Most Popular
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Greenway UV lamp GAUV-15s
Regular price $135.00 NZDRegular priceSale price $135.00 NZD -
RFC20-BB ACTIVATED CARBON 20" JUMBO
Regular price $175.00 NZDRegular priceSale price $175.00 NZD -
Plunge pools filters
Regular price $100.00 NZDRegular priceSale price $100.00 NZD -
Greenway UV lamp GAUV-10s
Regular price $135.00 NZDRegular priceSale price $135.00 NZD -
20" Jumbo Sediment Filter Twin Pack – 20 + 5 Micron
Regular price $100.00 NZDRegular priceSale price $100.00 NZD -
800gpd Reverse Osmosis Membrane
Regular price $200.00 NZDRegular priceSale price $200.00 NZD
Collection: Reverse Osmosis Domestic Systems
Reverse osmosis provides high-quality drinking water by separating dissolved contaminants through a fine membrane.
This collection contains our domestic and high-output direct-flow RO equipment, along with the matching replacement filters needed to keep compatible systems operating correctly.
Why choose reverse osmosis?
- Reduces a broad range of dissolved contaminants
- Improves drinking-water taste and clarity
- Suitable for homes, offices and higher-demand applications
- Direct-flow systems can deliver purified water without a bulky storage tank
Choose a system or replacement pack
If you are installing reverse osmosis for the first time, choose a complete system and confirm your water pressure, plumbing connection, available space and expected daily demand.
If you already own a Direct Flow RO system, check the exact model before ordering replacement filters. Replacement packs are model-specific and are not complete filtration systems.
Get the sizing right
Membrane output varies with incoming pressure, temperature and water quality. For help selecting a system, contact The Filter Guy with your water source, household or workplace demand, available space and any water-test information you have.
We can also quote larger or specialised RO systems that are not listed online.