As an Amazon Associate I earn from qualifying purchases.Updated: March 27, 2026
The Filter in your PUR DS-1800Z plays a crucial role in removing impurities from water. Over time, the filter media becomes saturated and less effective, leading to reduced water quality and flow rate. Replacing it regularly ensures your device continues to provide clean and safe drinking water. Neglecting filter replacements can lead to buildup of contaminants and potential damage to your PUR DS-1800Z.
$26.85
Price from Amazon • As an Amazon Associate I earn from qualifying purchases.
Function: The Filter removes impurities like chlorine, sediment, and other unwanted substances from your water.
Signs it needs replacing: Reduced water flow, unpleasant taste or odor in the water, cloudy appearance.
OEM vs aftermarket: Original Equipment Manufacturer (OEM) filters guarantee compatibility but are typically more expensive. Aftermarket options are often available at lower prices but always verify they are specifically designed for the PUR DS-1800Z model.
Installation: Replacing the Filter is usually straightforward and involves simply twisting or snapping out the old filter and inserting a new one. Refer to your device's manual for specific instructions.
Replacement schedule: every 2 months
Compatibility warning: always verify part number matches your exact model before ordering
Pros & Cons
Pros
✓ Restores device to original performance without buying a new unit
✓ Significantly cheaper than a full device replacement
✓ Multiple options available from OEM and aftermarket sellers
Cons
✗ OEM parts cost more than third-party alternatives
✗ Wrong part number will not fit — model verification is essential
Common Use Cases
Scheduled maintenance on the every 2 months replacement cycle
Performance restoration after noticing reduced output or efficiency
Preventive replacement before a worn part causes secondary damage
Who Should Buy This
This replacement Filter is for PUR DS-1800Z owners who are experiencing a decline in water quality or flow rate. Replacing the filter will restore your device to optimal performance and ensure you continue to enjoy clean drinking water.
Not ideal for: If your PUR DS-1800Z is significantly damaged or malfunctioning beyond just needing a new filter, it may be more cost-effective to replace the entire unit.
Good to Know Before Buying
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Always confirm your exact model number (DS-1800Z) before ordering. Part numbers vary between model variants and production years. Check the label on your device or original documentation to be sure.
Frequently Asked Questions
What is the part number for the PUR DS-1800Z Filter?
The part number is RF-9999. Always verify this matches your exact model (DS-1800Z) before ordering, as similar models may use different parts.
How often should I replace the Filter on my PUR DS-1800Z?
every 2 months
Will aftermarket Filter replacements work in my PUR DS-1800Z?
Third-party parts are widely available and often cheaper than OEM. Look for listings that specifically mention compatibility with model DS-1800Z and check buyer reviews for fit confirmation before purchasing.
Prices change frequently. See the latest deal on Amazon.