Best 120 volt tankless water heater in 2022 – Reviews & Buyer Guide

The best 120-volt tankless water heater is a kind of heater which helps to provide hot water within a limited power. It can help you supply the demand for hot water even if there is a shortage of power. It can also be put in your home similarly to a regular water heater. With this, you can easily fulfill the hot water needs which remained unfulfilled previously.

These best 120-volt tankless water heaters were designed to work with a limited power supply. These are really useful in cases where there is a shortage of power supply. Mainly due to the reason that you already have a lot of appliances drawing on your electrical circuit. Leaving you with little to maneuver on, but these tankless water heaters can help you in that as they only use a limited amount of power. So you can fulfill your hot water demand for endless hot water with as limited power as needed. Furthermore, it can be also a stepping stone if you are going to have a tankless water heater in the future.

Quick Shopping Tips for Best 120 volt tankless water heater

Do you have a busy routine? Don’t check out all the ten products with reviews. Just consult our quick pick and go for what you like.

Budget Pick

Ecosmart POU 3.5 Kw is an excellent budget pick if you want limited hot water output backed by one of the leading brands in the tankless industry. It also got Self-modulation to ensure the highest energy efficiency and energy savings.

Best Pick

The best pick for a 120-volt tankless water heater is Takagi T-H3-DVLN. It gives the best value in terms of energy efficiency, performance, and affordability.

Staff Pick

Takagi T-KJR2 is a good choice for medium-sized families. It gives 6.5 GPM of hot water while ensuring safety with its various mechanisms to deal with any kind of environmental conditions. All this, at extremely affordable rates.

At a Glance:

Our Recomendation for Top Best 120 volt tankless water heaters

Water heaters are an essential part of every household; however, few people are aware of the various types of water heaters available. The first type is a storage tank-style water heater which can be electric or gas-powered. The tankless water heater, commonly referred to as an on-demand hot water heater, is another option. The heat pump water heater, often known as geothermal, is the final type. Today, we are going to discuss the top best 120-volt tankless water heater that is available in the market right now.

We have selected these 120-volt tankless water heaters based on your needs for budget, hot water output, efficiency, and the cost of the unit. Hence, you can be confident that these are tuned for excellence. So, you can be sure of the fact that these are optimized for Excellency. That being said, let’s just dive into the list of top 10 120 volt tankless water heaters.

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Best 120 volt electric tankless water heater
Budget Pick1. EcoSmart POU 3.5 tankless water heater
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Best 120-volt under sink tankless water heater
2. Camplux 3.5 kW Electric Tankless Water Heater
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Best 120-volt mini tankless water heater
3. Stiebel Eltron Mini 3 Tankless Water Heater
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Best 120-volt hot tankless water heater
4. Chronomite SR-30L Tankless Water Heater
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Best 120-volt indoor tankless water heater
5. Rinnai RL75IN  Tankless Water Heater
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Best 120-volt natural gas tankless water heater
Staff Pick6. Takagi TKJr2 gas tankless water heater
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Best 120-volt gas tankless water heater
Best Pick7. Takagi T-H3-DVNG  tankless water heater
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Best buy 120-volt tankless water heater
8. Rinnai V65IN tankless water heater
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Best rated 120-volt tankless water heater
9. Rinnai RL94IN tankless water heater
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1. EcoSmart POU 3.5 tankless water heater

Budget Pick

Best 120 volt electric tankless water heater

EcoSmart POU 3.5 tankless water heater
EcoSmart POU 3.5 tankless water heater

EcoSmart’s POU 3.5 tankless water heater allows for endless hot water and at the same time saves space, time, and reduces overall energy and water consumption. It is technologically advanced and can be used in homes as well as business environments. The product is easy to install and dependable.

However being a point of use, it can only facilitate a single fixture with a water flow rate of 0.5-1.5 GPM. This hot water capacity can vary based on incoming water temperature. That’s why with this unit, you can only facilitate sinks that have the lowest flow rate of 0.5 GPM with surety.

Features

Self-modulation technology

This amazing technology allows no standby losses and variable power inputs to match your demand for hot water.

50% saving on water heater bills

It uses advanced technology in heating water quickly while ensuring an endless supply of hot water. All this while eliminating standby losses, hence reducing your utility bill by half.

Aesthetic space-saving design

EcoSmart’s POU 3.5 tankless heater has a beautiful and sleek design that is also a space saver. Hence you can use it as home décor or so you can fit it anywhere under a sink or inside a cupboard.

