Found the same product cheaper elsewhere? Contact us to see what we can do. >> Due to high demand for courier services, transit times are slightly more than usual. Please contact us for details. >> Order before 10:30 am, and if the goods are in stock, we will ship your goods the same day. >>

Welcome to Water Filters Online

Your Water Filtration Products Specialists

At Water Filters Online, we have an extensive range of Water Filtration Products to suit your needs.

Water Filters Online are master resellers for Magnum Filters Ltd - a renowned local manufacturer and exporter of quality pool and spa filters for over 40 years. Through our NZ suppliers, we have access to the largest range of spa & pool filters in the southern hemisphere.

Why Water Filters Online?

Due to our strong supply agreement, we can provide quality, locally made products at direct import prices. Because the manufacturer is local the support network for these products is strong, meaning our customers are always taken care of long-term.

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 you home water filtration system, see our Filter Maintenance Guide.


We also stock a complete range of General and Drinking Water Filter for a whole range of application. 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 Ultraviolet 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 Part ensures that our range caters for most of the New Zealand 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 to 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. .
From $30.00 incl GST

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
From $47.50 incl GST

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

Spa-Quip SQ50

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).
From $68.40 incl GST