The Ultimate Tankless Water Heater Quiz

By: Staff

4 Min Quiz

Image: refer to hsw

About This Quiz

Tankless or not - that is the question. Will you get hotter, purer or more immediate water if you switch to a tankless water heater system? And will you save on water, energy or your monthly bill if you do? Keep cool as you take this hot hot-water quiz.

How much time does it take for a tankless water heater to heat the water?

Unlike a conventional water heater that continually heats the water in a tank, the tankless water heats it on the spot, as needed.

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In which regions have tankless heaters been in use for a while?

In Europe and Japan, tankless water heaters have been in vogue for a while, whereas in the U.S., they're only starting to come into fashion.

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Are tankless water heaters cost effective?

Tankless systems require an initial outlay of three times the cost of a conventional one, but ultimately they cost less per month.

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What are the main advantages of a tankless water heater over a tank heater?

The tankless water heater lasts a lot longer than a conventional one, provides unlimited hot water and takes up much less space.

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What is the function of "standby heat loss"?

"Standby heat loss" refers to the functioning of a water tank system whereby the water temperature is maintained, even when hot water is not currently needed.

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Where would you find an "on demand" water heater?

You'd find "on demand" only in tankless systems, which heat your water literally according to demand.

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How does the water heat up in a tankless system?

A device called a heat exchanger, run on electricity or gas, transfers heat to the water is it flows through the hot water faucet.

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What is the use of point-of-use tankless water heaters?

Point-of-use systems, because of their tidy size, can be installed near the water outlet even in a cabinet or under the kitchen sink.

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What do whole-house water heaters usually run on?

They usually run on either natural gas or propane, as opposed to point-of-use systems that usually run on electricity.

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What is the problem with lag time?

Lag time, the time it takes for the water to reach the outlet, causes water wastage or excess water consumption.

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Why do some people use aerators?

Some people use aerators solely in order to limit the water flow and thus conserve water.

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The 1992 Federal Energy Policy Act stipulated a set water flow of _____

It stipulated a set water flow of 2.2 gallons (8.3 liters) per minute at 60 pounds per square inch (PSI) for household outlets, in order to conserve water.

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In order to determine what water heater would be suitable for you, what two factors should you take into account?

Depending on the temperature rise and water flow rates, you would install a water heater system accordingly.

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How do you know what is your ground water temperature?

Your ground water temperature is usually about the same as the average air temperature. This, of course, varies according to location and season.

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With a whole-house water heater system, what would happen if you turned on all the faucets at once?

Not that anyone would do this too often, but if you did turn on all the faucets, you'd still have hot water, but it would be distributed among all outlets and of course not last very long.

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Which of these are benefits of a tankless water heating system?

Aside from many other benefits, tankless systems won't flood from a burst tank, are cost effective in the long run and always provide sufficient hot water.

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Are there any drawbacks to the tankless water heater?

As with any appliance, no matter how good it is, there are drawbacks. Some of these are the cost, the necessity of additional gas or electric lines and the lag time involved.

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What cost could be expected with the purchase of a whole-house tankless system in a U.S. home?

In the U.S. it would cost between $1,000 and $2,000 to purchase a whole-house tankless water heater system.

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What is the average lifespan of a tankless system as opposed to a tank water heating system?

There's no debate over this one: Tankless systems last significantly longer, with 15-20 years on average compared to 10 years for a tank one.

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Can you get a rebate in the U.S. on the cost of a tankless unit?

Usually yes. You can get a federal tax rebate of about $300.

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