this post was submitted on 24 Jun 2024
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I work in building science. It's obscene how little actual design and quality control goes into residential homes.
The typical design is just one step above being illegal, and people are often scared off of doing anything more than that by the threat of increased cost. However, they don't realize that they pay for it either way; either on their mortgage, or on utilities. Only one of those you can actually own in the end.
So how does a homeowner fix it? The duct work is already in, so is it just about choosing more wisely when replacing the furnace/ac/heat pump?
It starts early in the design process. But at that stage, it would be best to pause installation, have a mechanical engineer do the mechanical design (including equipment selection) based on an energy model and install the recommended equipment.