Quote:
Originally Posted by MikeVillages
Furnace/AC filter change interval?
Your info/comments and questions?
INFO:
Filter size: 16x25x4
Filter MERV: 10, what the previous owner used.
Square feet: 2000.
No pets:
Occasionally open windows for fresh air.
We usually keep the AC temperature @ 79 as we find that comfortable. The furnace temperature is set much lower.
We usually change around 6 months but think we could go longer.
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More pleated filters have more surface area. I would recommend 20 plus pleates at Merv 11 to 13. If you run your system normally with no pets and no smoking, you should get a year. Check the first of every month after 6 months and see what it looks like.
Also buy by the box. 4 inch filters come 6 to a box and the case cost is much cheaper. They don't go bad if kept dry.