Can anyone help me out or has this already been done before somewhere else?
HeatPump variables HSPF Size of unit (in what measurement?) Outside temperature Inside temperature Cost of electricity
Natural Gas furnace variables Cost of fuel efficiency of unit
Are these the main variables needed? Where can I find the necessary formulas? I really appreciate any help that can be given. If I can figure this out I may be able to put up an online spreadsheet or something. Thank you!!!