Tankless water heater FAQs

Here are some of the most frequently asked questions by those thinking about installing tankless water heaters.
On-demand, point-of-contact, tankless — all are names for an increasingly-popular style of water heater that heats water as needed rather than storing hot water in a tank.

Here are some of the most frequently asked questions by those thinking about installing these energy-efficient systems in new homes or choosing them as replacements to traditional tank-style heaters.

1. How does a tankless water heater work?

As the name implies, these systems don't use a tank to store hot water. Water enters the water heater only when it's being demanded, for example when you turn on a faucet or shower. The water travels through a winding coil of heating elements which instantly heat the water to the desired temperature. The water then travels to its destination.

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2. Why should I consider installing a tankless water heater?

Since water is heated as it is demanded rather than being drawn from a tank, these water heaters offer endless hot water. Also, tankless water heaters don't have to cycle on and off to maintain stored water at a set temperature like traditional tank-style water heaters. So, energy isn't wasted and, therefore, they offer savings on monthly utility bills. There is a higher installation cost compared to tank-style heaters, so you'll want to consider several factors as you decide if a tankless system is right for you.

3. What size tankless water heater will I need?

This will depend on the number of appliances and plumbing fixtures you have in your home and the groundwater temperatures in your area. There are two basic kinds of tankless systems: point-of use and whole-house systems.

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4. What maintenance does a tankless water heater require?

Periodic maintenance includes checking the inline screen filter and flushing the system.

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5. How much does a tankless water heater cost?

Tankless water heaters can cost two to three times more to purchase and install than traditional tank-style water heaters. But, the higher cost can be offset by incentives and tax credits. Tankless water heaters last longer than tank-style models and are 40-percent more efficient to operate, so they could save you money in the long run.

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