What guides are available?
Four step-by-step guides: How to Remove a Cartridge (by brand — Moen, Delta, Kohler, Pfister, American Standard), Identify Your Valve Type, How to Take a Good Photo, and Find Your Shut-off Valve.
How do I remove a Moen cartridge?
Open Guides → How to Remove a Cartridge → tap the Moen tab for brand-specific steps including the retaining clip removal and correct cartridge orientation.
How do I find my shut-off valve?
Open Guides → Find Your Shut-off Valve for instructions by home type — single family house, apartment/condo, or mobile home.