Tank vs. Tankless Water Heaters

Arizona Comfort Specialists are here to compare traditional storage water heaters and tankless water heaters, so you can decide what is right for your home.

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What's The Difference?

Water heaters, regardless of traditional tank or tankless, are costly investments for homeowners. Whether you're a new homeowner with first time construction or you're replacing an old system, it's important to understand the pros and cons of tank vs tankless water heaters.

What is a Traditional Tank Water Heater?

Storage tank water heaters are found in the majority of homes. Essentially, a tank water heater is an insulated tank that holds between 30 and 50 gallons of water. This tank is used to heat and store the water until it's needed at it's destination. Destinations can include the kitchen, bathroom, or even laundry. Additionally, there are natural gas and electric water tanks. Natural gas tank water heaters utilize almost 50% less energy to operate, resulting in lower costs.

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Pros and Cons of Tank Water Heaters

Pros:

Significantly lower initial cost

Simpler technology; therefore, resulting in less maintenance and repair costs

Hot water can be used by multiple sources at once

Cons:

Slightly higher utility bills

Occupy more space due to their size and cannot be installed outside of the home

Shorter lifespan (10-15 years) than tankless water heaters

You could run out of water in storage

What is a Tankless Water Heater?

Tankless water heaters are also known as on-demand water heaters. Why? Well, as you might be able to infer by the name, tankless water heaters don't store water like their traditional counterpart. Instead, high-power burners rapidly heat water as it transfers through the heat exchanger. Then, the hot water is delivered to it's destination. Tankless water heaters can be powered by electricity or gas and are found to be over 20% more energy efficient than storage water tanks.

Pros and Cons of Tankless Water Heaters

Pros:

Saves money over time

Longer lifespan (20-30 years) than tank water heaters

Require a lot less space and can also be installed on outside walls

The water supply is hot when you need it versus waiting 30 seconds for it to heat up

Cons:

Higher initial cost

Installation, repair, and labor costs are more costly due to the complexity

Require yearly servicing to prevent damage and ensure efficiency

Limited flow rate

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Tank vs Tankless Water Heaters

Summary

If a tankless water heater fits the budget, it can end up saving you money in the long run and have a longer lifespan; however, tankless water heaters can also have output restrictions. Though the water is hot instantly, if there are multiple destinations requiring hot water, one might suffer.

Storage tank water heaters offer a reserve of hot water and typically cost less for installation and maintenance, but take up more space, and if you run out of stored hot water, it can take a while for the water to warm up again.

When it comes to tank versus tankless water heaters, it really depends on what you are looking and how much hot water you need at a time, where the unit can go, and your long-term goals for the unit and its costs.

Need Water Heater Services?

If you need water heater services, whether it's new installation, repair, or replacement services, Arizona Comfort Specialists are here to help! Contact us today.