Best 110 volt tankless water heater in 2022 – BestHeaterGuide

Because of the numerous advantages they provide, the best 110 volt tankless water heater is becoming increasingly popular. They are much more energy-efficient than traditional tank-style water heaters and can save you a lot of money in the long run. Additionally, they are smaller and more compact than traditional water heaters, making them a good choice for homeowners who are limited on space. Finally, they can help reduce your carbon footprint by minimizing the amount of energy used to heat your water.

However, they can also be disappointing at times, mostly due to the limited power and capability of the unit. It is not actually the fault of the tankless unit but a mistake in sizing the tankless water heater based upon your needs.

A 110-volt tankless water heater is extremely limited by power and capabilities. Such tankless water heaters generally can work best in warmer climates and may not be able to meet your showering needs. Such heaters are generally used for the low hot or warm water needs of sinks. Such heaters cannot support the need of the whole family but are generally used as a buffer to the existing water heater heating system. 

Follow our complete article to know all that you need to be prepared for while buying a best 110 volt tankless water heater

Quick Shopping Tips for Best 110 volt tankless water heater

1.    Budget Picks

Garosa 3000 watts is the most inexpensive unit in our list of 110-volt tankless water heaters. But that doesn’t imply it’s far behind the rest of the units on our list. It has a fairly durable build and is covered by a 1-year warranty. It’s also really simple to use and set up.

2.    Best Picks

For any homeowner, the Stiebel Eltron Mini 3-1 tankless water heater is the finest option. It has all the features one can find in other tankless units but with Stiebel Eltron mini 3-1, you can get those at a more affordable rate.

3.    Staff Picks

Siogreen IR30 is the best choice if durability and reliability are the foremost on your priority list. It can easily withstand scale deposits and corrosions and allow you to manually adjust the power of the unit to control energy consumption.

At a Glance:

Our recomendations for Best 110 volt tankless water heater

Looking for the best 110 volt tankless water heater? You’ve come to the right place. We’ve gathered some of the top-rated 110v models on the market to help you choose the one that’s perfect for your needs. Plus, we’ll give you some tips on how to choose the right size and how to get the most out of your new tankless water heater.

AwardDesignTankless Heater BrandsRetailer
Best mini 110 volt tankless water heater
Best Pick1. Stiebel Eltron Mini 3-1
Check Price
Best buy 110 volt tankless water heater
Staff Pick2. Siogreen IR30 tankless water heater
Check Price
Best cheap 110 volt tankless water heater
Budget Pick3. Garosa 3kw mini Electric tankless water heater
Check Price
Best instant flow 110 volt tankless water heater
4. Chronomite SR-15L tankless water heater
Check Price
Best 110 volt small tankless water heater
5. Ecosmart Pou 3.5 Point Of Use Electric Tankless Water Heater
Check Price
Best 110 volt under sink tankless water heater
6. Eastbuy 3kw tankless water
Check Price

1. Stiebel Eltron Mini 3-1

Best Pick

Best mini 110 volt tankless water heater

Stiebel Eltron 220816 Sink Tankless Electric Water Heater
Stiebel Eltron 220816 Sink Tankless Electric Water Heater

It is one of the most well-liked 110v tankless water heaters in today’s market. Although it is limited by its power, it does its work well and is known among the best sink tankless water heater. It also gives you an unlimited supply of hot water however, it cannot support larger demand of hot water in a smaller time duration such as shower, dishwasher, etc. So, don’t have such high hopes because they will only lead to future disappointment. Similarly, it is a point-of-use tankless water heater that can only support a single faucet for hot water demand.

Other than this it got a really neat design and its space-saving feature allows it to be mounted anywhere like under a sink, inside a cupboard, or some other corner of the house. While it is simpler design makes its installation easier than ever.

Features

Multiple mounting options

This tankless water heater can be installed both vertically and upside down which makes it easy to make clean and neat water connections without bending pipes many times to reach the tankless unit.

Noise-free working

This unit works silently without any noise giving you maximum comfort without any disturbance.

Easy installations

It features prewired pigtail design that makes such that you don’t have to open the unit to make a wire connection after a long battle with the user manual. All this makes the installations very easy as you only need to do hardwire these wires into your electrical panel with the recommended 25A breaker.

