Best choice for windows in passive solar house?
We have a passive solar house in northern New Mexico and we need to replace our 19 4’x6′ clerestory windows. We seem to have the choice between clear glass double pane windows, or Low E windows with an SHGC of .29 and a U factor of .31. I know that a higher SHGC window would be ideal, but that doesn’t appear to be an option in our price range.
So, is it better to sacrifice heat gain for better insulation, or sacrifice insulation for better heat gain? Summer overheating is not an issue — I’m worried about winter heating. Thanks for any advice!
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