
Filter Cartridges 20 Inch Jumbo
Discover our range of ultraviolet light water filtration systems, service kits and parts for pure and clean drinking water.
-
WSFC4J20 - Jumbo 20" Cartridge Set Of 4
Regular price $312.80 NZDRegular priceUnit price / perExcl. GST: $272.00 NZD -
WSFC4J20T - Jumbo 20" Cartridge Set of 4
Regular price $423.20 NZDRegular priceUnit price / perExcl. GST: $368.00 NZD -
WSI-CTO45-2005 Jumbo 20" CTO Coconut Carbon 5 Micron Cartridge
Regular price $161.00 NZDRegular priceUnit price / perExcl. GST: $140.00 NZD -
WSI-PPC45-2001 - Jumbo 20" Melt Blown Cartridge 1m
Regular price $50.60 NZDRegular priceUnit price / perExcl. GST: $44.00 NZD -
WSI-PPC45-2005 - Jumbo 20" Melt Blown Cartridge 5m
Regular price $50.60 NZDRegular priceUnit price / perExcl. GST: $44.00 NZD -
WSI-PPC45-2020 - Jumbo 20" Melt Blown Cartridge 20m
Regular price $50.60 NZDRegular priceUnit price / perExcl. GST: $44.00 NZD -
WSI-PTC45-2001 - Jumbo 20" Pleated Cartridge 1m
Regular price $66.70 NZDRegular priceUnit price / perExcl. GST: $58.00 NZD -
WSI-PTC45-2005 - Jumbo 20" Pleated Cartridge 5m
Regular price $60.95 NZDRegular priceUnit price / perExcl. GST: $53.00 NZD -
WSI-PTC45-2020 - Jumbo 20" Pleated Cartridge 20m
Regular price $60.95 NZDRegular priceUnit price / perExcl. GST: $53.00 NZD -
WSI-PTC45-2050 - Jumbo 20" Pleated Cartridge 50m
Regular price $60.95 NZDRegular priceUnit price / perExcl. GST: $53.00 NZD -
WSI-CTO45-2020 Jumbo 20" CTO Coconut Carbon 20 Micron Cartridge
Regular price $161.00 NZDRegular priceUnit price / perExcl. GST: $140.00 NZD
Collection:
20 Inch Water Filters Across New Zealand
Having a dependable water filtration system is essential for maintaining clean and safe water in your home or business. 20 inch water filters are a great choice for those needing higher-capacity filtration with improved flow rates. Designed to handle larger volumes of water, these filters efficiently remove sediment, chlorine, and other contaminants, ensuring consistently clean water.
At UV Water Systems, we offer 20 inch water filters in all major cities in New Zealand, including Auckland, Wellington, Christchurch, Manukau City, Hamilton, Tauranga, Dunedin, Lower Hutt, Palmerston North, Rotorua, Hastings, Nelson, Napier, Whangarei, New Plymouth, Invercargill, etc., providing outstanding filtration solutions for residential, commercial, and industrial applications.
Why Choose a 20 Inch Water Filter?
Compared to standard 10-inch filters, 20 inch water filters provide:
Longer Lifespan: A larger surface area means the filter lasts longer before needing replacement.
Better Flow Rate: Ideal for high-demand systems where water pressure and flow consistency are important.
More Effective Filtration: Captures more impurities due to its larger size, enhancing overall water quality.
Versatile Applications: Suitable for homes, businesses, and industries that require a reliable and efficient filtration system.
Whether you need a 20 inch water filter for a whole-house system, commercial kitchen, or industrial use, choosing the right filter ensures optimal performance and clean, purified water.
When Should You Replace a 20 Inch Water Filter?
Regular maintenance is key to keeping your water filtration system functioning properly. Here are some signs that it may be time to replace your 20 inch water filter:
Reduced Water Pressure: If water flow slows down, the filter may be clogged with sediment and debris.
Changes in Water Taste or Smell: If your water starts tasting or smelling different, it could mean the filter is no longer removing impurities effectively.
Visible Dirt or Discoloration: A filter that looks darkened or visibly dirty should be replaced to ensure continued efficiency.
Usage-Based Wear: Depending on water quality and usage, most 20 inch filters should be changed every 6–12 months.
Need help determining the right replacement schedule? Our team at UV Water Systems can guide you in maintaining your filtration system for the best performance.
Why Buy 20 Inch Water Filters from UV Water Systems?
At UV Water Systems, we provide high-quality 20 inch water filters that meet international filtration standards. Here’s why we’re a trusted supplier:
Premium Filtration Technology: Our filters effectively remove contaminants, improving water clarity and safety.
Durable and Reliable: Made from high-performance materials for long-lasting use.
Wide Compatibility: Suitable for various water filtration systems, including whole-house and industrial setups.
Expert Support: Our knowledgeable team helps you choose the best filter for your needs.
Allow us to provide you with the best 20 inch water filters in all of New Zealand's major cities, including Auckland, Wellington, Christchurch, Manukau City, Hamilton, Tauranga, Dunedin, Lower Hutt, Palmerston North, Rotorua, Hastings, Nelson, Napier, Whangarei, New Plymouth, Invercargill, etc.High-Quality Filtration: Our cartridges effectively remove contaminants, ensuring clean and safe water.
Maximize Water Quality with a 20 Inch Filter
Investing in a 20 inch water filter is a smart choice for ensuring a steady supply of clean, high-quality water in your home or business. These larger filters offer superior performance and you can extend their life by doing the following:
Choose the Right Filter Type: Select a sediment, carbon block, or specialty filter based on your water quality needs.