Warranty

EcoSmart’s POU 3.5 tankless water heater is very reliable and durable and has a warranty of one year on the electronic, heat exchanger, and elements.

Certifications

ETL, UL, CSA listed.

Unit’s requirements

      This module needs the following requirements for proper functioning; 

  • The flow rate for activation is 0.25 GPM
  • Water pressure should be 25-150 psi
  • The voltage needed is 120V
  • Requires 3500 Watts to operate
  • Needed Amperage is 29A
  • One 30A breaker
  • Wiring Requires 10 AWG
  • Support water connection with ½ NPT

Specifications

  • Color: white
  • Weight: 4 pounds
  • Dimensions: 7 x 11 x 3 in

Pros

  • The energy efficiency of 98%
  • Compact and durable structure
  • Eco-friendly

Cons

  • Limited flow rate

Why you should buy this?

EcoSmart’s POU 3.5 tankless water heater is a water heater that gives endless hot water. By utilizing self-modulation technology, it save money on utility bills while its saving space design takes less than a single square foot of area. If you are looking for an eco-friendly solution for your hot water needs, then this is the best choice.


2. Camplux 3.5 kW Electric Tankless Water Heater

Best 120-volt under sink tankless water heater

Camplux 3.5 kW Electric Tankless Water Heater
Camplux 3.5 kW Electric Tankless Water Heater

Camplux 3.5 KW electric tankless water heater is a smart and compact designed product tankless water heater. It has a space-saving, energy-efficient, and long-lasting design. You can save water and power with this tankless water heater. It uses only 120 v/60 Hz input to produce hot water which can be used for your bathroom and kitchen sinks. This product has a much higher high efficiency and longer life than a traditional tankless water heater. This unit features a built-in thermostat that allows you to regulate the temperature of the water. It is extremely easy to install, just plug it into any electrical outlet.

Features

Reliable and durable

This product has a long life and durability; you can use it for years without getting into any trouble.

Multi-mounting option

This product is easy to carry and mount, there are two mounting options one being vertical and the other being upside down. This helps you make a water connection easily without any messiness caused by bending pipes to reach the tankless water heater connecting points. You won’t feel any difference by rotating it as its touch screen layout can also be rotated to match the direction. All this enables you to make a cleaner connection while ensuring ease of usability.

Smart and compact design

The Camplux Electric 3.5 kW Tankless Water Heater is tiny, lightweight, and space-saving. It can easily be placed in any tiny location.

Support wide temperature range

It supports a wide range of water temperatures, which means that you can still get hot water even if your locality has icy cold water available to you. However at a lower hot water output rate.

Warranty

This electric tankless water heater comes with 1-year warranty coverage for the unit.

Certified

ETL Approved, NSF approved

Unit’s requirements

      This module needs the following requirements for proper functioning; 

  • Circuit voltage of 120 Volt
  • Max. Inlet pressure is 145 Psi
  • Needs Power of 3500 watts
  • Requires a single 40A Breaker
  • Wiring Requires 10 AWG
  • ½ in NPT male fittings for water connection

Specifications

  • Color: White
  • Weight: 4.64 Pounds
  • Dimensions: 6W x 4.8H x 3D

Pros

  • Overheating and surge protection
  • Leakage protection
  • Self-Modulation
  • Smart and compact design

Cons

  • Require professional installation

Why you should buy this?

This tankless water heater is an excellent solution for you if you want to save space and money. It is a small object that may be fitted in any corner of a wall. No more bulky water storage type heaters anymore! Get an unlimited supply of hot water in compact size. It is quite easy to configure.


3. Stiebel Eltron Mini 3 Tankless Water Heater

Best 120-volt mini tankless water heater

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

Stiebel Eltron Mini 3-1is an electric tankless water heater that works on 120V. as it doesn’t require much power, it works as a point of use. It is eco-friendly and saves a lot of energy. The most eye-catching thing about it is its appealing design which adds more beauty to your home decor. Similarly, its space-saving design makes it easy to install it in any corner of your home.

This unit is also equipped with the self-modulation capability for more savings and a durable stainless steel build for a longer lifespan.

Self-Modulation

This tankless water heater uses smart technology and modulates its operational level depending on the demand hence ensuing maximum saving

Mounted Both vertical And Inverted

Another great thing about this unit is that it can be mounted both vertically and inverted which saves a lot of time to install on a horizontal or vertical surface.

