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There is no credit for other kinds of electric water heaters. In addition, windows, doors, insulation, and roofs must be expected to last at least five years a two-year warranty is sufficient to demonstrate this. Allows credits for purchases of advanced main air circulating fans, natural gas, propane, or oil furnaces or hot water boilers and other qualified energy efficient equipment. This is about 20 percent more efficient than the current federal standard. The fuel economy credit depends on the improvement of the fuel economy over the baseline. Natural gas, propane, or oil water heaters must have an energy factor EF of at least 0. The amount of the credit varies, depending on several factors. The conservation credit depends on the estimated lifetime fuel savings, expressed in gallons of gasoline.
Fuel savings are calculated as 120,000 miles divided by baseline mpg minus 120,000 miles divided by vehicle mpg. Congress takes small steps back-and-forth on hybrid vs. Who gets it? Individuals who install specific energy-efficient home improvements.
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