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by foobarian
2583 days ago
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> you can upgrade a forced-air system to use better filters, which basically gives you a filter for your entire house. This is a reason I really like our forced air system (New England house from the 50s): it can circulate and filter the air even without heating or cooling it. I have it run hourly for part of the day and it does wonders to keep the air fresh (i.e. we really notice when the system is off for some reason). |
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