Building Envelope: This is basically your four walls, windows, floor and ceiling.
Addressable Building Envelope: These are all the first step to reduced seasonal Heating and A/C Costs.
Energy Efficiency Methods:
Savings: The savings vary considerably and average weather conditions are used. In the case of mild Summers and Winters following improvements you would not save as much as predicted. In the case of extreme Summers and Winters you would save more than predicted.
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