Building Specifications
Climate & Comfort
Construction Details
Select 'Custom Areas Below' to input specific door/window details.
Window Details
Door Details
Qualitative Factors
Estimated Heat Loss
0
BTUs/hr
This is the approximate heating power your system needs to maintain the desired indoor temperature on the coldest day. Look for a heat pump with a capacity that meets or exceeds this value.
Heat Loss vs. Outdoor Temperature
Heat Loss Breakdown by Surface
Calculating breakdown...