Quiet Operations

This unit operates quietly so when operating, you won’t feel any noise from the device when enjoying your daily bath after work.

Overheating Protection

This Model is equipped with overheating protection that protects the unit from becoming hot even when it operates for a long time.

Space-Saving Design

The design is elegant and sophisticated. Its size makes it easy to fit in many places and its shape does not restrict its placement, allowing you to place it almost anywhere.

Warranty:

This unit offers 7-year leakage and a 3-year limited part warranty. Which is applicable only when the unit is installed by a licensed professional.

Certified:

Certified frustration-free, ANSI/UL certified, CSA Certified, and WQA certified

Unit’s requirements

      This module needs the following requirements for proper functioning; 

  • The Voltage Demand is 120V
  • power consumption is 3000Watts
  • Requires a 25A SP Breaker
  • Requires 2 wires of 12 AWG
  • Activation Flow Rate is 0.4 GPM
  • Amperage Drawn is 25A
  • Water pressure for normal operation is 30-150 Psi

Specifications

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

Pros

  • Compact and space-saving design
  • Unlimited hot water
  • Self-modulation
  • Multi mounting options
  • The energy efficiency of 99%

Cons

  • Limited hot water output capacity can facilitate the limited need of a single sink at a time

Why you should buy this?

This is a smart and trendy model that has been designed to provide hot water in a limited space. It offers an efficient service as its operational level changes depending on the demand. This means it operates less than when there is low demand hence saving you energy and money. All this, while ensuring peace in your house with its quiet operations.


4. Chronomite SR-30L Tankless Water Heater

Best 120-volt hot tankless water heater

Chronomite SR-30L Tankless Water Heater
Chronomite SR-30L Tankless Water Heater

The smallest tankless water heater that packs a punch. Chronomite SR-30L is the perfect solution for small house appliances such as lavatories and sinks. This size works well with low equivalent daily hot water (EDHW) usage. It also features two faucet adapters and a hose fitting for convenient installation. It can easily support a sink with its 0.65 GPM hot water capacity. It is perfect for tiny houses, RV’s, and mobile houses. It is also 99% Energy Efficient and certified for its ADA/UL compliance.

Features

Extremely compact with its space saver design

This water heater is extremely compact with its space-saver design. The installation will be a breeze since it does not require any venting. It can fit in even the tightest of spaces that are often left at the back or side of sinks, lavatories, showers, or appliances.

Constant hot water supply

Chronomite SR-30L ensures that you will get your daily dose of hot water supply. It is equipped with a 0.5 GPM flow rate capacity which provides unlimited hot water to all your limited needs like sinks.

Energy efficient

In addition to the endless hot water supply, this unit is also energy efficient. It consumes only 30-120 watts of electricity for its operation. Make sure it doesn’t become a burden on your electrical circuit.

Simple installation process

Chronomite SR-30L can easily be installed within minutes using compression fittings. This characteristic makes it an excellent alternative for plumbing newbies.

ADA/UL certified

Chronomite SR-30L is also UL listed which ensures it’s safe for usage. It has undergone tests that meet the requirements of ADA making it perfect for homes with elderlies.

Warranty

This amazing unit comes with a 12-month warranty

Certification

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

Unit’s requirements

      This module needs the following requirements for proper functioning; 

  • Battery-powered and requires 3600 Watts
  • The unit must be Hard Wired
  • Requires voltage of 120 Volt
  • Water connection size should be 0.25 inches MP
  • Require amp of 30 Amp

Specifications

  • Color: White
  • Weight: 4.54 pounds
  • Dimensions: 10W x 6.25H x 2.75D

Pros

  • Super high efficiency
  • Sleek and Appealing look
  • Smallest size tankless water heater
  • Easy to install

Cons

  • Lower flow rate

Why you should buy this?

This product is the perfect pick for you if affordability, energy efficiency, and size are your top priorities. This water heater give you highest energy efficiency at extremely affordable rates and can easily fit in beside any appliances hence making it best pick for tiny homes.