Overheating Protection

It also comes with a safety feature that protects you from getting hot water exceeding the safety level. This smart unit shuts itself to prevent water from getting too hot so that it does not bring damage to the unit and you.

Hot water Output

A tankless water heater tends to give different levels of hot water output based upon the incoming temperature or more precisely speaking, based on the temperature rise it has to bring to the incoming water temperature.

Hot water output0.5GPM0.66 GPM1.0 GPM
Temperature rise40°F30°F20°F

Warranty

Stiebel Eltron Mini 3-1 offers a 3-year limited warranty accompanied by a 7-year leak protection warranty. However, the product must be professionally installed.

Certified

Frustration-Free certified, WQA certified and ANSI/UL certified

Unit’s requirements

      This module needs the following requirements for proper functioning; 

  • Require a single breaker of 25A SP
  • Activation flow rate of 0.40 GPM
  • Amperage Drawn is 25A
  • Voltage Demand is 110 volt
  • Power demand is 3.0kw
  • Require 2 wires of 10 AWG
  • Operating Pressure is 30-150 Psi
  • Water connection support 1/8 OD Flex

Specifications

  • Color: White
  • Weight: 3.44 pounds
  • Dimensions (H x W x D): 6.5H x 7.5W x 3.75D

Pros

  • Inexpensive
  • Energy efficient
  • Higher output
  • Over-heating protects against scalding water
  • Silent while operating

Cons

  • Its looks may or may not suit your desires

Why you should buy this?

It is one the most effective tankless water heater that you can work with 110v. It is not made of shady or cheap material and can give higher output as well as is affordable. It is the best choice for anyone looking for a reliable 110v tankless water heater.


2. Siogreen IR30 tankless water heater

Staff Pick

Best buy 110 volt tankless water heater

Siogreen IR30 tankless water heater
Siogreen IR30 tankless water heater

Siogreen IR30 is a tankless water heater that can be used in all types of hard water. It has a unique technology that allows it to heat water without letting the scalp be accumulated in the unit. This feature makes this heater’s efficiency last for a longer duration and saves both time and money.

It is the smallest tankless water heater offered by SioGreen and is also the one that requires the least resources to operate. Its greatest advantage is that it is maintenance-free and hard water-resistant.

Features

Far infrared and quartz heating elements

The Siogreen IR30 is a tankless water heater that uses an advanced technology called “Far-infrared”. This technology uses infrared to heat the waves from far without coming in contact with the water directly. This is done by heating the quartz elements which pass the heat to water.

Hot water capacity

It is designed with a low-flow rate of only 0.5 liters per minute at a temperature rise of 45°F. This means that it can easily facilitate your sink hot water needs as long as the temperature difference between incoming water and your desired temperature is less than 45 degrees.

Hot water Output0.5 GPM0.65 GPM0.9 GPM
Temperature rise45°F35°F25°F

Compact design

It also features a compact design that doesn’t waste your precious living space, and can easily fit under a sink without creating any kind of a mess.

Warranty

A 2-year warranty is offered with this tankless water heater

Unit’s requirements

      This module needs the following requirements for proper functioning; 

  • Operation pressure is above 15 and below 150Psi
  • Requires a single wire of 10 AWG
  • Water connections fit with ½ NPST
  • Current drawn is 28.3A
  • Power output is 3.4kW
  • Needs a 30A SP Breaker to be attached with it
  • Maximum output is 1.0 GPM

Specifications

  • Color: White
  • Weight:5 pounds
  • Dimensions (H x W x D): 12.4W x 14H x 4.25D inches

Pros

  • Good for hard water
  • Maintenance free
  • Inexpensive
  • Leakage protection

Cons

  • It requires you to install and repair by the dedicated service provide or else your warranty can become void.

Why you should buy this?

It ranks near the top of our list of 110-volt tankless water heaters. It also receives bonus points for being corrosion-resistant and requires low-maintenance. Hence, you don’t have to be on the tip of your toe for keeping tabs on the maintenance schedule.


