Replace the cartridge/washer and O-rings; clean the valve body. Flush lines before reassembly. See Dripping Faucet Fix.

Unscrew and descale the aerator; clean inlet screens at supply hoses. Verify stops are open; check PRV setting. Guide: Aerators.

For single-handle, replace cartridge. Add/adjust point-of-use TMV and set hot-limit stop. Stabilize system pressure. See Tempered Water.

Hand-tighten slip nuts, align washers, and reseat the trap. Replace cracked trap or gasket. Test with a sink-full dump. See Drain Basics.

Re-epoxy or reset clips to manufacturer spec; add support brackets if needed. Recaulk perimeter with mildew-resistant sealant. See Sink Mount Types.

Descale head/handheld, clean valve inlet screens, confirm stops fully open. Check home pressure (45–60 psi ideal). For multi-outlet, upsize trunk or use volume controls. Flow Tips.

Replace worn cartridge. If pressure-balance struggles, upgrade to thermostatic valve. Set max temp stop and balance hot water recirculation. See Mixer Basics.

Remove trim, descale/clean the diverter cartridge, replace seals. If tub-spout diverter, replace spout. Match brand/series for compatibility. System Planning.

Verify rough-in plaster guard range. Use extension kit from the same brand or reset valve body to spec. Rough-In Checklist.

Install water-hammer arrestors near quick-closing valves; secure loose piping. Verify PRV not set too high; aim for ~60 psi. Pressure Guide.

Replace tub-spout diverter or mixer cartridge. Ensure proper pipe routing; cap unused ports. Troubleshooting.

Recaulk surface joints, but address membrane: inspect/repair waterproofing and pan liner; flood-test. Consider liquid/sheet system redo. Waterproofing Primer.

Replace flapper or canister seal; adjust chain length and water level. Clean fill-valve screen. Toilet Repair.

Clear rim/siphon jets (descale). Verify tank waterline and flapper lift. Check trap or drain for partial blockage. Toilet Guides.

Replace wax/rubber ring, shim bowl to level, and torque closet bolts evenly. Inspect flange height/condition. Toilet Install.

Remove hair/debris at strainer, clean trap, and flush with hot water. Use enzyme cleaner; avoid harsh acids. Snake if recurring. Drain Basics.

Refill dry P-traps, reseal slip joints, and replace cracked traps. Check venting and clean overflow. Venting Guide.

Set/replace PRV to ~60 psi. Add expansion tank on closed systems to protect fixtures. Pressure Tips.

Reduce simultaneous outlets, increase tank FHR, or upsize tankless capacity at winter inlet temps. Insulate and balance recirculation. Heater Sizing.

Wipe after use; descale with diluted vinegar. Avoid abrasives and harsh acids. Consider whole-home softener in hard-water regions. Finish Care.

Remove old sealant, clean with isopropyl alcohol, dry fully, then apply mildew-resistant silicone. Tool smooth; cure per label. Caulking Guide.

Check power (batteries/transformer), clean sensor window and inlet strainers, recalibrate range. Confirm solenoid click; replace if failed. Touchless Basics.

Reduce sensor range; adjust angle to avoid reflections. Improve lighting stability; set timeouts/lockouts. Shield from sunlight. Sensor Calibration.

Reseat/refill cartridge, verify viscosity compatibility, clean nozzle and tube, replace peristaltic pump if worn. Check power. Soap Guide.

Install/adjust anti-scald TMV or thermostatic valve. Set max temp stop and verify outlet temp. Safety Guide.

Re-mount within reach ranges; add slide bar for handhelds; maintain knee clearance under lavs. Provide visual indicators for sensors. Accessibility.

Match trim, valve, and diverter by brand and series. Use OEM adapters only if supported. Avoid mixing incompatible parts. Valve Compatibility.

Sum gpm, verify valve capacity, upsize to 3/4″ trunk, and add volume controls. Limit simultaneous outlets or use digital control. Planning Guide.