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Q & A about Tankless Water Heater



How does a tankless water heater work?

Tankless water heaters heat water directly without the use of a storage tank. When a hot water tap is turned on, cold water travels through a pipe into the unit. Either a gas burner or an electric element heats the water. As a result, tankless water heaters deliver a constant supply of hot water.


Do tankless water heaters run out of hot water?

Understanding the operation principle of tankless water heater, we can believe that that system can't run out of hot water. However, if you are taking a shower and running the dishwasher at the same time, the water heater will not supply enough hot water for multiple uses.


What're tankless water heater advantages

Besides heating water on demand, there are many benefits to tankless water heaters.

While the cost of a tankless model is greater than conventional storage models, tankless water heaters use less energy and typically last longer. Many tankless models last more than 20 years, versus 10 to 15 years for storage models. On average, the typical family can save about $100 per year with a tankless model.

Tankless water heaters also take up less space than their bulky counterparts. They can be mounted on a wall in a closet or in the basement.

Also, with both gas and electric models available, that means you don’t have to re-work your home’s infrastructure and invest in pricey labor-intensive installation methods.


How long does it take a tankless water heater to heat water?

Typically, tankless water heater take about 15 -20 seconds to heat water up, but you still have to wait for that hot water to arrive at your shower head or faucet, just as you do with a tank-type heater. It's noticed that gas-fired tankless water heaters produce higher flow rates than electric ones.


How much does it cost to install tankless water heater?

A new tankless water heater costs between $1,500 and $2,000 installed, while a whole house tank costs between $600 and $800. A tankless hot water heater costs around $430 without installation and a traditional heater costs around $440.


Which is better hot water heater or tankless?

According to Energy.gov, “For homes that use 41 gallons or less of hot water daily, demand (or tankless) water heaters can be 24% to 34% more energy efficient than conventional storage tank water heaters.” Tankless water heaters (if gas-fired) will save homeowners over $100 annually the longer they remain in service.


Can a homeowner install a tankless water heater?

Installing a gas tankless water heater involves mounting the unit, connecting gas and water lines, and installing a flue. ... A tankless water heater is compact and highly efficient. This project calls for good plumbing skills, and local codes may require that a licensed plumber do the work


Source: Energy.gov

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