5. Rinnai RL75IN Tankless Water Heater

Best 120-volt indoor tankless water heater

Rinnai RL75iN Tankless Water Heater
Rinnai RL75iN Tankless Water Heater

The Rinnai RL75IN tankless water heater has 7.5 gallons per minute (GPM), which means it can sustain up to 4 showers or 2 showers and 1 dishwasher at the same time. It also happens to be 82% energy efficient, so you save money every month. The Rinnai RL75IN has an available Wifi-ready option that lets you monitor and control it from your smartphone, as well as keep track of its operation. However, what makes the Rinnai RL75IN stand out is that it is capable of recirculation with a separate accessory. Recirculation ensures warmer water for all your fixtures, at the first instance.

Features

Self-Modulation

Self-modulation operates at different power levels depending on the hot water demanded. This means that during low hot water demand times the unit will only operate at a minimum power level, which reduces gas consumption and utility bills.

Recirculation capable

The Rinnai RL75IN is equipped with Circ-Logic technology which ensures continuous hot water under any circumstance. By using the Rinnai RL75IN you will be able to get instant hot water from all fixtures with any wait time.

Wifi ready

The Rinnai RL75IN is Wifi ready, which means easily monitoring and controlling the unit from a smartphone, or tablet.

Warranty

In addition, the Rinnai RL75IN has a 12-year heat exchanger warranty, a 5-year warranty on all components, and a 1-year labor warranty.

Certified

SCAQMD compliance, AHRI certification, CSA certification

Unit’s requirements

      This module needs the following requirements for proper functioning; 

  • Minimum flow rate activation is 0.4 GPM
  • Operates at a water pressure of 50-150 psi
  • Circuit voltage of 120V
  • Water and gas connections of ¾ inches NPT are supported.
  • Minimum and Maximum BTU requirement is 15,000/199,000

Specifications

  • Color: silver metallic
  • Weight: 43.7 pounds
  • Dimensions: 23H x 14W x9D inches

Pros

  • Energy Star
  • Recirculation capable
  • Wifi control
  • High hot water output
  • Superior warranty

Cons

  • Expensive
  • May require upgrading the gas supply

Why you should buy this?

The Rinnai RL75IN comes industry’s highest warranty which should the confidence of the manufacturer in the product. You can use this device for the rest of your life without experiencing any performance concerns. While its energy efficiency and self-modulation work save you money in the long run. But leaving all else, its recirculation capability lets you enjoy instant hot water without any wait time throughout its lifetime.


6. Takagi TKJr2 gas tankless water heater

Staff Pick

Best 120-volt natural gas tankless water heater

Takagi T-KJr2-IN-NG Indoor Tankless Water Heater
Takagi T-KJr2-IN-NG Indoor Tankless Water Heater

Takagi is a Japanese global brand for tankless water heaters. Takagi TKJr2 gas tankless water heater is one of its famed products. It is affordable but has a sturdy and long-lasting construction. It’s a unit that’s been designed with a lot of safety features. It offers 6.6 GPM of hot water capacity and is energy-star approved. A Takagi TKJr2 gas tankless water heater is a product to look out for when you need a reliable tankless water heater.

Features:

Protection against frost, overheating, and surge

The Takagi TKJr2 gas tankless water heater has much safety features some of them are: protection against frost, overheating, and surge. This ensures that the unit will function well for a long time and that you will not have to worry about it needing to be fixed.

Low NOx

Additionally, the Takagi TKJr2 tankless gas water heater is eco-friendly. This unit comes with low NOx emission, this means that it does not emit any harmful gases to the atmosphere so you can be sure that your family will be safe when using it.

Troubleshoot with the help of error codes

If you have a Takagi TKJr2 gas tankless water heater it gives you an error code that helps you to find the problem as fast as possible. This is especially useful if you are unfamiliar with the upkeep of these units.

Warranty

The Takagi TKJr2 gas tankless water heater has a 10-year heat exchanger guarantee and a 5-year components warranty. However, it requires you to have the unit installed by a licensed professional.

Certified

Energy Star certified and UL certified.

Unit’s requirements

      This module needs the following requirements for proper functioning; 

  • Activation flow rate is 0.50 GPM
  • Water pressure supported between 25-150 psi
  • Required Voltage is 120V
  • Water and gas connection require 3/4” NPT
  • Venting Requires 4 inches category 3 Stainless steel venting (direct Vent)
  • Minimum/Maximum BTU required are 19,500/140,000

Specifications

  • Color: white
  • Weight: 38 pounds
  • Dimensions: 20.3 inches in height, 13.8 inches in width and 6.7 in depth

Pros

  • Freezing, overheating, and surge protection
  • Low NOx
  • Self-modulating
  • Error codes assistance

Cons

  • Not powerful enough to support the need of a big family in a colder climate

Why you should buy this?

