{"product_id":"trevoli-big-blue-replacement-filter-kit","title":"Trevoli Big Blue Genuine Replacement Filter Kit - 10 \u0026 20 Inch Jumbo Options NZ","description":"\u003cp\u003eGenuine replacement filter kits for Trevoli Big Blue whole house systems. Select your option from the dropdown and the kit arrives with the correct cartridges for your housing size and configuration — ready to swap straight in.\u003c\/p\u003e\n\n\u003cp\u003eTrevoli cartridges are genuine parts. The Dual Gradient filter in BB Kit 1 and BB Kit 4 is Pentair branded — the professional-grade dual gradient sediment cartridge used in single-housing Big Blue setups.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's in your kit\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\n\u003cstrong\u003eBB Kit 1\u003c\/strong\u003e\u003cbr\u003e10\" Jumbo, Single Housing\u003c\/td\u003e\n      \u003ctd\u003e1x Pentair Dual Gradient 25-1 sediment filter (10\" jumbo)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\n\u003cstrong\u003eBB Kit 2\u003c\/strong\u003e\u003cbr\u003e10\" Jumbo, Twin Housing\u003c\/td\u003e\n      \u003ctd\u003e\n        1x Trevoli 10PL20 — 20 micron polypleated sediment (10\" jumbo)\u003cbr\u003e\n        1x Trevoli 10PP01 — 1 micron polyspun sediment (10\" jumbo)\n      \u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\n\u003cstrong\u003eBB Kit 3\u003c\/strong\u003e\u003cbr\u003e10\" Jumbo, Triple Housing\u003c\/td\u003e\n      \u003ctd\u003e\n        1x Trevoli 10PL20 — 20 micron polypleated sediment (10\" jumbo)\u003cbr\u003e\n        1x Trevoli 10PP01 — 1 micron polyspun sediment (10\" jumbo)\u003cbr\u003e\n        1x Trevoli 10CTO05 — 5 micron carbon block (10\" jumbo)\n      \u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\n\u003cstrong\u003eBB Kit 4\u003c\/strong\u003e\u003cbr\u003e20\" Jumbo, Single Housing\u003c\/td\u003e\n      \u003ctd\u003e1x Pentair Dual Gradient 25-1 sediment filter (20\" jumbo)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\n\u003cstrong\u003eBB Kit 5\u003c\/strong\u003e\u003cbr\u003e20\" Jumbo, Twin Housing\u003c\/td\u003e\n      \u003ctd\u003e\n        1x Trevoli 20PL20 — 20 micron polypleated sediment (20\" jumbo)\u003cbr\u003e\n        1x Trevoli 20PP01 — 1 micron polyspun sediment (20\" jumbo)\n      \u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\n\u003cstrong\u003eBB Kit 6\u003c\/strong\u003e\u003cbr\u003e20\" Jumbo, Triple Housing\u003c\/td\u003e\n      \u003ctd\u003e\n        1x Trevoli 20PL20 — 20 micron polypleated sediment (20\" jumbo)\u003cbr\u003e\n        1x Trevoli 20PP01 — 1 micron polyspun sediment (20\" jumbo)\u003cbr\u003e\n        1x Trevoli 20CTO05 — 5 micron carbon block (20\" jumbo)\n      \u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eSubscribe \u0026amp; never run out\u003c\/h2\u003e\n\u003cp\u003eSet up a 6 or 12 month subscription and your replacement kit arrives automatically before your filters need changing. No reminders, no late orders, no gap in filtration.\u003c\/p\u003e\n\n\u003ch2\u003eAbout the Dual Gradient filter\u003c\/h2\u003e\n\u003cp\u003eThe Pentair Dual Gradient 25-1 is a single cartridge that does the work of two sediment stages. It filters at 25 micron on the outer layer and progressively finer toward the centre, finishing at 1 micron. This makes it well suited to single-housing Big Blue setups where space is limited but thorough sediment reduction is still needed.\u003c\/p\u003e\n\n\u003ch2\u003eHow often to replace\u003c\/h2\u003e\n\u003cp\u003eReplace cartridges every 6–12 months depending on your water quality and usage. The clearest sign is a drop in water pressure or flow rate. The pleated cartridge (where included) can be rinsed and reused between replacements — replace when it no longer recovers after cleaning.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e10\" jumbo cartridge size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" x 4.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e20\" jumbo cartridge size\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\u003eTrevoli cartridges\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFood-grade polypropylene\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDual Gradient\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePentair branded\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSold as\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKit (one set of cartridges per order)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhich kit do I need?\u003c\/h3\u003e\n\u003cp\u003eIf your system has a single Big Blue housing, choose BB Kit 1 (10\") or BB Kit 4 (20\"). For twin housings, choose BB Kit 2 or 5. For triple housings, choose BB Kit 3 or 6. If you're not sure which housing size you have, measure the length of your existing cartridge — 10 inch or 20 inch — and select accordingly.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is the Dual Gradient 25-1?\u003c\/h3\u003e\n\u003cp\u003eIt's a Pentair dual gradient sediment cartridge — one filter that transitions from 25 micron on the outside to 1 micron toward the centre. It catches coarser particles first and progressively finer particles as water moves through, combining two stages of sediment filtration in a single cartridge.\u003c\/p\u003e\n\n\u003ch3\u003eAre these genuine Trevoli parts?\u003c\/h3\u003e\n\u003cp\u003eYes — all cartridges except the Dual Gradient are genuine Trevoli. The Dual Gradient 25-1 is Pentair branded, which is the correct specification for Trevoli single-housing Big Blue setups.\u003c\/p\u003e\n\n\u003ch3\u003eCan I replace the cartridges myself?\u003c\/h3\u003e\n\u003cp\u003eYes — Big Blue housings use a standard housing spanner. Shut off the water, unscrew the housing, swap the cartridge, and reinstall. No special tools needed beyond the spanner.\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 on arrival, get in touch and we'll sort it out.\u003c\/p\u003e","brand":"Trevoli","offers":[{"title":"BB Kit 1","offer_id":45496991416364,"sku":"KIT-BB-01","price":48.0,"currency_code":"NZD","in_stock":true},{"title":"BB Kit 2","offer_id":45496991449132,"sku":"KIT-BB-02","price":60.5,"currency_code":"NZD","in_stock":true},{"title":"BB Kit 3","offer_id":45496991481900,"sku":"KIT-BB-03","price":121.0,"currency_code":"NZD","in_stock":true},{"title":"BB Kit 4","offer_id":45496991514668,"sku":"KIT-BB-04","price":81.0,"currency_code":"NZD","in_stock":true},{"title":"BB Kit 5","offer_id":45496991547436,"sku":"KIT-BB-05","price":115.5,"currency_code":"NZD","in_stock":true},{"title":"BB Kit 6","offer_id":45496991580204,"sku":"KIT-BB-06","price":225.5,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/5966\/6732\/files\/bbopt6spares_400x_0bf62036-320c-4e92-87d6-ea872cda3e8a.webp?v=1777411554","url":"https:\/\/www.filtrationstation.co.nz\/products\/trevoli-big-blue-replacement-filter-kit","provider":"Filtration Station NZ","version":"1.0","type":"link"}