Best Tankless Water Heater 2020 Reviews | Buyer Guide

Best Tankless Water Heaters

Tankless water heaters are a great discovery for the people who feel lethargic to take baths and excuses to avoid home chores in winter. A weather-friendly and adjustable product which is of great benefit because you can easily accommodate it anywhere than to muddle up your whole house. Tankless water heaters gained popularity in numbered days as they are slimmer than the traditional ones and you do not need to store water as in traditional ones.

One of the most noticeable advantages of a Tankless water heater is that you will take out hot water from it only when needed. You would tap the faucet and get the desired water. This water can be used for many purposes including dishwashing, clothes washing, and other house chores. On the other hand, while comparing it with storage tank heaters, we notice that the traditional type heaters heat water even when there is no demand.

Tankless water heaters are great and trendy. In this section, we will select the top-rated brands with all their advantages and disadvantages, the weight of products and their prices to make it comprehendible for you so that you can pick the best tankless water heater for your selves.

Tankless Water Heaters

Images

Fuel Types

Weight

Price

Ecosmart ECO 18 Electric Tankless 

Electric

11.25 lbs. 

Rheem 240 V2 RTEX-13 Residential

Electric

8.5 lbs.

Stiebel Eltron Tempra 24

Electric

15.4 lbs.

Rinnai RL75in

Gas

45.6 lbs.

Eccotemp 45hi-ng

Gas

27.3 lbs.

Bosch 940 ES_NG Tankless Water Heaters

Gas

67 lbs.

Noritz NRCP 1112 Tankless Water Heater

Gas

81 lbs.

Marey GA10LPG

Gas

21 lbs.

Atmor AT-D18 TP AZ Tankless Water Heater

Gas

17 lbs.

Takagi Tankless Water Heater

Gas

38lbs.


Best Tankless Water Heaters List and Reviews

Here are the top tankless water heaters with their specs and flaws

1.  Eco Smart Eco 18 Electric Tankless Water Heater:

Ecosmart ECO 18 Electric Tankless
Ecosmart ECO 18 Electric Tankless

Eco smart Eco 18 tankless water heater is one of the most popular and admired products of the market. This weather-friendly and demanding product is equipped with the features that captivate the eyes of the buyer. It comes with the facility of a lifetime warranty for residential use and saves up to 60% of your bills. With this product, you will never run out of hot water.

Though it provides lifetime warranty but under some conditions. You need a licensed plumber to install it. Moreover, you must note the name of the plumber with his license number and contact number. This information card must be sent to the company or you will not qualify the warranty.

Features

Desired Flow Of Water:                                                                           

This product works with a water temperature of all types but the colder the water is, the more time product will take in the output of gallons per minute. The ideal temperature of it is 62 degrees and with this, it will produce up to 2.5 gallons of water in a minute and provides the best to one family.

Indoor installation:

EcoSmart ECO 18 is designed for indoor installation and you have to protect it from weather elements. To install this product, you will need to hire a professional plumber to install it. You will need to have all parts and tools in hand before installing it. This includes 125 amp electrical panel, 60 amp double pole breaker, and various wires and cables.

Temperature control:

It has digital temperature control and provides you to increase the water temperature in 1- degree increment. You can set the temperature according to your needs and desire.

Energy Savings:

EcoSmart ECO 18 tankless water heater saves up to 60% of energy. You will consume only the needed energy.

Pros
    • Lifetime warranty
    • Stylish Design
    • Affordable
    • Space and energy saver
Cons
    • Restrict to indoor installation
    •  Poor warranty terms

2. Rheem 240 V2 RTEX-13 Residential Tankless Water Heater:

Rheem 240 V2 RTEX-13 Residential
Rheem 240 V2 RTEX-13 Residential

 A US-based brand keeping 100 years of experience occupying the position in one of the demand-type of tankless water heaters. Rheem serves the best to its users and provides hot water uninterruptedly. It looks trendy and stylish and is at a mid-range price. It provides its users with 5 years of warranty so if you find anything troublesome, you can contact the company.

Features

Flawless Flow:

You can get the desired amount of water as much as you want without any restriction. You can get around 5 gallons of water in a minute if the temperature of the water is 34-35 degrees Fahrenheit.

Temperature Friendly:

To make the water according to your taste, it has an eternal thermostatic control with adjustable design and stylish led display by using which, you can adjust the temperature of your water.

Easy Installation:

You can easily install it by understanding the manual if you are well-equipped and it will take you two to three hours only. But if you hire a professional to do so, it will take him less time. The installation is quite simple.

Energy Efficient:

This tankless water heater is 99.8% energy efficient as it makes sure that there is no heat loss when you are in the process of using it and conserves the electricity.

