Also we recommend to change your filters every 26,000 of home water use or annually whichever comes first.
Depending on where you live your water bill should have a chart reflecting your monthly and annual use potable not irrigation.
Most homes north of 466 have one water bill with potable and irrigation combined so they change them annually or add a water meter for accuracy.
Snowbirds change the filters every new season to have a fresh set.
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