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Tankless Water Heaters vs Tank Water Heaters: Which One to Choose?

Updated: Apr 3

The average Canadian uses 75 litres of hot water every day. If you are looking to replace your water heater, you need to ensure it's reliable. You can choose a tank or tankless water heater.

But which one is the better option? The answer depends on the size and capacity your home needs. Water heaters are also a hefty investment, so you’ll also need to consider the cost of each type before you choose.

This article compares traditional water heaters VS tankless water heaters. It will guide you on the best choice for your home by looking at cost, performance, and efficiency.

Keep reading to learn more.

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Tank Water Heaters

Known as the traditional water heaters, tank models come standard with any home. With an average life span ranging between 7-10 years, tank water heaters come in different sizes and hold 20 to 80 gallons of hot water. They operate around the clock using gas fuel or electricity.

Tank water heaters always keep the water at the temperature you like. A downside is that when the tank runs out of hot water, you have to wait for it to replenish before more hot water is available.

Tankless Water Heaters

These water heaters are newer and more energy-efficient. Rather than holding the water in a tank, they heat water as it comes out of your tap. This method allows on-demand heaters to take up less installation space.

Tankless Water heaters use gas or electricity, but you may have to check your electrical system if they aren't compatible.

Water Heaters VS Tankless Water Heaters

You now know how each style operates. Let’s see how the two compare. Tankless and storage water heaters differ based on three main factors.


Installation of a 40-50-gallon tank water heater will cost about $900. Plus, companies can install them quickly since they are a standard system. The average cost of a tankless water heater starts at $5000, and if you must rewire, the amount will increase. Note that prices do increase over time. The best way to get the best prices is to get the replacements don’t sooner rather than later.


A tank water heater's performance will depend on if you choose the right size for your home. The right size storage tank will ensure you won't run out of hot water. When you have a tankless water heater, you will avoid this risk.

However, a tankless water heater may struggle if you have more than one machine using the hot water at once. To avoid this, you may have to install more than one heater, which will mean more out-of-pocket costs.


A tankless water heater has a longer lifespan than a storage water heater. They last between 20 to 30 years, and storage water heaters only last 10 to 15 years. Tankless heaters also ensure that you don't have to worry about keeping a tank full of hot water.

If there is a problem, you have peace of mind that the tank won’t leak. Tankless water heaters also use less energy than tank storage heaters.

Get Tank and Tankless Water Heaters Installed in Edmonton

Modern Air & Water understands the importance of having hot water ready year-round. Our high-quality service ensures all tank and tankless water heaters installation is fast.

Contact us today for a free quote so you can make your decision hassle-free!

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