Home Repair Triage Plan

The Home Repair Triage Plan: How to Diagnose 25 Common Issues

Small problems at home can feel big when you don’t know where to start. This guide gives you simple “if X then Y” steps so you can act fast and stay safe. You’ll learn how to spot the wall or system, choose the right tool, and do the next right move. No fancy language or gear needed—just clear choices that lead to quick wins.

Before you start

  • Power: If wires are involved, turn off the breaker and test for power.
  • Water: If pipes are involved, close the shut-off valve first.
  • Gas: Smell gas? Leave and call the utility.
  • Weight: TV mounts and tall shelves can fall. Use studs or rated anchors.

Water Problems

1) Dripping Faucet (sink or tub)

  1. If the drip stops when you turn the handle harder, then the internal seal is worn.
    • Remove handle → shut water under sink → replace cartridge or washer (match brand/size).
  2. If drip continues after a new cartridge, then the seats/O-rings need replacing.
  3. If handles are frozen or corroded, then spray penetrating oil and try again, or call a plumber.

2) Leak Under the Sink

  1. If water appears only when you run the faucet, then look at the trap and tailpiece.
    • Tighten slip nuts by hand + ¼ turn.
    • If cracked plastic, then replace that section.
  2. If leak shows even when faucet is off, then shut off the supply valves.
    • If the valve leaks, then replace the valve or add a new quarter-turn valve.
  3. If the sink basket is wet, then re-seal with plumber’s putty.

3) Running Toilet

  1. If you hear water trickling, then lift the lid.
  2. If the flapper looks warped or doesn’t seal, then replace the flapper.
  3. If water spills into the overflow tube, then lower the float height.
  4. If it still runs, then replace the fill valve.

4) Clogged Sink (bath or kitchen)

  1. If water drains slowly, then remove the stopper and clean hair/gunk.
  2. If still slow, then use a hand snake at the trap.
  3. If a garbage disposal is installed, then run it and flush with hot water.
  4. Never pour harsh drain acid. It ruins pipes and is dangerous.

5) Clogged Toilet

  1. If water is near the rim, then wait 10 minutes so the level drops.
  2. Use a flange plunger → 10 steady pushes.
  3. If no change, then use a toilet auger.
  4. If backup returns in other fixtures, then main line may be blocked → call a pro.

6) Water Stain on Ceiling

  1. If stain grows after rain, then likely a roof/attic issue.
    • Catch drips. Photograph. Call roofing.
  2. If stain grows after showers, then check bath fan duct and tub/shower caulk.
  3. If a pipe runs above, then look for pinholes or loose fittings.
    • Shut water. Dry the area. Repair, then repaint with stain-blocking primer.

7) No Hot Water (electric tank)

  1. If nobody used hot water for hours and it’s still cold, then check breaker and reset on the heater.
  2. If breaker trips again, then element or thermostat may be bad → call a pro.
  3. If water is warm but not hot, then increase thermostat to 120–125°F.

Power and Safety

8) No Power at an Outlet

  1. If nearby outlets also died, then check the breaker panel.
  2. If it’s only the bathroom, kitchen, garage, or outdoors, then press RESET on the nearest GFCI outlet.
  3. If still dead, then turn off breaker and check the outlet wiring or replace the outlet.

9) Breaker Tripped

  1. If the handle sits between ON and OFF, then push to OFF, then to ON.
  2. If it trips again right away, then unplug devices on that circuit and try again.
  3. If it still trips with nothing plugged in, then call an electrician.

10) Light Flickers

  1. If it’s one lamp, then tighten the bulb or replace it.
  2. If a whole room flickers, then check the switch and fixture connections (power off first).
  3. If the whole house flickers, then call the utility to check service.

11) Smoke/CO Detector Chirps

  1. If it chirps every 30–60 seconds, then replace the battery.
  2. If chirping continues, then hold TEST/RESET or replace the unit (10-year life).

