{"product_id":"waimana-20-inch-jumbo-carbon-block-filter","title":"Waimana 20 Inch Jumbo Carbon Block Filter - 5 Micron, Chlorine \u0026 Taste Removal NZ","description":"\u003cp\u003eA 5 micron activated carbon block cartridge for 20 inch jumbo housings. The Waimana 20CTO05 removes chlorine taste and odour from your water — the stage that makes the biggest difference to how your water tastes and smells at every tap.\u003c\/p\u003e\n\n\u003cp\u003eThe 20 inch jumbo format delivers a higher flow rate of 75 L\/min and greater carbon capacity than a 10 inch cartridge — the right choice for larger homes and high-demand installations. Like all carbon block cartridges, it also catches fine sediment as a secondary function at 5 micron.\u003c\/p\u003e\n\n\u003cp\u003eWaimana is our value cartridge — solid quality, fair price, no frills.\u003c\/p\u003e\n\n\u003ch2\u003eKey specs at a glance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMicron rating: 5 micron\u003c\/li\u003e\n  \u003cli\u003eSize: 20 inch jumbo (20\" x 4.5\")\u003c\/li\u003e\n  \u003cli\u003eFlow rate: 75 L\/min\u003c\/li\u003e\n  \u003cli\u003eMaterial: Activated carbon block (polypropylene core and end caps)\u003c\/li\u003e\n  \u003cli\u003eOperating temperature: 5–45°C\u003c\/li\u003e\n  \u003cli\u003ePressure range: 1–4 bar\u003c\/li\u003e\n  \u003cli\u003eNot reusable — replace when taste returns or flow drops\u003c\/li\u003e\n  \u003cli\u003eSold as: Single cartridge\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy choose the Waimana 20CTO05\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eRemoves chlorine taste and chemical odour from mains and tank water\u003c\/li\u003e\n  \u003cli\u003e5 micron rating also catches fine sediment as a secondary function\u003c\/li\u003e\n  \u003cli\u003eActivated carbon adsorbs organic compounds — not just physical filtration\u003c\/li\u003e\n  \u003cli\u003e75 L\/min flow rate suits larger homes and high-demand installations\u003c\/li\u003e\n  \u003cli\u003eGreater carbon capacity than a 10 inch cartridge — longer service life\u003c\/li\u003e\n  \u003cli\u003eFits most 20 inch jumbo housings — compatible with Trevoli, Pentair, Puretec, and other major brands\u003c\/li\u003e\n  \u003cli\u003eFood-grade construction — safe for use in drinking water systems\u003c\/li\u003e\n  \u003cli\u003eGreat value — reliable performance at a straightforward price\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow it works\u003c\/h2\u003e\n\u003cp\u003eActivated carbon has an enormous surface area at the microscopic level. As water passes through the carbon block, chlorine, chemical compounds, and organic taste and odour molecules are adsorbed onto the carbon surface and removed from the water. This is a chemical process — not just physical trapping — which is why carbon blocks are so effective at improving taste and smell.\u003c\/p\u003e\n\u003cp\u003eThe carbon is consumed over time as the adsorption sites fill up. When the carbon is exhausted, taste and odour will return even if flow rate is still good. That's the signal to replace the cartridge — not just pressure drop.\u003c\/p\u003e\n\u003cp\u003eCarbon block cartridges are not designed to be cleaned and reused.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20CTO05\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicron rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 micron\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 inch jumbo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20\" x 4.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlow rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e75 L\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eActivated carbon block (polypropylene core and end caps)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5–45°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePressure range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1–4 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReusable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSold as\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle cartridge\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible with\u003c\/h2\u003e\n\u003cp\u003eFits most 20 inch jumbo housings (20\" x 4.5\"), including:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTrevoli whole house systems\u003c\/li\u003e\n  \u003cli\u003ePentair housings\u003c\/li\u003e\n  \u003cli\u003ePuretec housings\u003c\/li\u003e\n  \u003cli\u003eWaiora Ultra II and Ultra III UV systems\u003c\/li\u003e\n  \u003cli\u003eOther 20 inch jumbo housings (4.5 inch diameter cartridge)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot suitable for 20 inch standard housings (2.5 inch diameter) or 10 inch housings. Check your housing takes a 20 inch x 4.5 inch cartridge before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhat does a carbon block filter actually do?