Budget-Friendly:

This Rheem unit is a budget-friendly product that keeps your money safe. The affordable price made it pretty friendly for the user. Moreover, it is 99.8% energy efficient which helps in lowering down your electricity bills.

Small Families Friendly:

This product supports one small family and a few people living in a flat or studio. They can enjoy limitless hot water.

Pros
    • User friendly
    • Budget friendly
    • Attractive design
    • Adjustable size
Cons
    • Not suitable for big families
    • A little bit of temperature and flow issue

3.  Stiebel Eltron Tempra 24 Tankless Water Heater:

Stiebel Eltron Tempra 24

There are many products in the market when you consider them and they are high-priced. Now the main question arises that are they worth the hype or not? Stiebel Eltron Tempra 24 tankless water heater is one of the products that are liked by the customers when they buy and use it.

Features

Self-modulating energy technology:

This product continuously monitors the temperature and the water flows it produces. There are sensors that serve their readings into the unit’s proprietary. It makes sure of the least energy use and keeps your bills low.

Unlimited Supply of Water:

Stiebel Tankless Water Heaters respond to your desires the way you want and they provide you with unlimited water even if there are severing faucets and showering running at the same time.

Adjustable Size:

It is of better size than your previous one and occupies less place. You can place it anywhere and the most it will do is to save the place that was taken previously. It has a pretty adjustable size.

Attractive designs:

With its sleek and slim design, it does attract the eyes of buyers. It comes in an attractive and shiny design.

Innate Temperature Display:

It has a highly responsive dial selector that allows you to set the temperature between 85-130 and 140 Degrees Fahrenheit.

Energy Saver:

In comparison with other heaters, this product use 15 to 20% less energy which saves 80% to 75% of your electricity bills and eventually saves your hard-earned money.

Pros
    • Efficient flow rate
    • Excellent performance
    • Easy installation
    • Energy saver

 

Cons
    • Expensive but worth the hype.

4. Rinnai RL75in Tankless Water Heater:

Rinnai RL75in
Rinnai RL75in

The Rinnai RL75in tankless water heater is an in-door product and energy-efficient product which nearly provides an endless water supply. In addition, it provides leak detection to its users. It also offers 12 years of warranty for the heat exchanger, 5 year part, and 1-year labor. It also saves 82% of energy, making sure that your money does not get wasted.

Features

Limitless Water Flow:

This RL75in has a gas fuel type that provides a constant flow of water when it passes through the heat exchanger. It provides up to 7.5 gallons of water per minute which is a pretty awesome thing. It can serve water to four fixtures at the same time be it two showers, laundry, and other home chores such as dishwashing.

Design:

This product is designed to place on a wall and has an accurate measurement of 14 x 9.3 x 23 inches and has a sleek design.

Leak detection:

If there comes any problem, the leak detection feature of RL75in will automatically turn off all the valves and will be helping to avert damage. Moreover, it has a thermometer inside which detects the temperature. It also provides anti-frost protection which will help to prevent water pipes from bursting.

Installation:

It requires professional installation and an amateur can ruin and exploit it. You need to hire a highly professional person in order to get it done.

Adjustable Size:

Having a small size and containing the quality to get fit in anywhere, you can easily install this product in any of your rooms or any place you desire to. It would not take much space and will be fit easily.

Pros
    • 82% energy efficient
    • Long Warranty
    • 7.5 gallons of water per minute
Cons
    • Takes a minute for heating the water

5. Eccotemp 45HI Tankless Water Heater:

Eccotemp 45hi-ng
Eccotemp 45hi-ng

This product offers to give a great flow of water to the users and has a pretty silver white and sleek structure. It meets quite many needs of its consumers. This product meets with all the hot-water needs by providing water to a home or an apartment with one or two bathrooms and other smaller applications.

In addition to all these features, it has a 5-year warranty on pieces and 10 years warranty on the heat exchanger. We only wish, it was not big in size.

Features

The flow of Water:

It serves 6.8 gallons of water per minute to the user and this is pretty awesome as you can use a marvelous flow of water that can be useful for many purposes.

Small Homes Friendly:

An ideal product for a small family, this can meet the need for water usage in 1-2 bathrooms and you can open 2 faucets at the same time.

Energy Saver:

It makes sure the fact that no water should be wasted and lessens 82% of your electricity bills.

Pros
    • Saves energy
    • 8 GPM
    • Indoor
Cons
    • Big in size
    • Weighs 42.8 pounds

6. Bosch Therm 940 ES-NG Tankless Water Heater:

Bosch 940 ES_NG Tankless Water Heaters
Bosch 940 ES_NG Tankless Water Heaters

This brand is named after the man Robert Bosch in Germany. This brand promises to meet the needs of its clients. Bosch is a friendly name in the water heaters market offering you a warranty of 14 to 15 years and is one of the most hyped products. Let’s have a look at its features.

