Whirlpool WHER25 RO Installation
The Whirlpool WHER25 under-sink RO installs the same way as larger RO systems: cold supply saddle valve, P-trap drain connection, and dedicated faucet. The 3-stage housing requires less under-sink space than 5-stage systems -- useful for small sink cabinets. Whirlpool provides installation instructions at whirlpoolwatersolutions.com and a customer support line (1-866-698-2538). Whirlpool refrigerator filter replacement: push the filter door, grip the existing filter, rotate 1/4 turn counterclockwise and pull. Insert new filter, rotate clockwise until it stops. Press and hold the filter status button on the control panel for 3 seconds to reset the reminder.