\u003c\/h3\u003e\n\u003cp\u003eIt removes chlorine, chemical compounds, and organic tastes and odours from your water. Activated carbon works through adsorption — compounds bond to the carbon surface and are removed from the water as it passes through. The 5 micron rating also catches fine sediment as a secondary function.\u003c\/p\u003e\n\n\u003ch3\u003eHow is a carbon block different from a sediment filter?\u003c\/h3\u003e\n\u003cp\u003eSediment filters physically trap particles. Carbon blocks do that too, but their primary function is chemical — removing taste and odour compounds through adsorption. If your water smells or tastes of chlorine, a carbon block is what addresses it. A sediment filter alone won't.\u003c\/p\u003e\n\n\u003ch3\u003eHow is the 20 inch version different from the 10 inch?\u003c\/h3\u003e\n\u003cp\u003eThe 20 inch jumbo format contains more carbon media — this means a higher flow rate (75 L\/min vs 40 L\/min), greater carbon capacity, and longer service life. It's the better choice for larger households and high-flow installations.\u003c\/p\u003e\n\n\u003ch3\u003eHow often do I need to replace it?\u003c\/h3\u003e\n\u003cp\u003eWe recommend replacing every 6–12 months depending on your water quality and usage. The clearest signal for a carbon block is taste and odour returning — not just a pressure drop. If your water starts tasting or smelling of chlorine again, it's time to replace the cartridge.\u003c\/p\u003e\n\n\u003ch3\u003eCan I clean and reuse this cartridge?\u003c\/h3\u003e\n\u003cp\u003eNo. Carbon block cartridges are not reusable. The activated carbon is consumed as it adsorbs compounds from your water — rinsing won't restore it. Replace when taste returns or flow drops.\u003c\/p\u003e\n\n\u003ch3\u003eWill it fit my housing?\u003c\/h3\u003e\n\u003cp\u003eIt fits most 20 inch jumbo housings — these take a cartridge that's 20 inches long and 4.5 inches in diameter. If you're not sure of your housing size, measure the inside diameter before ordering. Get in touch if you're not sure.\u003c\/p\u003e\n\n\u003ch3\u003eDo I need a sediment filter before the carbon block?\u003c\/h3\u003e\n\u003cp\u003eYes, in most cases. A carbon block works best when the water entering it is relatively clear. In high-sediment water, a polyspun or pleated sediment filter upstream will protect the carbon block and extend its life. Most whole house systems use sediment stages before the carbon block for this reason.\u003c\/p\u003e\n\n\u003ch3\u003eDo I need special tools to change the cartridge?\u003c\/h3\u003e\n\u003cp\u003eJust the housing wrench that came with your system. Shut off the water first, unscrew the housing, swap the cartridge, and reinstall. A quick rinse of the housing while it's open is good practice.\u003c\/p\u003e\n\n\u003ch3\u003eIs it suitable for drinking water?\u003c\/h3\u003e\n\u003cp\u003eIt's made with food-grade materials and is suitable for use in drinking water systems. The spec sheet cautions that it should not be used with microbiologically unsafe water without adequate disinfection — so if your water source carries biological risk, pair it with a UV system downstream.\u003c\/p\u003e\n\n\u003ch3\u003eWhat warranty applies?\u003c\/h3\u003e\n\u003cp\u003eFilter cartridges are consumables and don't carry a standard product warranty. If you receive a cartridge that is visibly damaged or defective, get in touch and we'll sort it out.\u003c\/p\u003e","brand":"Waimana Water","offers":[{"title":"Default Title","offer_id":45492446232620,"sku":"20CTO05","price":85.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/5966\/6732\/files\/6_Waimana20_CarbonBlockFilter.jpg?v=1777330809","url":"https:\/\/www.filtrationstation.co.nz\/products\/waimana-20-inch-jumbo-carbon-block-filter","provider":"Filtration Station NZ","version":"1.0","type":"link"}