3. Garosa 3kw mini Electric tankless water heater

Budget Pick

Best cheap 110 volt tankless water heater

Garosa 3kw mini Electric tankless water heater
Garosa 3kw mini Electric tankless water heater

Garosa 3 kW is a great tankless water heater that works on 110 volts. It has a really compact structure, measuring around the size of a smartphone. Now, while researching we came across a lot of bad reviews about it but most of them can’t be said to be true as one can’t expect an elementary school kid to solve university-level questions. Similarly, one can’t expect this tankless heater to provide you with enough hot water for a shower. It is designed for low-flow outlets like a kitchen or bathroom sink.

Features

Over-temperature protection

Although one may expect this tankless water heater to be flimsy it is no way near that. It is designed with over-temperature protection that prevents an abnormal hike in the water temperature. However, once the over-temperature switch is initiated, you have to reset it by removing the black cover to get it to start working again.

Simple installation

It has the simplest installation one can ever find in the tankless water heater. All you have to do now is connect it to the water supply with the appropriate hoses. In addition, you don’t need any plumber or electrician for this as it is powered by a plug and doesn’t require hardwiring the unit. Just plug it in and you are good to go.

Simple error codes

Again by no means, it is a flimsy unit as it is designed with an error code to let you know about some of the common issues it may run into from time to time. All you need to do is find the user manual and make proper adjustments to let it run without any problem.

Hot water output

Hot water Output0.5 GPM0.66 GPM0.8 GPM
Temperature Rise45°F35°F25°F

Warranty

Garosa mini electric tankless water heater comes with a 1-year warranty

Unit’s requirements

      This module needs the following requirements for proper functioning; 

  • This unit works on 110 volts
  • Power is 3000 watts
  • Wiring can use 8-10 AWG wire
  • Water connection support G½ fittings
  • Current demand is 25-32A

Specifications

  • Color: Black/Red
  • Weight: ‎2.46 pounds
  • Dimensions (H x W x D): 7.87 x 4.13 x 2.55 inches

Pros

  • Compact size can easily fit under the sink
  • Over-temperature protection
  • Error codes for problem identification
  • Inexpensive
  • Easy to install

Cons

  • It doesn’t allow you to adjust the water temperature to ones desires

Why you should buy this?

A really good selection for a 110 volt tankless water heater that is both durable as well as easy to use. It smaller size and look is kind of cute but it get the job done. It doesn’t bring lot of temperature rise hence cannot make icy water into hot water but can bring it to a more bearable level.


4. Chronomite SR-15L tankless water heater

Best instant flow 110 volt tankless water heater

Chronomite SR-30L/120 volts Electric Tankless Water Heater
Chronomite SR-30L/120 volts Electric Tankless Water Heater

Chronomite SR-15L water heater is one of the smallest tankless water heaters available in the market. It’s extremely compact, saving space and energy-efficient units even when compared to other tankless water heaters. It has a retro look that looks stunningly beautiful. Chronomite SR-15L saves you from the headache of setting up a regular water heater because it is simple to install.

Features

Endless supply of hot water

With the Chronomite SR-15L, you will be able to enjoy unlimited hot water although in a limited capacity of sink use.

Easy installations

Its innovative design makes installation easy for both DIY professionals as well as amateurs who are looking for a hassle-free installation option. All you need to do is hardwire this unit to electrical service.

Warranty

This amazing unit comes with a 12-month warranty

Certification

ADA Compliant, ETL Listed, IAPMO Listed, UL Listed, CSA Listed

Unit’s requirements

      This module needs the following requirements for proper functioning; 

  • This unit operates on 110 volt
  • Battery powered and requires 3600 Watts
  • This unit requires hardwiring the wires into electrical service directly.
  • Water connection size should be 0.25 inches MP
  • Current demand is 30 Amp

Specifications

  • Color: White
  • Weight: 4.54 pounds
  • Dimensions (H x W x D): 2.75D x 6.25H x 10W in inches

Pros

  • Extreme energy efficiency
  • Retro and simple design
  • Smallest size tankless water heater
  • Simple installation

Cons

  • Limited flow rate can only support a single outlet like sink.

Why you should buy this?

If you are looking for a compact, space-saving, energy efficient tankless water heater for your kitchen or bathroom sink that is extremely affordable, Chronomite SR-15L is perfect for you. The unit has simple installation and all you need to do is hardwire the unit for it to work.


