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Water Heaters:  Hot water only when you need it

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Hot water only when you need it

Key Features:
  • LP or Propane Gas
  • Maximum hot water capacity, 4 gallons per minute at a 75 degree temperature rise.
  • Set heat at 98 to 140 degrees
  • Cool to the touch exterior
  • About $1,600 (not installed) (2008).
  • Pricing as of 2008.
Ask For:
  • R94LSi tankless hot water heater
Learn more about Rinnai:
by Deborah Holmes, Ebricks.com
Delayed gratification can be a good thing, but not when you're waiting for the hot water to come out of the showerhead. With Rinnai's tankless hot water heater, you never have to worry about running out of hot water.

Even better, you don't have to see your hard-earned dollars flying out the window when you're not using the hot water.

Unlike conventional water heaters which keep a 40-gallon tankful hot around the clock, a tankless heater only uses fuel when you start to use hot water. As soon as you close the hot water tap, the heater shuts off.

Running on natural gas or liquid propane, the heater's burner ignites as soon as it detects hot water demand. The water flows though a high-efficiency copper heat exchanger and hot water comes out of your tap.

All Rinnai tankless heaters have control panels allowing the homeowner to set the water temperature from 98 to 140 degrees.

The Rinnai costs about four times as much as a basic electric heater, but saves a great deal of energy. According to Rinnai's calculations, someone living in my state (Maine) and using an electric hot water heater could save 48 percent on water heating expenses by switching to a tankless propane heater. 

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