Why it matters
Safety criticalThis task protects people, not just the house. Do it on a schedule to make sure it gets done.
Staying on schedule matters beyond the repair bill: a consistent maintenance record is one of the factors in a home's Roots Home Health Score, and well-kept homes typically sell faster and closer to asking price.
How to do it
The garage door is the heaviest moving object in most homes. Its auto-reverse and photo-eye sensors are what stop it from crushing a child, pet, or car; both need to be tested to confirm they still work.
- Test the photo eyes: with the door open, start it closing and wave a broom through the beam near the floor. It should reverse.
- Test auto-reverse on contact: lay a solid object (a roll of paper towels) flat under the door and close it. It should reverse on touching it.
- Confirm the photo-eye lenses are clean and aligned (steady indicator lights).
- If either test fails, stop using the opener until it's adjusted or repaired.
Alternatives & optional extras
- Doors made before 1993 may lack photo eyes entirely; that's reason enough to upgrade the opener.
- Never disable a sensor that keeps tripping; realign or clean it instead.
Time: 10 minutes · Typical cost: Free to test
DIY to test and clean the sensors. Adjusting the opener's force or spring work is for a pro.
If you skip it
A door with failed safety systems can close on a person, pet, or vehicle; these are the features that prevent serious injury.
Other garage door maintenance
- Lubricate garage door rollers, hinges, and springs — every 6 months
Related systems to keep on schedule
- Roof — start with: inspect roof for damage, once a year, ideally in May
- Gutters & downspouts — start with: clean gutters and downspouts, every 6 months
- Chimney / fireplace — start with: schedule chimney sweep and inspection, once a year, ideally in September
- Siding / exterior — start with: inspect siding, trim, and exterior caulk, once a year, ideally in May