Description
Overview
This replacement cartridge is designed to fit Happy Kiwi Spas that use the Deluxe Spa 50 style filter. It supports steady water flow and helps keep the spa clear by catching fine debris and everyday build-up. The size matches the factory filter, so installation is simple and does not require tools. If your spa is not a Happy Kiwi model, checking the measurements or comparing against RD50 sizing will help confirm the right fit.
Key Features
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NZ compatible replacement for Happy Kiwi Spa systems
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Matches the Deluxe Spa 50 style used in many local spa models
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Helps maintain clear water by trapping debris and fine particles
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Easy drop-in installation with no tools required
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Durable pleated media suited to regular spa use
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Reliable internal support core to maintain shape under flow
Where It’s Used
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Happy Kiwi Spa models that specify a Deluxe Spa 50 filter
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Homes, rentals, and baches with small to mid sized spa units
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General maintenance setups needing a straightforward filter swap
Compatibility
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Outside diameter: 124 mm
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Length: 338 mm
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Internal diameter: 55 mm
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For Happy Kiwi Spa systems
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If your spa is not a Happy Kiwi model, you may need the RD50 filter instead
How to Install
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Turn the spa system off or place it into standby
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Remove the old filter and rinse the filter well
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Place the new cartridge into the existing housing
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Check water flow once the spa is running again
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Rinse the new filter regularly to extend its life
Appearance
A white pleated cartridge with a 124 mm outer diameter and a 55 mm internal opening, built to match the Deluxe Spa 50 sizing.
Pro Tip
If your previous filter clogged quickly, give the new one a weekly rinse during heavy spa use to help keep the pump running smoothly.
FAQs
1. How do I know this is the right filter for my spa?
If you own a Happy Kiwi Spa that specifies a Deluxe Spa 50 filter, this is the correct size. If your spa brand differs, measuring the old cartridge helps confirm whether you need this or the RD50.
2. How often should I replace this filter?
Most spa owners replace filters every six to twelve months. Heavy spa use, sunscreen, oils, or frequent guests may shorten the lifespan.
3. Can I clean and reuse this filter?
Yes. Rinsing with fresh water helps extend its life. Avoid harsh cleaners or high pressure sprays as these can damage the pleats.
4. Will it improve water clarity straight away?
It will help the circulation system handle debris more efficiently. If the water is cloudy, chemical balancing may also be needed.
5. Do I need a technician to install it?
No. The filter is designed for simple, tool free installation and drops straight into the existing fitting.