Another HVAC / Efficiency tool! Trying to figure out how to compare the costs of heating your home or business with various fuels? Our comparison calculator can help. It's easy:1.) Enter the current prices for the fuels you wish to compare.2.) Select the tab of the fuel you currently use.3.) Press the Calculate button to see costs of alternative fuels in comparison to your selected fuel. The lowest cost fuel is the "most bang for your buck". Calculations are for BTU ratings in comparison. NOTE: This free app is intended only for general comparisons and the developer takes no responsibility for any erroneous calculations. These totals are estimated and do not take into account the efficiency of the device delivering the heat.