September 24 2010

Conserving Energy via The Tankless Water Heater

by April

How a Tankless Water Heater Works

Since water heating is typically the third largest energy expense, accounting for about 14 percent of your utility bill, another opportunity to save some green is by going tankless. 

Traditionally, water heaters are huge storage tanks of water that are constantly kept hot, which means you are constantly using energy.  A tankless water heater uses either a gas or electric heating unit to heat water as it is needed.  Picture a small box under your sink, plugged into an outlet, which intercepts the cold water and heats it before it comes out of the faucet. 

One drawback is that it may not be enough for simultaneous water heating, for instance taking a shower while the dishwasher is running.  This can be avoided by installing two or more of the heating units in your home, i.e. one for the appliances and another for general use.  A big plus for the tankless heaters: they can be up to 50% more efficient than the traditional tank heaters.

For more information on tankless water heaters - how they work, who makes them, how they are installed, as well as a buying guide – check out:


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