metal coil is made of a material with high heat conductivity like copper and stainless steel.

By the flow of electricity, the coils heat up very quickly. Unlike the burner chamber of the gas water heater, this metal coil is dipped in the water. So the water gets heated by the process of both conduction and convection. It is basic thermodynamics!

Why Should You Buy a 110 Volt Tankless Water Heater?

A 110-volt tankless water heater is a very convenient product. So the right question should be why wouldn’t you buy a 110-volt tankless water heater? But jokes apart.

First of all, it is tankless. So its size and shape are very small. You can install and fit it anywhere you want— under the kitchen sink, over the false roof, you name it.

An electric tankless water heater is even smaller. It does not need any gas which decreases many hazard possibilities. As there is no gas needed, there is no use of vents or venting at all.

For most of these water heaters, you can install them both indoors and out the door. Now enough of the exterior features. A tankless water heater is also called an instant water heater or an on-demand water heater.

This water heater will only heat the water when you call for it. Other times, it does not.

This feature saves a deal of energy. This means an electric tankless water heater is eco-friendly and energy-saving both at the same time. Also, a tank water heater wastes water as well.

Some water heaters come with an LCD display monitor which shows the temperature of the hot water and the water flow rate. You can even control the temperature in some tankless electric water heaters.

So you can get lukewarm water and hot water from the same water heater.

You can install these water heaters anywhere you want— your home, vacation home, hospitals, college dorms, hotels, outdoor sinks, Jacuzzis and pool showers.

Also, these products are very long-lasting. If you use it with care, a tankless electric water heater can last up to 15 to 20 years. Now that will be worth your money.

Disadvantages of a Tankless Electric Water Heater

As things in this world have both advantages and disadvantages. And so does a tankless electric water heater. As this water heater does not have any tank or storage to store hot water, it will be a problem if there is a sudden power outage.

Because a tankless water heater cannot function without power.

Also, there is a thing called a cold water sandwich. Sometimes it is hard for a tankless water heater to maintain a constant temperature. So it is not uncommon to get cold water in the middle of a hot shower.

Another disadvantage is, that it is hard to get lukewarm water using a tankless water heater. Also, if one heater is responsible for multiple outlets, there might be some delay in getting the hot water.


A tankless electric heater does last for a long time. And the 110-volt water heaters are the most eco-friendly ones. But still, it is better to take care of the product from the beginning.

Use a good high-quality circuit breaker. And make sure the wire is coated and protected from water.

Electric water heaters do not cause any pollution as they do not use any gas. Moreover, if you use solar energy instead, you can say goodbye to the electric bill.

If that is not possible, to save more electricity bills, turn on the heater switch only when you need hot water.

At other times, keep it off. And try to use clean, green, and recyclable energy and make the world a long-lasting and better place.

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