Replace Filters on Time: Follow manufacturer guidelines to prevent clogging and maintain efficiency.
Monitor Water Pressure: A sudden drop in pressure may signal a clogged filter that needs replacement.
Perform Routine Maintenance: Check for leaks, worn-out seals, and buildup to keep the system in top condition.
Use a Pre-Filter if Needed: Helps extend the life of your main filter by capturing larger debris.
Test Your Water Regularly: Identify any changes in contaminants and adjust filtration if necessary.
Order Your 20 Inch Water Filter in New Zealand Today
If you’re looking for 20 inch water filters throughout New Zealand, UV Water Systems has a range of premium options to suit your filtration needs. Whether for residential or commercial use, our filters provide reliable performance and long-lasting durability.
Our Service Areas
- Auckland
- Christchurch
- Dunedin
- Nelson
- Rotorua
- Wellington
- Hamilton
- Palmerston North
- Napier
- Invercargill
- New Plymouth
- Whangārei
- Tauranga
- Gisborne
- Lower Hutt
- Porirua
- Maraetai
- Hastings
- Upper Hutt
- Queenstown
- Oamaru
- Balclutha
- Matamata
- Greymouth
- Ngāruawāhia
- Mosgiel
- Timaru
- Kawerau
- Kaitaia
- Oxford
- Milton
- Paekākāriki
- Levin
- Blenheim
- Pahiatua
- Lincoln
- Kihikihi
- Paeroa
- Pōkeno
- Paraparaumu
- Marton
- Tokoroa
- Kaikohe
- Kaiapoi
- Whakatāne
- Kerikeri
- Alexandra
- Leeston
- Waitara
- Masterton
- Taupō
- Hokitika
Contact UV Water Systems for the Best 20 Inch Water Filters Across New Zealand

Frequently Asked Questions
Find answers to common questions about UV water filtration systems and the purchasing process.
Which UV Filtration System should I get?
Each system is designed for specific needs. Below is a summary of these systems:
- WSC4 200W UV 4- Filter System:
Designed and tested for rain and ground water (bore, lake and stream).
The 4 filters, a 20 micron pleated paper for broken down leaf matter, heavy sands and sediment, 5 micron pleated paper minor sands and sediment, 5 micron coconut shell carbon for taste, smell, discolouration and chemicals that may get in the water like for example roundup off the roof. Then a 1 Micron melt blown filter for small floating matter. All designed to perfectly clean the water.
Then an off set dual 100 watt UV sterilizer for the bacteria like Giardia and Cryptosporidium.
This is a light commercial system for very large houses, food manufacturers, breweries, clinics, hospitals and schools etc. - (WSR3) 80W UV 3-Filter System):
Designed and tested for rain and ground water (bore, lake and stream).
The 3 filters, a 5 micron pleated paper for sands, sediment and broken down leaf removal a 5 micron coconut shell carbon for taste, smell, discolouration and chemicals that may get in the water like for example roundup off the roof. Then a 1 Micron melt blown filter for small floating matter. All designed to perfectly clean the water.
Then an off set UV sterilizer for the bacteria like Giardia and Cryptosporidium.
Our most popular system with over 5000 in homes around New Zealand.
Ideal for medium to large houses or properties with known water issues. - (WSR2) 40W UV 2-Filter System:
Designed and tested for rain water.
The 2 filters, a 5 micron pleated paper for sands, sediment and broken down leaf removal a 1 micron melt blown filter for small floating matter.
Then an off set UV sterilizer for the bacteria like Giardia and Cryptosporidium.
This system is designed for smaller houses with no perceived water issues. - (WSBS) 80W UV 1-Filter System:
Onsite grey water secondary Treated Septic Tank Discharge: Uses a coarse 50 micron pleated paper filter with a high-output 95W lamp; ensures safe water discharge into streams or gardens.
Can I install a system myself?
Yes, it comes with a full instruction manual, however we do advise that you have it checked and signed off by a registered master plumber.
Can these systems be installed outside?
We offer a variety of systems tailored for different applications, and according to plumbers, ours is the only truly 'outside compatible' option available.
Our systems feature an all-weather impervious alloy cover, ensuring durability. Additionally, the power supply is fully encased within its waterproof box, preventing moisture infiltration. We use Gel-filled ballasts to isolate the circuitry effectively.
Moreover, our systems come with added protection, including surge protectors and RCBOs. These features not only prevent electrical damage but also assist in identifying faults.
Does it need 240 Volts?
Yes, it has a UV lamp to kill the bacteria, which requires input voltage of between 110 to 240 volts, which is stepped up by the ballast to over 400 volts.
How long does the whole UV system last?
Depending on its location, the system should provide a minimum of 20 years of service. It's essential to understand the three component groups:
- Consumables: Includes seals and lamp cartridges, typically replaced every 6 to 12 months.
- Replaceables: Involves items like quartz sleeves, filter o-rings, power supply, and jumbo filters, which are typically replaced every 3 to 10 years.
- Durables: Long-lasting components such as backing boards, covers, chambers, brackets, and pipe fittings, designed to last up to 20 years.
Each component group plays a vital role in the system's functionality and longevity.
How much does it cost to install a filtration system?
Depending on where the system is to be installed and the type of connection piping used, it can be from as little as $250+GST.