So I have 3 years of utility data and I am comparing NatGas vs. Heat Pump.
I am in mid-Atlantic, Maryland an hour south of Lancaster, PA.
For Heat Pump, I know that COP varies with outdoor temp.
However, time of use and temp data unavailable.
If one was to "guess", what would be a reasonable COP to use in a rough comparision. Currently I am using 3.5