Experiencing low water pressure in only a single shower while other bathrooms function normally indicates a localized blockage. The most common culprit is mineral scale accumulation clogging the removable showerhead faceplate, a partially closed hot or cold supply valve behind the access panel, or a malfunctioning pressure-balancing cartridge inside that specific shower valve. Verification: Unscrew the problem showerhead and soak it in white vinegar to clear mineral crust.
1 votes
Marked as accepted