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Posted by Oscar_Lives on February 6, 2007, 6:57 pm
>I currently have a natural gas furnace and a air-source heat pump.
> Since the effiecency of a heat pump varies on a number of factors, I
> would like to find out at what outside temperature does it become more
> COST EFFICIENT to switch over to my natural gas furnace vs air-source
> heat pump? I am pretty sure I'm going to have to create a spreadsheet
> to calculate this. That way when costs change, this would allow the
> user to know how it effects the outside temperature.
> 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!!!
I'd need to see a couple of pics of your tits!
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