The Pros and Cons of Tank and Tankless Water heaters

Water Heater Types

While a number of homeowners have switched to tankless water heaters to save on energy bills and storage space over , there are certain benefits to tank vs tankless water heaters based models. In choosing a new water heater, you might be thinking to choose between traditional and tankless and of course, its your choice to pick which one best suits your needs within the home. Like most major home improvement decisions, there are certain advantages and disadvantages to each choice.

Key differences between traditional and tankless water heaters

The traditional tank water heater stores and then per-heats anywhere between 30 too 50 gallons of water in the tank. This water gets used when someone showers, washes dishes, washes clothes or any other type of home task requiring hot water. Then the tank will refill and reheat itself again giving you continuous supply of hot water when needed.

Tankless water heaters, on the other hand, use electric or gas heating to warm the water whenever you have a need for it within your home. There is no tank to store the hot water, so the water is simply heated on demand.

Pros and Cons of Traditional Tank Water Heaters

Tank water heaters have great benefits when it comes to replacement and maintenance, they are fairly simple to maintain your self and part replacement cost will be low also. Other benefits include low installation cost at around half as much in terms of price of a tankless heater. There are also fairly easy to replace thanks to the simple tank in tank out method of installation.

However there are cons as well the inefficiency of traditional heaters means they’ll constantly heat and reheat water, no matter what your usage is. This boosts you water and energy bills during the winter. They can run out of water pretty fast too, which means cold showers if everyone has to take a shower at a time. If this is a regular occurrence try to increase the storage tank capacity. The image below illustrates tankless water heater versus traditional option and how they work.

tank vs tankless water heaters

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Pros and Cons of Tankless Water Heaters

Tankless water heaters, on the other hand have a number of advantages these types can save quite a lot on energy bills across the year. The downside of these types of heater are that they cost quite a bit to install, anywhere between $3000-5000. And if you need to replace them, they cost a lot more than a traditional heater because their tankless system is more complex to install and uninstall.

Energy requirements of traditions vs. tankless

Traditional water heaters those that are gas-powered might use anywhere between 30,000 – 60,000 BTU of propane. Thankless systems typically take 150,00-2000,000. If you are thinking of going electric instead of gas-powered tankless systems, be certain your electrical installation in the home can handle this requirement. Keep in mind that electricity costs end to be higher than gas in a lot of areas as well.

Cost saving

Switching to a more efficient tankless heater can save a lot in the long run. Monthly costs for a high-efficiency electric tank unit are about $60, while tankless might run you about $30 per month, which is over half the total monthly savings. Even if cheaper heaters cost less to buy they cost more to actually run. Think in terms of how long the life spam of your heater will be and how long you’ll be running it.

Is a tankless heater right for your home?

Before choosing to install a tankless water heater, think about a few factors first is the demand for hot water in your house particularly great? Do you need to heat one bathroom or the whole house? Secondly, think about requirements in terms of electricity and gas, gas models will need proper ventilation while electric models need specific amperage, voltage and circuit breaker, you’ll also want to think about the location of the heater it should be about 50 ft. from the power source and will either be mounted on an exterior or internal surface.


In the end, pick the type of water heater that will best fit your lifestyle, budget and water usage on a monthly basis. If your comfortable with higher initial costs tankless heaters will save you money in the long run. Take a look at our top 10 tankless water heaters and how they compare in our reviews to help before purchasing. However if you’re on a limited income traditional water heaters might be more economical.

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