How Often Should You Replace Your Spa Filter?
Your spa filter is one of the hardest-working parts of your entire system — quietly removing dirt, oils, and debris from the water so you can relax in a clean, healthy spa.
But even the best filter doesn’t last forever. Knowing when to clean, when to replace, and how to care for your filter is essential for keeping your spa water crystal clear all year round.
At Pool & Spa Shop, we’re here to help you understand how often to replace your spa filter and what signs to watch out for.
What Does a Spa Filter Do?
Your spa filter traps everything from skin oils and sunscreen to fine dirt particles.
It keeps these contaminants from circulating through your system, protecting pumps, heaters, and jets from blockages and wear.
When the filter becomes clogged or worn out, your water can quickly turn cloudy, your sanitiser becomes less effective, and your equipment has to work harder — all of which shorten your spa’s lifespan.
👉 Shop Replacement Spa Filters
How Often Should You Clean Your Spa Filter?
Regular cleaning extends your filter’s life and helps maintain sparkling water clarity.
As a general rule:
🗓️ Every Week: Remove and rinse your filter with clean water to remove surface debris.
🗓️ Every Month: Deep clean your filter using Bioguard Filter Brite to remove oils and residue that simple rinsing can’t.
🗓️ Every 3–4 Months: Replace your filter entirely if it shows signs of wear or damage.
If your spa sees heavy use, or if you have multiple bathers often, you may need to clean or replace it more frequently.
Signs Your Spa Filter Needs Replacing
Even with regular cleaning, filters eventually lose efficiency. Watch for these tell-tale signs:
⚠️ Cloudy or murky water even after chemical treatment
⚠️ Reduced water flow or weak jet pressure
⚠️ Persistent odours
⚠️ Filter pleats that appear torn, crushed, or discoloured
⚠️ Shorter chemical lifespan (sanitiser used up too quickly)
If you’re noticing any of these, it’s time to upgrade to a new spa filter cartridge.
👉 View Spa Filter Cartridges for Vortex, Fisher & Sun & Soul Spas
How to Replace a Spa Filter
Replacing your spa filter is quick and easy:
1️⃣ Turn off your spa system.
2️⃣ Remove the old filter carefully to avoid debris falling into the housing.
3️⃣ Rinse the housing area to remove any build-up.
4️⃣ Insert your new filter securely.
5️⃣ Turn the system back on and check for smooth water flow.
We stock filters to suit Fisher, Vortex, and Sun & Soul spas — ensuring the perfect fit and optimal filtration performance.
How Filters Affect Water Clarity
Your spa’s filtration system works hand in hand with your Bioguard chemicals.
If your filter isn’t doing its job, even the best sanitisers and oxidisers can’t keep your water clear.
Combine regular filter maintenance with:
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Bioguard Armour for sanitation
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Bioguard Lite for oxidising
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Spa Cleaning Pack for shell and cabinet cleaning
This combination ensures sparkling, healthy water every time you step in.
Why Buy Spa Filters from Pool & Spa Shop?
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Tasmanian-owned and operated, supporting local business
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Stocking high-quality filters for top spa brands
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Australia-wide delivery with Standard and Express Post options
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Expert advice on maintenance and water care
Whether you’re replacing your first filter or keeping your spa in peak condition, we’re here to help.
👉 Shop Spa Filters & Accessories
Final Thoughts
Your spa filter is the key to maintaining clean, inviting water.
With regular cleaning, timely replacement, and the right Bioguard products, you’ll enjoy a relaxing, low-maintenance spa all year round.
Don’t wait for cloudy water — check your filter today and experience the difference of fresh, efficient filtration.