Calculate the minimum flow rate you need from a whole house water filter based on household size and peak demand.
Household Details
Water Usage
High means simultaneous use of multiple fixtures — showers running while dishwasher and laundry are on.
Whole house filters reduce pressure by 5-15 PSI. Low incoming pressure needs a higher flow rate filter to compensate.
Filter Type
Carbon block filters have higher pressure drop than sediment filters. Water softeners need adequate flow for regeneration cycles.