The Takagi TKJr2 gas tankless water heater is a unit that has been built with safety mechanisms. It will ensure that you get value for your money in the long run because of its durability and functionality. With this unit, it ensures that you have saved on your gas bill while being able to enjoy a warm bath all year round.


7. Takagi T-H3-DVNG tankless water heater

Best Pick

Best 120-volt gas tankless water heater

Takagi T-H3-DV-N Condensing Tankless Water Heater
Takagi T-H3-DV-N Condensing Tankless Water Heater

Takagi T-H3-DVNG is a revolutionary condensing tankless water heater that offers the best value. It is a Direct Vent, Natural Gas tankless water heater which has the highest energy efficiency for gas tankless water heaters due to its condensing and self-modulation technology. It also ensures a healthier living environment as it emits less NOx than other conventional ones.

With Takagi T-H3-DVNG you can get one of the greatest hot water outputs of 10 GPM with a lower carbon footprint and at affordable rates.

Features:

High 10 GPM hot water capacity

It is a direct vent condensing gas tankless water heater that has the highest hot water capacity with 10 GPM, best for large families or buildings where there is a lot of use of appliances simultaneously.

Numerous safety mechanisms to face all kinds of environment

It ensures safe and healthy living as it has numerous safety mechanisms such as automatic overheating shut off, automatic gas shutoff, freeze protection, tip-over switch, etc.

Diagnostic system

It has a diagnostic system that helps to predict and find abnormalities before it occurs. This reduces the probability of issues and maintains working efficiency all the time.

Self-modulation

Thanks to its self-modulation feature it can always meet your demand in terms of output and performance while ensuring minimum energy costs.

Warranty

For your peace of mind, it comes with a 15-year heat exchanger warranty, a 5-year parts warranty, and a 1-year labor warranty.

Certified

AHRI Certified, Energy Star Certified, ANSI CSA Certified, SCAQMD cleared, and NSF cleared.

Unit’s requirements

      This module needs the following requirements for proper functioning; 

  • At least 0.40 GPM of flow,
  • 15-150 psi water pressure
  • A 120V power source
  • Water and gas connection (3/4″ NPT).
  • You also have the option to install condensate drains
  • You can go for 3-4 in. Schedule 40 PVC pipes or concentric venting.
  • Minimum/maximum BTU requirements for 15000 or 19900 units respectively!

Specifications

  • Color: white
  • Weight: 71 pounds
  • Dimensions: 24.88 inches in height, 17.75 inches in width, and 11.25 in-depth

Pros

  • 10 GPM flow rate
  • 93% energy efficient
  • Numerous safety mechanism
  • Industry’s leading warranty
  • The diagnostic system enables easier location and prevention of problems

Cons

  • Doesn’t have a recirculation capacity

Why you should buy this?

If you are looking for a tankless water heater for your big family that offers high hot water capacity then Takagi T-H3-DVNG is perfect for you. All this while ensuring the least water heating bill with its 93% energy efficiency.


8. Rinnai V65IN tankless water heater

Best buy 120-volt tankless water heater

Rinnai V65IN Tankless Water Heater
Rinnai V65IN Tankless Water Heater

The Rinnai V65IN is the perfect tankless water heater for anyone searching for reliability, functionality, and energy efficiency. It is a gas tankless water heater that delivers up to 6.5 gallons of hot water per minute and conserves energy as it heats only when necessary. This model is designed to be space-saving and compatible with a variety of locations within the home. With three levels of protection from possible damage due to scale, Rinnai has created a water heater with reliability as a priority.

Features:

Sensitive scale detection

The Rinnai V65IN provides worry-free operation thanks to its sensitive scale detection feature. This feature alerts the user when the scale build-up exceeds a certain level.

Error Code Indicator

The Rinnai V65IN includes a built-in error code indicator. Which let you know if any issue arises.

Frost protection

The Rinnai V65IN includes a frost protection feature. It detects when the changes in operating conditions signal high risk for freezing and protects the water heater.

Energy Star certified

The Rinnai V65IN is an Energy Star certified product. This certification proves its reliability and energy efficiency to consumers and housing associations alike, making it one of the most sought-after models on the market.

