I want to estimate our heating/cooling needs to figure out what the potential value of increasing insulation would be.
Our insulation in the attic floor is the fluffy stuff (not fiberglass) and IIRC< it's about 2' thick.
We heat and cool with a heat pump, so it's all electricity costs. We do a small amount of heating during the morning and evening with a gas fireplace.
We don't use the heat pump a lot. It has 2 programmable thermostats (upstairs and down) which we keep at 72 or lower in the winter and 77 or 78 in the summer. And we only condition the temp upstairs at night and downstairs during the day.
3600 Sq Foot home (3 stories) with decent insulation. Here's what I've done so far:
Got my usage for the year, by month. Found the lowest month $143 (month of May). assume that was no heating and minimal A/C. We are in the mountains of SW Virginia and the summers are fairly mild (certainly in May).
I then assume any additional electricity was heating and cooling. So our avg was $232, so $1092 per year for heating and cooling.
Any I missing anything?