Features

Modulating Power:

The built-in modulating water valves and gas burners prevent the heater from burning and catching fire. This feature increases the temperature’s stability and the comfort for you to use it.

Indoor Installation:

The Therm 940 ES is an indoor model that require to get fit inside the home and weighs 67 pounds which is pretty adjustable.

Comfort Flow Technology:

It offers a smooth flow of water of 9.4 GPM when the temperature of the water is 35 degrees Fahrenheit and 6.0 GPM at 55 Degrees Fahrenheit. This model can run more than one shower along with other home appliances, providing all of them hot water at the same time.

Safety:

This product offers safety measures and has built-in freeze protection technology which allows you to know when the temperature is approaching.

Pros
    • Indoor installation
    • Large flow rate
    • Long warranty
    • Safety measures available
Cons
    • Takes time in heating up water for large use
    • Maintenance is costly

7. Noritz NRCP1112 Tankless Water Heater:

Noritz NRCP 1112 Tankless Water Heater
Noritz NRCP 1112 Tankless Water Heater

This brand has been serving its customers for 60 years and has mixed reviews. Weighing 81lbs, Noritz’s Tankless Water Heater offers a fuel system of gas and comfortable use for the customers with 10 years warranty to its customers.

Features

High Flow Rate:

This powerful product provides up-to about 11.1 GPM and is ranked among one of the most sustaining heaters for domestic uses. It supports 2-3 bathrooms at the same time.

Recirculation Technology:

This heater has a built-in recirculation pump that can be used in both internal and external pipes which ultimately results in fast hot water delivery and energy consumption.

Advanced Control Panel:

This product is equipped with an advanced control panel consisting of several functional buttons, LCD Display that helps to control and adjusts the time, temperature, water flow and can program the recirculation technology.

Adjustable Design:

This product is adjustable to any place and does not occupy much space.

Venting:

This product is designed to have an easy installation with two pipes direct vent systems. Through one pipe, it takes air from outside and with the help of second, it gets it from indoors.

Pros
    • Advanced control panel
    • Long warranty
    • Easy venting
Cons
    • Customers complain about water supply

8. Atmor AT-D18 TP AZ Tankless Water Heaters:

Atmor AT-D18 TP AZ Tankless Water Heater
Atmor AT-D18 TP AZ Tankless Water Heater

This product is quite better as it is compact, easy to operate, and provides good water flow in comparison with its price as reviewed by customers. It offers you with 7 years leakage warranty and 2 years parts exchange warranty.

Features

Water capacity:

This product provides a maximum of 3.7 gallons per minute when the temperature is warmer and when it drops under 37 degrees Fahrenheit, the flow rate drops at 1.9 gallons per minute.

Energy Saving:

This model reduces your electric bills up-to 50% as it turns on only when needed. With its self-modulating unit, it turns the product on when there is a demand for hot water.

Installation:

With its slim and sleek design, it can be installed inside or outside as it needs no venting. The only thing you need to make sure is that it should be placed near your main voltage board that should meet the requirement of 240 V.

Pros
    • Easy installation
    • Good water flow
Cons
    • Water flowrate is not good for big households.

9. Marey GA10LP Tankless Water Heater:

Marey GA10LPG
Marey GA10LPG

This model saves space and energy and is easy to install. Weighing only 21 pounds, this product is pretty light and adjustable. It also saves your electricity bills.

Features:

Water Flow:

Marey GA10LP only needs low-level water pressure for running with the flow of 3.1 GPM and is a good choice for any household.

Energy Saving:

With its efficient water flow, it also provides you with 60% savings of water that will help you save your electricity bills.

2D Battery Cell:

It uses 2D cell batteries for ignition which means that the heater does not need electricity for running. Let’s say that you are out of electricity then it uses a backup plan.

Easy installation:

It comes with a manual by using which, you can fix and install a water heater on your own. The manual instructions are easy to comprehend.

Control Panel:

Marey GA10LP has a control panel with the three dials features through which, you can adjust water, gas, and temperature.

Pros
    • 2D batteries ignition
    • Easy to install
    • Controlled knobs for three functions
Cons
    • The temperature may fluctuate
    • No vent pipes

10. Takagi T-KJR2-IN-NG Indoor Tankless Water Heater:

Takagi Tankless Water Heater
Takagi Tankless Water Heater

When you desire for a budget-friendly product with good features, Takagi heaters are a must go for you. This is specially designed for small homes where less flow is required with 10 years of warranty.

Features

Maximum Flow Rate:

The maximum flow rate for this product is 6.6 gallons per minute. It is designed for small homes or apartments where it can deliver water for one or two bathrooms specifically in winters where the temperature follows 70 degrees Fahrenheit.

