How to Clean a Cartridge Pool Filter (Step-by-Step Guide)
Cartridge filters provide excellent filtration, but they require regular cleaning to maintain proper water flow and pressure. This guide walks you through both quick cleaning and deep cleaning methods to keep your filter performing at its best.
When Should You Clean Your Cartridge Filter?
- Filter pressure is 8–10 PSI higher than normal
- Water flow is reduced
- Pool water becomes cloudy
- Filter has not been cleaned in 2–4 weeks
Method 1: Quick Rinse Cleaning
This is your routine cleaning method and should be done regularly.
Step-by-Step
- Turn off the pump and release pressure
- Open the filter housing
- Remove the cartridge
- Rinse with a garden hose, working from top to bottom
- Focus on debris trapped between pleats
- Reinstall cartridge and restart system
For faster and more effective cleaning, you can use:
- Doheny’s Magic Filter Cleaning Wand – helps spray deep between pleats
- Blaster 1000 Automatic Cartridge Cleaner – automates the cleaning process
Method 2: Deep Cleaning (Degreasing)
Over time, oils, sunscreen, and fine debris can build up and cannot be removed with water alone. A deep clean helps restore full performance.
We recommend using Doheny’s Filter Cleaner & Degreaser for best results.
Step-by-Step Deep Cleaning
- Remove cartridge from filter
- Rinse off loose debris
- Prepare cleaning solution per product instructions
- Soak cartridge in solution for several hours (or overnight)
- Rinse thoroughly with hose
- Allow to dry (optional but recommended)
- Reinstall and restart system
When to Replace Your Cartridge
- Pressure remains high after cleaning
- Cartridge fabric is torn, frayed, or flattened
- Water stays cloudy after proper cleaning
- Cartridge is 1–2 seasons old
Common Mistakes to Avoid
- Not rinsing between pleats thoroughly
- Skipping deep cleaning when oils are present
- Using high-pressure washers that damage the cartridge
- Waiting too long between cleanings
Common Questions
- How often should I clean my cartridge filter?
- Can I use a pressure washer to clean my filter?
- Why is my filter pressure still high after cleaning?
- How do I know if my cartridge needs to be replaced?
Contact Doheny's Customer Care
If you need help, our Customer Care team is here to assist.
📧 Email: customercare@doheny.com
📞 Phone: 800.574.7665
💬 Live Chat: www.doheny.com
📩 Contact Us: www.doheny.com/contact