The Harmsco HB-20-1W Hurricane BetterBlend filter cartridge has a 1-micron nominal rating, making it effective for removing fine sediment, silt, rust particles, cysts (such as Giardia and Cryptosporidium), and other small particulates from your water supply. This precision-wound polypropylene cartridge is ideal for applications requiring high-purity sediment reduction in whole-house or commercial filtration systems using Harmsco Hurricane housings.

The Harmsco HB-20-1W is a 20-inch cartridge designed to deliver a maximum flow rate of up to 20 GPM when installed in a compatible Harmsco Hurricane or BetterBlend housing. Its high dirt-holding capacity extends service life, but replacement is typically recommended every 6 months or sooner if you notice a pressure drop exceeding 15 PSI across the housing. Service life varies based on incoming water quality and sediment load.

The HB-20-1W is specifically engineered for Harmsco Hurricane and BetterBlend series filter housings that accept a single 20-inch cartridge, including models such as the HUR-20, HUR-90-BB, and similar Harmsco single-cartridge systems. Always confirm your housing model accepts the BB (big blue) style 20-inch cartridge before ordering to ensure a proper seal and optimal performance.

The Harmsco HB-20-1W is constructed from 100% FDA-compliant polypropylene media with no binders, adhesives, or surfactants, making it safe for potable water applications. The cartridge features Harmsco's signature Up-Flow design and is manufactured to meet NSF/ANSI Standard 42 material requirements. Its all-polypropylene construction ensures chemical compatibility and resists bacterial growth.

To install the HB-20-1W, shut off the water supply and relieve pressure from your Harmsco housing, then unscrew the sump and remove the old cartridge. Insert the new HB-20-1W onto the center post, ensuring it seats properly on the bottom O-ring. Reassemble the housing, slowly turn the water back on, and flush for 3–5 minutes before use. Monitor the pressure gauge and replace the cartridge every 6 months or when pressure drop indicates the filter is loaded with sediment.