Curriculum / Fixed Costs / Module 6
Envelope before equipment
Air sealing and insulation return more per dollar than replacing a working furnace, and almost nobody does them in that order.
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The first lesson of every course is open. This one is not.
Air sealing and insulation return more per dollar than replacing a working furnace, and almost nobody does them in that order. It runs to roughly 0 words, and it is one of 32 in this course.