How Often Do I Need to Change My Filters?

Why Timely Filter Changes Matter

Filters lose efficiency over time. Clogged media reduces water pressure and flow. Worse: old filters can breed bacteria and release trapped contaminants.
Regular replacement ensures:
✔ Safe drinking water
✔ Appliance protection
✔ Cost savings (avoid repairs)

Shocking stat: 68% of water treatment failures stem from overdue filter changes (2024 WQA Study).

Standard Replacement Schedules by Filter Type

Sediment Filters (PP, String Wound)

• Every 3-6 months
• Change when pressure drops 15%
• Exception: High-turbidity wells: Monthly

Carbon Filters (GAC, Carbon Block)

• Every 6-12 months
• Chlorine taste = immediate change
• Pro tip: Flush new carbon filters 5 mins

Reverse Osmosis Membranes

• Every 2-5 years
• Test TDS monthly (15% increase = replace)

Whole-House Systems

• Pre-filters: 3-6 months
• Main filters: 6-12 months

5 Key Factors That Change Your Schedule

⚠️ Warning: Never rely solely on time! Check these:

Factor	Impact on Lifespan
Water Quality	High sediment/TDS = 2x faster replacement
Usage	Large families need 30% more frequent changes
Filter Type	Pleated PP > String Wound > Carbon Block
Pressure	<40 PSI extends life; >80 PSI shortens it
Season	Spring runoff clogs filters faster

Real example: Our Florida client changed carbon filters yearly until testing showed tannin contamination required quarterly swaps.

Step-by-Step: When to Replace (5 Signs)

Watch for these red flags:

1. Pressure drop (faucet flow slows noticeably)
2. Odd tastes/smells (earthiness, chlorine)
3. Cloudy water (sediment breakthrough)
4. Altered appliance behavior (ice maker slowdown)
5. Visual discoloration (brown/black filter media)

Quick test: Fill a glass post-filter. Compare to unfiltered water. Cloudiness? Change now.

Prolonging Filter Life: 3 Expert Tactics

✅ Pre-Filtration Matters

Add a 20-micron sediment filter before carbon units. Boosts carbon life 40%.

✅ Smart Pressure Management

Install a pressure regulator if PSI > 80.

✅ Seasonal Testing

Test water quarterly with TDS meters/strips.

Surprising fact: Well users save $120/year by adding a spin-down filter before main systems.