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Welcome to Water Filters Online

At Water Filters Online, we have an extensive range of Water Filtration Products to allow us to provide for all our customers filtering needs. 

Water Filters Online are Master Reseller Agents for Magnum Filters Ltd—the renowned local manufacturer and exporter of quality pool and spa filters for over  40 years. Through our NZ supplier, we have access to the largest range of spa & pool filters in the Southern Hemisphere.

Due to our strong supply agreement, we are able to provide quality, locally made products at direct import prices. As an added bonus, because the manufacturer is local the support network for these products is strong, customer satisfaction is always ensured and remains remain the number one priority.

Here at Water Filters Online, we go above and beyond cartridge filter replacements and servicing. We can even help you maintain your own pool or spa filters NZ-wide, so you don’t need to replace them as often. For more on how to maintain your home water filtration system, see our Filter Maintenance Guide.

We also stock a complete range of General and Drinking Water Filters for a whole range of applications. Need a filter for your home, apartment, fridge, or tank water? No matter what you’re looking for, we can help you out. See the options below for other types of water filters made locally here in NZ. Whether it is Ultra Violet Parts, Fridge Filters, Spa & Pool Filters or General Water Treatment Parts we will have a solution for you.

Our close relationship with one of the premier importers and Distributors of Quality Water Filtration Parts ensures that our range caters for most of the NZ Market's needs. If you can't find the product you are looking for, please email us with some details to or ring and leave a message for us to call you back on 0800 936 426, and in no time at all, we will have you kitted out with a quality water filtration product.    


Hot Spring C30

Out Side Diameter is 150. Length is 260. Bottom End Cap is 50mm hole. Top End Cap is 50mm hole. .
$34.00 incl GST

or 6 weekly interest-free payments from $5.67 with what's this?

Alpine Spas 18

OD is 143mm, Length is 160, Top is handle, Bottom is 46mm Coarse Thread. Fits Alpine Spa Models: San Marino, Santorini, Monaco, Mont Blanc, Whistler, Blackburn, Makalu, Montana, Vermont, Summit, Matterhorn, Sierra, Lucania, McKinley, Vancouver, Munro, Everest, K2
$51.00 incl GST

or 6 weekly interest-free payments from $8.50 with what's this?

Spa-Quip SQ50 (Trueform)

Out Side Diameter is 143. Length is 227. Bottom End Cap is 53mm hole. Top End Cap is 53mm hole. 2 required for Leisurerite Spas. Joined with metal clip (not supplied).
$72.00 incl GST

or 6 weekly interest-free payments from $12.00 with what's this?

Stoked Spas 30

Out Side Diameter is 118. Length is 296. Bottom End Cap is 46mm MPT thread. Top End Cap is Handle. .
$71.00 incl GST

or 6 weekly interest-free payments from $11.83 with what's this?