You should replace a water filter cartridge on the schedule the manufacturer lists, because lifespan depends on the filter type, household use, and the quality of your incoming water. The most common driver is particle loading from sediment and minerals that clogs the filter media over time. Along the Treasure Coast, coastal minerals and salt can cause cartridges to load faster than expected, so intervals often tighten with beachside supplies. If recurring water-quality problems persist, it may be smarter to pair the cartridge with a whole-home softener or add-ons like UV to handle biological concerns. Del-Air offers maintenance plans with two annual maintenance visits that help keep water-treatment systems performing.
Watch for these clear replace-now signals:
- Taste or odors return after starting clean.
- Noticeable drop in water pressure at faucets.
- Water turns cloudy or discolored.
If you’re unsure, book an in-home assessment so a licensed plumber can match the cartridge schedule to your actual water conditions.
Updated: 2026-09-06
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