5. Ecosmart Pou 3.5 Point Of Use Electric Tankless Water Heater

Best 110 volt small tankless water heater

Ecosmart POU 3.5 Kw
Ecosmart POU 3.5 Kw

Over the past few years, self-modulating water heaters have been gaining popularity and no doubt they are a great technological advancement in the world of heating water. Ecosmart POU 3.5 is such a smart tankless water heater. It is rated for 120v but can operate with 110v also. This tankless unit is beneficial for homes with low-flow toilets or sinks that can support their hot water needs endlessly. It does all this and will not consume as much electricity and will also save you money on your utility bills.

Features

Self-modulation

Ecosmart POU 3.5 kW tankless water heaters have a built-in self-modulation system that helps to reduce energy consumption by up to 80%. This system can automatically adjust the power of the heating element based on the water demand to reach the highest efficiency.

On-demand operation

It is a point-of-use unit that can facilitate a single fixture like a sink. With its on-demand operation, it will only operate when the demand for water arises. You can acquire an unending supply of hot water using this mechanism as long as you don’t surpass its hot water capacity.

Hot water Output

Hot water Output0.5 GPM1.0 GPM1.5 GPM
Temperature rise47.8°F23.9°F16°F

Warranty

Ecosmart presents a 1-year warranty for Ecosmart POU 3.5kW.

Certified

This unit is listed with ETL and UL.

Unit’s requirements

      This module needs the following requirements for proper functioning; 

  • Operates on 110 volts
  • Activates at a flow rate of 0.25 GPM
  • Heating power is 3500 watts
  • It requires a 30A breaker to be installed with it.
  • Current demand is 29A
  • Wire size to be used with it is 10 AWG
  • Water connections fit right with ½ in. NPT

Specifications

  • Color: White
  • Weight: 4 Pounds
  • Dimensions (H x W x D): 6 x 3.7 x 9.2 inches

Pros

  • Auto-Modulation
  • Durable build
  • Small size
  • Results in higher savings on bills

Cons

  • No way to adjust water temperature manually

Why you should buy this?

Ecosmart POU 3.5 kW tankless water heater is a smart tankless water heater that provides an optimal solution for the home and business owners who want to save money on their heating bills without sacrificing quality of their water. It is a simple, elegant and intelligent device that will be an excellent addition to any home.


6. Eastbuy 3kw tankless water

Best 110 volt under sink tankless water heater

Eastbuy 3kw tankless water
Eastbuy 3kw tankless water

The Eastbuy 3kW is the next one on our list of 110-volt tankless water heaters. It is quite similar to Garosa 3kW that is mentioned above in our list. Technically, you will find a lot of cheap copies 110-volt tankless water heaters quite similar to these but they are not worth the price. We found Garosa and Eastbury to be superior to the others.

The one thing that makes it stand out from the Garosa 3kW is its self-adjustment feature.

Features

Self-Adjustment

The best feature about this tankless water heater is that it comes with a self-adjustment feature that uses power as needed. This means that it doesn’t necessarily have to operate at a single setting for all kinds of hot water demands but regulates its operational level as needed.

Energy Efficient

This tankless water heater is extremely energy efficient both tanks to it being an electric unit as well as it being a self-adjusting tankless water heater. It is 99.89% energy efficient and gives you the benefit of saving on your bills.

Durable Waterproof Construction

Being an undersink tankless water heater, it is bound to come in contact with splashes of water being sprinkled on it from time to time. But you don’t worry about it running into a problem thanks to its waterproof build.

Error Codes

It is designed with error codes that let you know about the problem that it might have run into.

Warranty

This tankless heater comes with a 1-month warranty.

Certified

IPX4 certified

Unit’s requirements

      This module needs the following requirements for proper functioning; 

  • It comes with a 3 feet cord
  • Voltage demand is 110v
  • Power output is 3000Watts
  • Current demand is 25-32A
  • Wire is 10 AWG
  • Water connections are compatible with G½ pipes
  • Recommended working pressure for this unit is 0.04 ~ 0.06MPa

Specifications

  • Color: Black/Pink
  • Weight: 2.05 pound
  • Dimensions (H x W x D): 9.69 x 6.3 x 5.67 in inches

Pros

  • Self-adjusting
  • Water proof build
  • Energy efficient
  • Inexpensive

Cons

  • Not as durable as claimed

Why you should buy this?

