December Usage: ---------------------------------- * February Usage:
Coal used: Bituminous Nut 2640# ----------------* Coal used: Bituminous Nut 2268#
Ash: 315# -------------------------------------------* Ash: 269#
Ash%: 11.9% ---------------------------------------- * Ash%: 11.86%
Degree Days: 1002 --------------------------------- * Degree Days: 961
# Used/degree day: 2.64# -------------------------* # Used/degree day: 2.36#
Or----2.32# less Ash ---------------------------------* Or----2.08# less Ash
January Usage:----------------------------------------*March Usage:
Coal used: Bituminous Nut 2951#-------------------*Coal used;Bituminous house & Nut 1976#
Ash: 328#----------------------------------------------*Ash: 192#
Ash%: 11.12%------------------------------------------*Ash%: 9.7%
Degree Days: 1341------------------------------------*Degree Days: 874
# Used/degree day: 2.20#----------------------------*#Used/degree day: 2.26#
Or-----1.96# Less Ash---------------------------------*Or-----2.04# less Ash
As you can see the only accurate way to judge your usage is by the degree day method
which stay steady no matter the weather.In my case about 2.25# of coal is needed to
heat my house.So on a 40 degree day I have to load 100# of coal.Used more house coal
this month(new Load) which seems to have lower ash.
http://www.wunderground.com/ Where I get the data for calculations,and a lot of
Historical Data from the closest weather station.
BigBarney