Warranty

The Rinnai V65IN is covered by a 10-year warranty against defects in materials and workmanship for the heat exchanger. While the 5-year warranty applies to the parts and 1-year labor for Rinnai.

Certified

AHRI Certified, Energy Star Certified, ANSI, and CSA Certified, SCAQMD Approved, NSF approved

Unit’s requirements

      This module needs the following requirements for proper functioning; 

  • The flow rate for activation is 0.40 GPM
  • Water pressure compatible between 20-150 psi
  • Voltage should be 120V
  • Minimum/Maximum Wattage required: 3.0 – 4.4kW
  • Water and gas connection supported with ¾ in. NPT
  • Venting Requirement: 5 inches, Concentric Venting
  • Minimum and Maximum BTU ranges from 10,300 to 150,000

Specifications

  • Color: White
  • Weight: 45.6 Pounds
  • Dimensions: 14 W: 23 H: 9 D in inches

Pros

  • Wifi capable
  • Enhanced scale detection
  • Certified for mobile homes
  • Frost protection
  • Durable and efficient

Cons

  • Limited power

Why you should buy this?

The Rinnai V65IN is an ideal water heater for anyone searching for a dependable and efficient unit. It has got all the basic features covered and comes with some of the rare features of wifi capability and Scale detection. Make sure you get the most user-friendly experience.


9. Rinnai RL94IN tankless water heater

Best rated 120-volt tankless water heater

Rinnai RL94eN Tankless Hot Water Heater
Rinnai RL94eN Tankless Hot Water Heater

Rinnai is probably the most well-known and reliable tankless water heater brand in the US. They’ve been around for quite a while and they’ve always stood up to our expectations. Here’s one of their most advanced noncondensing models for you. It has a maximum flow rate of 9.4 gallons per minute which is even enough for multiple showers at once or, in case you’d like to take a bath instead, it can even provide that. It can also be used safely with a standard electrical outlet, even if it’s only 120 Volts. While its safety mechanism doesn’t allow the temperature to get too high or too low and makes your tankless water heater shut down by itself in case of overheating.

Features

Circ logic

This means that it’ll be able to remember your routine needs based on the frequency of outlets used and configure the best path to ensure the quickest hot water. This may not look like much but it can save you a lot of energy when used with a recirculation pump.

Ultra-low NOx

As you probably know, some tankless water heaters release quite a lot of harmful gases. One such example is nitrogen oxide, which has been known to be hazardous for you and the environment alike. The RL94IN model, however, uses a special heat exchanger that can lower down NOx emissions by 60% or more.

Overheating, Freezing and Surge protection

Rinnai RL94IN comes with a lot of safety mechanisms to tackle all kinds of circumstances that are not in your control. Ensuring a longer lifespan and higher performance.

Wifi controllable

The unit is also equipped with Wi-Fi monitoring. That means that you can control the unit from your smartphone or tablet if you’re too lazy to go near the unit itself.

Warranty

A heat exchanger with a 12-year limited warranty, as well as a 5-year on components and a 1-year labor warranty, is included.

Certified

SCAQMD Certified, AHRI certified, ANSI certified, CSA Certified.

Unit’s requirements

      This module needs the following requirements for proper functioning; 

  • Minimum flow rate activation is 0.4 GPM
  • Operates at a water pressure of 20-150 psi
  • The circuital voltage of 120 volt
  • The minimum and maximum BTUs required is 10300 and 199000
  • Gas and water connections should be with ¾ in. NPT

Specifications

  • Color: Silver metallic
  • Weight: 44.2 pounds
  • Dimensions: 23.4H x 14W x9.6D inches

Pros

  • Wifi capability
  • 9.4 GPM capacity
  • Recirculation capable
  • Helpful error codes
  • Amazing warranty

Cons

  • Need the purchase of an external pump to take advantage of Circlogic Technology

Why you should buy this?

Rinnai RL94IN is probably one of the best models you can get if you’re willing to pay a bit more. It has all the features needed for modern times and it’ll surely last long enough so that your investment won’t go to waste. As far as reliability goes, Rinnai is known for this which is why they always come up on top.


Buyer Guide: Best 120v tankless water heater

Best 120-volt tankless water heaters are the most basic, least expensive type of water heater that can be purchased. These appliances are not often found in homes because they require a power source to function; specifically, they need 120 volts of electricity to heat your home’s hot water.