It is fairly good and cheaper choice as a tankless water heater for sink use. However, if you are looking for this unit for shower use or any other higher flow fixture, than you are bound to be disappointed. Conversely, it is a good one for sink use or toilet use.


Buyer Guide for Best 110 volt tankless water heater

Tankless water heaters are generally known for their endless hot water supply and energy-saving abilities compared to conventional water heaters, but this doesn’t mean that they don’t have their limits. Flow rate is one of the primary limiting factors.

1.    Flow Rate

A flow rate is a measurement of the amount of water that passes through a given point in a unit of time. In a tankless water heater, it is used to refer to the amount of hot water that a tankless water heater can output in a minute. It is also known as GPM or Gallons per Minute which reflects the hot water output of tankless water heater.

2.    Temperature rise

The other limiting factor is temperature rise. A temperature rise is an increase in temperature a tankless water heater can bring to the incoming water temperature. It refers to a tankless water heater’s real output capacity, which is determined by how much water it will produce, in response to your demand. Unlike a tank water heater, which has preheated water held in the tank, a tankless water heater does not have preheated water. Hence, in colder climates, you can see an even lower hot water output to a higher temperature rise needed to bring the incoming water to the desired temperature.

3.    Warranty

Tankless water heaters are extremely efficient have a lifespan of 15-20 years but this doesn’t mean that they won’t run into any kind of problem throughout your life. In reality, most tankless water heaters run into problems from time to time that where the importance of the warranty comes into place. Most tankless water heater manufacturers give a warranty on heating elements while some of the best ones even come with parts and labor cost warranty.

AwardDesignTankless Heater BrandsRetailer
Best mini 110 volt tankless water heater
Best Pick1. Stiebel Eltron Mini 3-1
Check Price
Best buy 110 volt tankless water heater
Staff Pick2. Siogreen IR30 tankless water heater
Check Price
Best cheap 110 volt tankless water heater
Budget Pick3. Garosa 3kw mini Electric tankless water heater
Check Price
Best instant flow 110 volt tankless water heater
4. Chronomite SR-15L tankless water heater
Check Price
Best 110 volt small tankless water heater
5. Ecosmart Pou 3.5 Point Of Use Electric Tankless Water Heater
Check Price
Best 110 volt under sink tankless water heater
6. Eastbuy 3kw tankless water
Check Price

Recommendation

We recommend you to buy Stiebel Eltron mini 3-1 if you are looking for the best 110 volt tankless water heater. It c tied with our second best choice of Siogreen Ir30 but its great warranty and cheaper price paved the way to its first place in our list.


Conclusion

Locating a decent 110-volt tankless water heater is like finding a needle in a haystack. Primarily because they are not designed for it and the low demand for them made it so that lots of manufacturers don’t give much consideration to them while manufacturing.  Still, to make this easy for you, we went ahead and made a list of the best 110 volt tankless water heater in the markets. Hopefully, it has helped you in finding what you wanted.


Frequently Asked Questions

Do tankless water heaters come in 110?

Yes, tankless water heaters do come in the 110-volt units but only a few of them are worthy of their price.

What brand of tankless water heater is the most reliable?

Rinnai is the most trustworthy brand among the most tankless water heaters. Especially for gas tankless water heaters as it doesn’t manufacture an electric tankless water heater. Ecosmart is considered the most worthy brand in terms of electric tankless water heaters.

How do you wire a 120-volt tankless water heater?

Most of the 120-volt electric tankless water heater requires hardwiring with a 20-30Amp breaker while gas tankless water heater only needs electricity to power their circuit and doesn’t require the use of a breaker of any kind.

What voltage is required for a tankless water heater?

Gas tankless water heaters require 120 volts to operate while most electric tankless water heaters require 220 volt or 240 volts to operate and a minority of the point of use electric tankless water heaters do operate on 110-120 volts.


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Emma Johnson
By Emma Johnson

Hi, This is Emma. Author at “BestHeaterGuide.com”. I am a graduate of Mechanical Engineering. Currently researching on heating technology. However, I have learned many home heating techniques and still learning home heating technology. And I love to share my research and reviews.

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