12) GFCI Trips Repeatedly

  1. If it trips when you plug in one tool, then the tool may leak current → try another outlet.
  2. If it trips with any device, then the GFCI is bad or the circuit is wet → dry the area, replace GFCI.

Walls, Shelves, and Fasteners

13) Wobbly Shelf

  1. If screws are in drywall only, then replace with rated anchors or move into a stud.
  2. If in a stud but still loose, then use longer screws and a bracket with two screws per side.
  3. If shelf sags in the middle, then add a center bracket.

14) Picture Won’t Stay Level

  1. If it hangs by one nail, then switch to two hooks spaced apart.
  2. If wires slip, then use D-rings on both sides.

15) Drywall Anchor Spins

  1. If the hole is oversized, then step up to a molly or toggle.
  2. If the wall is plaster, then pre-drill slowly and use long molly/toggle.

Doors and Windows

16) Door Won’t Latch

  1. If the latch hits low/high, then tighten hinge screws first.
  2. If still off, then move the strike plate slightly and chisel the mortise.
  3. If door rubs, then sand the rub point and seal the edge.

17) Squeaky or Sagging Hinge

  1. If squeaky, then pull one hinge pin and add a drop of oil.
  2. If sagging, then drive a long screw into the top hinge into the stud.

18) Stuck Window

  1. If painted shut, then score the paint line and work a putty knife around the sash.
  2. If it slides but binds, then clean tracks and add dry silicone spray.

Kitchen and Bath

19) Garbage Disposal Jam

  1. If it hums but won’t spin, then turn off power, insert the hex key in the bottom, and turn to free the flywheel.
  2. Press RESET button. Run cold water. Test.
  3. If leaks or is cracked, then replace the unit.

20) Dishwasher Not Draining

  1. If new install, then remove the knockout plug in the disposal inlet.
  2. If old install, then clean the filter and drain hose loop.
  3. If still full of water, then the drain pump may be blocked.

21) Bathroom Fan Loud or Weak

  1. If it rattles, then clean dust from the grill and blades.
  2. If weak airflow, then check for a crushed or long duct.
  3. If noise remains, then replace the motor or full fan box.

22) Moldy Caulk Around Tub

  1. If caulk is black or cracked, then cut it out and clean with alcohol.
  2. Dry fully. Re-caulk with 100% silicone.
  3. Keep it dry 24 hours before using.

Heating and Cooling

23) Weak Airflow from AC or Furnace

  1. If filter looks gray, then replace it.
  2. If vents are closed or blocked, then open/clear them.
  3. If coil is iced, then turn system off and let it melt; call a tech to check refrigerant.

24) Heat Won’t Turn On

  1. If thermostat is blank, then replace batteries.
  2. If set to HEAT but nothing happens, then switch off and on at the furnace.
  3. If inducer or igniter doesn’t start, then call a technician.

Outdoors

25) Leaking Outdoor Hose Bib (spigot)

  1. If it leaks at the handle, then tighten the packing nut under the handle.
  2. If it leaks when off, then replace the washer or the cartridge (frost-free types).
  3. If it split after winter, then replace the whole bib and add an interior shut-off for next year.

Mini Tool List (copy this)

  • Stud finder with live-wire detect, 12V drill/driver, assorted anchors, #2 Phillips + #2 square + T20 bits
  • Utility knife, adjustable wrench, groove-joint pliers, flange plunger, hand snake/auger
  • Non-contact voltage tester, GFCI outlet tester, tape measure, bubble level, safety glasses, silicone spray

Check out our article The 80/20 Toolbox for a detailed tool list.

When to call a pro

  • Live wires you can’t identify.
  • Gas smells.
  • Repeated breaker trips with nothing plugged in.
  • Main drain backups.
  • Wet ceilings below a finished shower or a roof valley.

Conclusion

Home repair is easier with a simple map. Find the wall or system. Pick the right branch. Do one step. Most problems shrink fast when you follow a clear if X then Y path. Save this guide. Use it next time the house throws you a curve.