Estimating flow rate variation with temperature rise

The amount of hot water available from a tankless water heater can vary depending on the temperature of the incoming water supply. This is because a tankless water heater heats water on demand or the in the same instance as water is demanded. Hence with a larger difference between average groundwater temperature and the desired temperature, the lower water flow you can expect from the unit as the tankless water heater is limited by its power. That is why, before purchasing a tankless water heater, you should think about the flow rate volatility.

Tankless water heater type (Electric or Gas)

There are two types of tankless water heaters, either electric or gas-fueled appliances. Electric tankless water heaters use an electric heating element to heat up the water. While natural gas and propane are used to heat the water, in a gas-fueled tankless water heater.

While electric tankless water heaters are significantly less expensive than gas-fueled models, their power supply is limited. While Gas-fueled models were much more powerful they require a standard natural gas or propane connection.

Meeting Unit Requirements

Some building codes require that a new tankless water heater must be certified to meet certain safety and performance standards for the type of fuel it uses. Generally, gas-fueled models are subject to more stringent unit requirements than electric tankless water heaters. As a result, gas-fueled tankless water heaters cost more than electric models.

Also, it is important to consider that existing construction might make it difficult to install a tankless water heater of any type. For example, if your home does not have natural gas or propane service, you won’t be able to use a gas-fueled model. Also, if your home’s wiring and electricity sources can’t support a tankless water heater, you won’t be able to install an electric unit.

These are the basic things you should consider before buying a tankless water heater.

AwardDesignTankless heater reviewsRetailer
Best 120 volt electric tankless water heater
Budget Pick1. EcoSmart POU 3.5 tankless water heater
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Best 120-volt under sink tankless water heater
2. Camplux 3.5 kW Electric Tankless Water Heater
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Best 120-volt mini tankless water heater
3. Stiebel Eltron Mini 3 Tankless Water Heater
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Best 120-volt hot tankless water heater
4. Chronomite SR-30L Tankless Water Heater
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Best 120-volt indoor tankless water heater
5. Rinnai RL75IN  Tankless Water Heater
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Best 120-volt natural gas tankless water heater
Staff Pick6. Takagi TKJr2 gas tankless water heater
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Best 120-volt gas tankless water heater
Best Pick7. Takagi T-H3-DVNG  tankless water heater
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Best buy 120-volt tankless water heater
8. Rinnai V65IN tankless water heater
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Best rated 120-volt tankless water heater
9. Rinnai RL94IN tankless water heater
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Recommendation

You need a water heater, but you don’t know which one to get. There are so many different types of tankless water heaters on the market and they all have their own pros and cons. It’s hard to figure out which one is right for your needs.

We recommend that you take into account your family size, how much hot water you’ll be using at once, what is the inlet water temperature in your area, and what type of fuel source will work best in your home before deciding on a model. For example, if you’re looking for something small enough for a tiny house or small families we recommend Ecosmart POU 3.5. If you need something larger we suggest Takagi T-H3-DV-N Condensing tankless water heater which would be perfect for a larger family. While if your needs are around somewhere around the middle Takagi TKJr2 is a worthy choice.


Conclusion

There you have it, the best 120-volt tankless water heaters review. We hope you liked our article and may it have given you more direction on which tankless water heater to buy. Please do share your thoughts about it in the comment section below.

You can find more useful reviews like this on our website. You can also use them to find answers to other questions.


Frequently Asked Questions

Do tankless water heaters come in 110?

Yes. Although few in number, tankless water heaters do come in 110 volts. These tankless water heaters work as points of use and can support a single fixture with lower demand like a sink. Mainly, due to the fact that they have limited power.

Are tankless water heaters 120v?

Yes. A large number of tankless water heaters come in 120v. Most of the gas tankless water heater only requires 120v to operate and can support all your needs. While electric tankless water heaters also come in 120v they have low output as they are limited by their power. Hence, they can only operate as a point of use and provide hot water to a single fixture.

How many volts is a hot water heater?

Tankless water heaters come in 110v, 120v (as a point of use for electric powered tankless water heater and a whole house gas-powered tankless water heater) 220V and 240V for more powerful and whole-house electric powered tankless water heaters.

Do electric water heaters require 220?

Yes, most electric tankless water heaters are designed to run on 220 or 240 volts. This is because an electrical tankless water heater relies on electricity to heat the hot water. Hence, without sufficient, they cannot give worthwhile results.


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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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