4 Things to Consider When Buying Tankless Water Heaters: The Top Three Models in the Market


Switching from traditional heaters to tankless water heaters can be challenging. However, with a few things in mind, you can quickly select the perfect heater. These can be an excellent option for many homeowners, but they are not suitable for every household.

If you are wondering about what is the best tankless water heater, you should determine a few essential things, including your daily water requirement, budget constraints, and space. Analyzing these factors will help you decide if a tankless heater is suitable for your home. Here are quite a few things to think about before making the switch:

How to Choose the Right Model

If you are thinking about what is the best tankless water heater and how to select one, read below to find out some essential factors to remember when selecting the proper size model for your home.

Flow Rate:

Considering the flow rate should be your main priority. The amount of liquid that can pass through the heater in a specific time is known as the flow rate. For instance, if the heater can produce 2 gallons of hot water every minute, its flow rate is 2 gallons per minute (GPM).


You should also take your local climate into account. You will use less hot water in warmer climes than in frigid ones. As a result, warmer weather necessitates a smaller tankless heater compared to an area with a colder climate that requires a larger one.

Daily Requirement:

The volume of hot water you will consume and, consequently, the size of the tankless heater you will require depends on the number of people living in your home. Your household will consume more as there are more occupants, necessitating a larger heater.

Determine the Number of Appliances for Which a Heater Is Needed

The number of hot water-using fixtures and appliances in your house should also be considered. It is utilized by devices like dishwashers, washing machines, and showers, which can impact how much hot water your entire household uses daily.

Top 3 Picks

When it comes to tankless heaters, there are some renowned brands that stand out from the rest. Here are some top picks for the best tankless heaters on the market:

  • Rheem Electric Water Heater

One of the most purchased heaters available today is this Rheem model and for a good reason. With an Energy Factor of.95, it is very effective. It’s a fantastic option for tiny homes or apartments because it’s portable and simple to install.

  • Rinnai Indoor Tankless Heater

If you are looking for an energy-efficient heater, consider this model. It is also incredibly portable and simple to install, with an Energy Factor of.82.

  • EcoSmart ECO 18 Electric Heater

The EcoSmart ECO 18 is among the most-sought options on this list and is worth it for the high quality and performance you get. It has an excellent Energy Factor of .75 and can be heated up quickly thanks to its powerful burner.


Several things, such as budget and daily needs, should be considered if you are in the market for such a heater. With this comprehensive guide, you will indeed make a perfect choice. However, it is essential to research and determine your needs before picking the right one for your home!

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