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by maxerickson
3214 days ago
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The high impact retrofits are better windows, more insulation and new mechanical systems. Getting insulation into walls is hard and at some point doesn't help a lot if there are air gaps. New mechanical systems aren't really cost effective (because operating costs aren't that high; hundreds of dollars of monthly savings on a $10,000 upgrade). For people that use a lot of cooling replacing an old air conditioner can be a big win. |
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