Tankless Water Heaters?

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Posted by: from Brave
12/7/2007 at 11:24:19 PM

I understand the tankless or demand water heaters are more efficient and less taxing on one's energy useage. This makes sense since there is no need to be maintaining the temperate of a large tank of water. I've read tankless heaters can be in a range of 8% to 50% more energy efficient than traditional heaters with tanks. The variables are how much water is used and how many demand heaters are installed. Does anyone have first hand experience with this?

I'd also like any advice you may have regarding the number of heaters needed to ensure adequate supply throughout the house. I want to have enough hot water to do more than one activity at a time. Does this require a heater be installed at each source of hot water?

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Heather in Lyndon
Date/Time4/27/2008 at 8:58:11 PM

My understanding is the same as yours. I've also read that large quantities of hot water, such as a bathtub, would require a gas tankless heater. Areas where smaller quantities of water are needed can use electric tankless heaters.

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Date/Time12/5/2008 at 7:57:39 PM

Your concerns are valid, and good questions.

Size of your home, ie sq. ft, number of people

in house, number of bathrooms, single story,

two story. Normal size home, 2000 sq. ft., four

people, figure 9-11 gpm for your tankless, with

a chilpepper recirc pump approved for tankless water heaters will save you up to

16,000 gals of water a year. Your therms of

gas used in the house will drop by 30%, and

you will have all the hot water you can use.

Just be sure to have a water softener, or

descaler before the heater to prevent scaling

of heat exchanger.

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