Nov 19, 2024
3:05:35pm
3:05:35pm
If your furnace has one of the 3-4" thick filters, changing it every six months
or so is fine. The little one-inchers are probably closer to OP, depending on how dusty one's house is, and how many residents/animals/carpets, etc.
Originally posted on Nov 19, 2024 at 3:05:35pm
Message modified by PGVikingDad on Nov 19, 2024 at 3:05:56pm
Message modified by PGVikingDad on Nov 19, 2024 at 3:06:23pm
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