Hot Water For Cold Days? Consider Our Best Tankless Water Heater

Tankless water heaters have become more and more popular on the market. The best tankless water heater will supply you with a constant source of heated water anytime you need. It also runs very efficiently, helping you to save a lot of energy and money.

There are a few things that you need to consider when choosing the best tankless water heater such as size and capacity. Read on to learn more information about a tankless water heater and how to pick the best one on the market.

How Tankless Water Heaters Work

Traditionally, a heater stores heated water inside an insulated tank. On the other hand, tankless water heater does not use any insulated tank to store hot water at all.

Alternatively, a tankless water heater makes hot water while the water is running through the system.

How Tankless Water Heaters Work

Image source:

When you turn on the hot water tap, a source of cold water will enter the system, and the burner is ignited. The source of energy could be electricity or gas. Then the cold water goes through the flow sensor to the heat exchanger where it is heated to reach then wanted temperature. After that, the heated water goes out through the valve.

If you turn off the hot water tap, the unit will then shut down immediately.

The Pros And Cons Of A Water Tankless Heater

Here are some benefits of using a tankless water heater:

  • It is more energy efficient than the traditional heater as there is no need to spend energy on storing hot water for a long time.
  • It is durable, so you don’t have to worry about the degradation and corrosion in the quality of any tank.
  • Also, it saves a lot of space with its compact design, and it’s not necessary to spare a space for a tank.
  • Finally, it never runs out of hot water as hot water is constantly made on demand.

And here are some of its drawbacks:

  • The installation cost is very high in comparison with the traditional heater.
  • Temperature might drop significantly if few hot water appliances are running at the same time.

Things To Consider When Choosing A Good Tankless Water Heater


The size of a tankless water heater depends on where you intend to put it and what you are going to use it for. If you want to put it under the sink to provide hot water for this area, you can choose a heater with small size. However, if you want a heater which provides water for a family to shower, you might need a bigger size.


Image source: Bob Vila



The gas heater is quite cheap to operate, especially when you mention about long term impact. You can also have hot water in a short amount of time and don’t have to worry about the inconsistency of the temperature. One main disadvantage of a gas tankless water heater is that you need to have gas pipes and venting. It also requires you to have frequent maintenance on the water heating system to prevent a gas leak.


This type of heater is very easy to install as it requires no extra equipment. You also don’t have to worry about explosive risk or combustible byproduct of the burning. It is the safest to use among these three types. Nevertheless, it takes longer for an electric water heater to heat up water. If several people need hot water at the same time, it’ll be hard for you to enjoy a constant flow of hot water.

Electric tankless water heater

Image Source: Green Building Advisor


This type of energy is less expensive than other types. Also, it has a higher BTU rating and can provide hot water in the shortest amount of time. However, you need to inspect the heater at least once a year for any possible leaks and soot buildup. It also bears a higher explosive risk so be sure to follow all of the safety guidelines carefully when you use this type of heater.

Propane tankless water heater

Image Source: Combined Energy Services Blog


The cost will depend on which type of heater you go for, its capacity as well as it is modern. You need to pay for the unit itself, other supporting items such as venting and the cost of initiating the heater. There are quite a few deals on the market. However, since this appliance can affect the overall wellbeing of your family, you should think twice about a deal which is too cheap.

Water Temperature Rise

This specification measures the difference between the incoming water and the heated water’s temperature. It is more important if you live in a colder area. In this case, the water in your faucet is cold. Therefore, it needs a greater temperature rise so that you can feel comfortable. You can choose one heater that produces a little rise in water temperature in order to save energy. Also, if you live in a warm climate area, you might not need to heat up the water to a very high degree.

Gallons Per Minute

Gallons Per Minute

Image source: Portable solar powered water purification, Solar power water pumps

This number shows how much water your tankless water heater can produce each minute. Typically, a cheap unit will produce a lower number of gallons per minute. If you use the heater for heating water in the sink or individual use, you can opt for this option to save money.

Flow Activation

The flow activation of a tankless water heater shows how much water it needs to ignite the burner inside the heater. The more water it needs, the longer you need to wait before you have hot water.

In this case, you need to trade off with gallons per minute. The higher the GMP, the slower you need to wait.

