HERS Index and the “reference house”
I think that the HERS index is a pretty good barometer of good design choices and strategies.
There are some strategies that are not picked up by the index.
Part of this is due to the “reference house” concept.
Some design choices are not recognized because you are comparing your house to a geometric twin of YOUR house.
That means that a house with just a few corners may not Index much better than a house with way too many corners.
Same is true for homes with large wall surface area to floor area ratios compared to a more compact home.
The compact home will perform better … but may not INDEX better.
There are other examples…
Anybody have other examples or care to comment?
The good and the bad of the HERS index?
GBA Detail Library
A collection of one thousand construction details organized by climate and house part