Maintaining your swimming pool’s filtration system is crucial to keeping your water clean, safe, and crystal clear. Whether you’re using a sand filter, cartridge filter, or DE (diatomaceous earth) filter, regular cleaning ensures optimal performance and longevity of your pool equipment.
In this guide, we’ll walk through how to clean each type of pool filter, what it costs in Cape Town, and when it may be time to consider a new pool filter installation.
Why Pool Filter Cleaning Is Essential
A dirty or clogged pool filter reduces water circulation, strains your pump, and causes algae growth or murky water. Pool filter maintenance is one of the most important pool services in Cape Town, helping you avoid expensive pool repairs or replacements.
Step-by-Step: How to Clean Each Pool Filter Type
Sand Pool Filters
Tools needed: Backwash hose, water source, pool filter cleaner (optional)
Steps:
- Turn off the pool pump.
- Set the multiport valve to “Backwash”.
- Run the pump for 2–3 minutes until water in the sight glass is clear.
- Switch the valve to “Rinse” and run for 1 minute.
- Return the valve to “Filter” and restart the pump.
Pro Tip: Clean your sand filter every 1–2 weeks during summer or after heavy pool usage.
Cartridge Pool Filters
Tools needed: Hose with spray nozzle, filter cleaner (optional), bucket
Steps:
- Turn off the pump and relieve system pressure.
- Remove the cartridge from the housing.
- Rinse thoroughly using a hose at a 45° angle.
- For deep cleaning, soak in filter cleaner for 12–24 hours.
- Rinse again and reinstall.
Clean your cartridge filter every 4–6 weeks or when pressure rises 10 psi above normal.
DE (Diatomaceous Earth) Pool Filters
Tools needed: Backwash hose, DE powder, water source
Steps:
- Turn off the pump.
- Set the valve to “Backwash” and run for 3–5 minutes.
- Switch to “Rinse”, then back to “Filter”.
- Add new DE powder via the skimmer.
- Restart the pump and monitor pressure.
DE filters require backwashing every 4–6 weeks and full teardown every 6 months.
Cost of Pool Filter Cleaning vs. New Installation in Cape Town
| Service | Average Cost (ZAR) | Notes |
|---|---|---|
| Sand Filter Cleaning | R400–R750 | Includes backwashing and inspection |
| Cartridge Cleaning | R500–R950 | Depends on cartridge size and condition |
| DE Filter Cleaning | R650–R1,200 | Includes DE powder replacement |
| New Sand Filter Installation | R4,500–R7,000 | Includes parts and labour |
| New Cartridge Filter System | R5,500–R8,500 | Varies by brand and size |
| New DE Filter Installation | R6,000–R10,000 | Premium filtration system |
Hiring a professional pool company in Cape Town ensures your filtration system is cleaned safely, efficiently, and in line with manufacturer recommendations.
When to Replace Your Pool Filter
- Sand is over 5 years old or clogged
- Cartridge has visible cracks or wear
- DE grids are damaged or leaking
- You experience recurring algae or cloudy water
- Water pressure remains high after cleaning
Need help? Get a quote from a certified Cape Town swimming pool technician today.
Frequently Asked Questions
How often should pool filters be cleaned?
Every 4–6 weeks for most pools. Backwashing should be done more frequently during heavy usage or after rain.
Can I clean pool filters myself?
Yes, but for deeper cleaning or filter grid replacements, it’s best to use professional swimming pool services in Cape Town.
What’s the difference between filter cleaning and backwashing?
Backwashing is specific to sand and DE filters. Cleaning often refers to cartridge or chemical rinses for all types.
Is it cheaper to clean or replace a filter?
Cleaning is cheaper short-term. However, if filters are damaged or overused, replacement saves money in the long run by reducing strain on your pool pump and improving efficiency.
Do you offer pool filter maintenance near me?
Yes! We provide pool filter services in Cape Town, Brackenfell, Durbanville, and surrounding areas.