Safety Features

There are additional safety features you can consider to ensure the utmost safety of your family. For examples, they are CO detector or automatic shut-down system.

Best Tankless Water Heater Reviews

This model is a gas-fired model of tankless water heaters, and it uses liquid propane as well as 2D cell batteries to operate. It can reach the temperature of 150 degrees Fahrenheit at the rate of 1.4 GPM. Also, you can control the temperature with a gas regulator dial.


  • You can use this appliance as a source of the heater as well as outdoor shower. Moreover, it is easiest to set up everywhere.
  • Also, it is very lightweight with 13 pounds. Along with its compact size so that you can easily take it out when you go picnicking or camping.
  • It uses batteries to ignite the flame. Therefore, there is no need to use electricity.


  • It is hard to use this heater outdoor as the wind can blow off the flame.

This is a gas-fired model of tankless water heaters. Like the previous one, it uses liquid propane as well as 2D cell batteries to operate. Additionally, it has the BTU rating of 140000 and produces water at the rate of 6.6 GPM. You can also control the temperature with a gas regulator dial.


  • This type of heater comes with a very high BTU ratings and GPM. Therefore, you always have enough hot water even when you live in a cold area.  Furthermore, the hot water supplied is very constant.


  • This heater is relatively bigger in size than other tankless water heaters you can find on the market.
  • Also, the installation cost is also higher as it includes installing a venting system.

This tankless water heater uses electric to operate and is controlled digitally with LED screen.  It has the BTU rating of 140000 and produces water at the rate of 6.6 GPM. You can control the temperature with a gas regulator dial.


  • It has a small and compact design with a very lightweight, suitable for putting anywhere in your bathroom.
  • Also, this electric heater has a wide range of temperature and high GPM to handle a lot of supply at the same time.
  • You don’t need to install any venting system, helping to cut down the cost of installing.


  • However, it is not suitable for your current facilities for gas and propane heater.

This tankless water heater uses the self-modulating technology, and it can produce hot water at 105 degrees Fahrenheit and a flow of 3 GMP.  You can control the temperature with a remote control or by hand. There are three heating elements, which are activated one by one after demand rises.


  • It is very easy to install and operate this heater.
  • The innovative technology installed in the heater helps to save energy even more.
  • It comes with a small and compact size to be installed almost everywhere you desire.


  • It doesn’t work so effectively when installed in an area with freezing climate due to its low-temperature rise.
  • It also requires high demand in comparison with other appliances in your house.

This heater has a maximum BTU rating of 199000 with the max energy factor of 0.93. This heater uses propane as the energy source and features the condensing technology for the maximum effectiveness. Also, it produces hot water at the rate of 9.8 GPM. The safety features included in this heater are combustion propeller check and frost protector.


  • First of all, it has a high number of BTU ratings. Along with the high flow rate, you can have hot water as quickly as possible.
  • With the technologies used to make this heater, you are ensured to have the most energy efficiency from the heater.
  • It is a great heater to install outdoor.


  • It is quite large and bulky, which might not fit into your bathroom. Also, installing this unit is very hard, and you need to hire professionals to do the job.

Frequently Asked Questions

What Is A Tankless Water Heater?

A tankless water heater heats water and brings it to you right away when you open the hot water faucet.

How Much Does Tankless Water Heater Installation Cost?

The cost of the installation includes the cost of installing the unit, venting as well as the gas meter and gas line. In general, it costs twice and a half time as much as the traditional heater.

Can A Tankless Heater Be Installed In the Same Place As The Old Traditional Heater?

A tankless heater can be installed anywhere provided that there is enough combustion air. Therefore, you can totally have the tankless heater installed in the same old place of the traditional heater.

How Much Can I Save Each Month With A New Tankless Water Heater?

Depending on your usage, you can save at least 30% of the bill when you switch to the new kind of water heater.

Overall, if you are looking for a water heater which is energy efficient to provide hot water anytime, you can consider a tankless water heater. There are a few important features that you need to consider in a tankless water heater such as its size, its capacity, and its type.

Keep in mind all of the information above, and you would sure find a tankless water heater that is the most suitable for your needs.

No Responses

Write a response