Check the lint filter, vent path, and exterior outlet for visible problems, then know when a dryer needs qualified service before it runs again.
Home Safety guides
Check what was connected and look for visible damage after a GFCI trip, then stop resetting and call a qualified electrician if the cause is unclear.
Choose a short- or long-term radon test, follow its placement instructions, record the result, and know when to confirm it or contact a qualified professional.
If you smell or hear a possible gas leak, leave immediately without switching lights or using a phone inside, then call emergency services or the gas utility from well away from the building.
Treat a fallen or damaged power line as energized, keep people away from it and anything touching it, and call emergency services from a safe location.
After a small clean-water plumbing leak, record what got wet, dry promptly when safe, and distinguish a small mold cleanup from damage that needs professional help.