5 Best 120 Volt Tankless Water Heater For Shower In 2020

This article will guide you through the best 120-volt tankless water heater for shower that you can buy in 2020. So if you are looking to buy some best small tankless water heaters then this article is for you.

tankless water heaters come in different sizes, there are some point-of-use water heaters that operates on a very low voltage of around 110 volts and there are some bigger units as well that are capable of heating the water for the entire household.

Before choosing any 120-volt tankless water heater you should be clear about the size of the water heater that you need for your shower. Our team has done detailed research on tankless water heaters and we have prepared this list of best 5 120 volt tankless water heaters.

Just go through the list on by one and choose the right product according to your needs.

5 Best 120 Volt Tankless Water Heater For Shower

Here is the list of best 120-volt small tankless water heaters that you can purchase for your bathroom shower. I suggest you to please read their features correctly before making any purchases.

1. Rheem 120V 1 Heating Chamber RTEX-04


This is a compact and stylish tankless water heater from Rheem that comes with digital temperature control from 80f to 140f. This is one of the smallest and portable tankless water heater in our list.

This water heater provides an efficiency rate of 99.8% that means all the electricity consumed by this water heater is used in heating the water and nothing gets wasted.

This tankless water heater features a copper immersion heating element that is best for wet bars and hand sinks. All in all, this is a must-have water heater for your shower. If you really want to enjoy a hot water shower at your home just install this one.

If you are looking for some more power and heat then opt for RTEX-06 model, it is a 240v water heater, double then this one.

2. Stiebel Eltron 233219 Mini Tank Electric Water Heater


I know you are looking for tankless after heaters here but believe me after you buy this water heater from Steibel Eltron, you will forget about them. If you want your water heater to be plugged in a standard electrical outlet then the best option is to always go with a tank-style water heater.

Stiebel Eltron Electric water heater comes in three different sizes that can be chosen according to the user needs. These water heater units don’t require any special type of electric wiring and they can be easily plugged in your regular electrical plugin that is off 120V.

You can opt for wither 2.5-gallon tank or you can go for a 6-gallon tank, it totally depends upon you. These water heaters are wall-mounted and all the wall mounting materials like brackets and screws are included inside the package. These water heaters come with 6 years of warranty for 100% satisfaction.

3. EcoSmart ECO 11 Electric Tankless Water Heater


This amazing tankless water heater from EcoSmart is ideal for small-sized apartments and flat. If you are looking for water that can provide you some low hot water then this is the right choice for you. This can be used for multiple applications according to the users need. You can either use it to provide hot water to 2 faucets at 1.3 GPM or you can use it for 2 faucets and 1 shower simultaneously at 2.7 GPM.

This is almost 50% less expensive than that of any water heater in its range. Before installing it at your home make sure that you have proper electrical space for the ECO 11. This is the best tankless water heater for a shower that can reduce your electric water heating needs very quickly.

The dimensions of this product is 6.5 x 13.5 x 10 inches, and it can save a lot of space in your bathroom. If you are replacing it with your old water heater then this can be a good choice as you will be left up with some extra space in your bathroom that can be used to store some other useful utilities.

If you are new to water heaters than I will recommend you to go for EcoSmart because it is a reputable brand and provides an amazing warranty on its products. According to past customer reviews, this brand provides amazing customer support after purchase and offers a lifetime warranty on the electronics, steel exchanger and the heating elements.

4. Rheem RTEX 13 Electric Tankless Water Heater


This is a tiny little tankless water heater unit from Rheem but you will be going to get amazed by knowing the potential of this machine. The dimensions of this unite is 9 x 10 x 5 inches that can be easily installed inside bathroom no matter what is the size of your bathroom is, it will get your job done within few mins.

You can not use it for multiple points at the same time but it does not affect its performance at all. With ana amazing flow rate of 4.0 GPM this tankless water heater will fulfill all your hot water shower requirements under your budget.

This is a bit costlier water heater as compared to other water heater units but it’s power and performance cover it up. You will be needing extra copper piping and some other electrical parts at the time of installation that will cost you some extra amount. All in all, if you want a power-packed performance then go for this one, customers are loving it already.

5. Ariston GL4S Electric Mini-Tank Water Heater


If you have a good taste in point-of-use water heater then this Ariston GL4S model is going to be a perfect choice for you. Using this unit is very simple, just plug it on the wall near your sink and shower and plug it in your normal electrical board, no special type of hardwiring required. It can hold 4 gallons of hot water at the faucet and it provides hot water very quickly and effectively.

It has a pre-installed sensing probe that maintains the proper temperature more accurately and can adjust the temperature more quickly. The company provides 6 years of warranty on heating exchanger and a one-year limited warranty on parts.

It is very small in size and only requires a space of 14×14 inches for installation. It is best for showers and sinks in the kitchen and bathroom faucets as well.

For more information on 120 volts tankless water heater for shower make sure you check out this video.



This was our best collection for 120-volt tankless water heater for shower, we have included only the best products that are available in the market. we always recommend you do your own research before purchasing any product.

If you think we have missed out something then don’t forget to tell us in the comment section below, we will reply to you as soon as possible.

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