Temperature Control:

It has automatic temperature control which turns off when the unit is overheating. This way, it keeps the safety measures alive.

Installation:

Takagi T-KJR2-IN-NG comes with a step by step manual instructions that makes installation quite easy. You can do the installation on your own and can save you money.

Pros
    • Long lasting
    • Easy installation
    • 10 years warranty
    • Affordable
Cons
    • Not suitable for large homes
    • Makes noise

Benefits of Tankless Water Heaters?

Tankless water heaters also are known as demand-type heaters are the ones that provide hot water when needed. You can get gallons of hot water within a minute for home chores and bathing. They also lower your electricity bills.

 How do they work?

Tankless water heaters heat water without the use of storing it in a tank. When a hot water tap is turned on and the cold water passes through the pipe, the hot water comes out of the tap and delivers a constant supply for your convenience.

Basically, a tankless water heater provides warm water at 3-5 gallons which ultimately means 7.6-15.3 liters of water per minute. Most of the time, you turn on multiple showers, dishwashers, and laundry at the same time which can push the heater to its limits. In order to solve this, you can install two water heaters. Heaters having gas fuel produce a high flow of water than the electric ones.

Benefits of using Tankless water heater:

The benefits and drawbacks of using a tankless water heater are listed below.

Longer lifespan and warranty:

When you use conventional tank water heaters, their warranty is up to 8 to 9 years at max but tankless water heaters are different than its predecessors. It offers up to 15 to 20 years of warranty which includes few years for heat exchanger and few for part exchanger.

Energy Efficient:

The tankless water heater is extremely energy efficient and consumes your energy only when needed. you will turn on the tap and the ignition will start to produce hot water, providing you with the best hot water whenever you desire to use them. It saves a maximum of energy in a year as it turns on only when needed.

Saves Spaces:

Tankless water heaters have an attractive slim body than the traditional tank water heaters who occupied space. While using traditional storage tanks, you have to make a proper place for it when you want to fix it but tankless water heaters are an exception. They weigh light and have a slim, shiny, and beautiful structure that you can fix and install anywhere at home without feeling concerned for space.

Installation and maintenance:

Tankless water heaters come with an instructional manual that directs you step by step of installation. If you are good at fixation, you can follow the steps and can install the product within two to three hours but there are some challenging installations that require a professional.

Many brands have 15- to 20 years of warranty that is pretty handsome but you can avail the warranty only when you write details of the hired professional plumber and send it to the company.

Spending some more money on a professional plumber will give you a satisfaction of work done well and through professional hands.

Disadvantages of Using Tankless Water Heaters:

Buying a product is an easy thing while keeping and maintaining the product is an entirely different thing. You will spend money thrice than the usual tank ones and you still have to keep an eye in order to avoid disaster.

Delay:

In most of the heaters when you turn the tap or faucet on, it takes a few seconds at least to get it started. The cold water flows from the narrow pipes and while altering it to hot. This makes it annoying for us as we do not want a delay. Also, when the hot water is running and you are enjoying or working, it will suddenly change the hot flow into cold water and then again into hot water.

Power Outage:

If you are out of electricity, the tankless water heaters would not work, unlike the traditional tanks that provide you with hot water at any time.

Maintainance Required:

The tankless water heaters require maintenance even after you pay thrice the price of tank water heaters. You need to change the heat exchanger after a few years and most of it is quite expensive.

 

 How To Choose Best Tankless Water Heater?

The first thing while purchasing a tankless heater is that you have to understand your needs. We have listed down a few points that can help you in choosing.

Hot water requirement = if you live in a big family and you have to use multiple faucets and showers at the same time, EcoSmart is our top pick which offers you the best facilities. The number of people living at a place and their use of water is parallel to the required hot water.

Size matters = if you are a bachelor and living in the house on your own, you do not need a heavily facilitated product. You can read the specifications provided in our article and through this, you can have a product of your own.

Installation = it is advisable to hire a professional for the installation as you would be pretty relaxed with professional hands working.

 

Best heat source = it is better to go for electric ones but they do need a high circuit in order to perform well. This way, you have to place the heater near the main power plug for high circuit electricity. While if you intend for the gas one, it is better to go for propane one than natural gas.

 

Conclusion:

The tankless water heaters save utility bills, provides instant hot water, and are reliable, clean, and stylish. Providing you with gallons of water within a minute while occupying less place in your home, these heaters have another factor of a long lifespan with considerable warranty. Moreover, they come in different sizes, types, and shapes with different budgets. You can choose a budget-friendly product with desired specifications.

It is hard to find a home without a tankless water heater as they are trendy, stylish, comfortable to use, and provides you with an instant flow. You need to check the specifications along with their prices so you do not waste your money.