Our smoke detectors in our home go off in the middle of the night for no reason. It starts w/ one and then before you know it all of them are going off. We have tried to vacumn them but they still go off at least once a month. They are only 4 years old.

tkrussell

Dust collects deep in the chamber of detectors, and can be difficult to clean. Best to replace all of them, they are not too expensive.

At least if you know which one starts, it may be in a dusty area and get dirtier than the others.

They are probably all interconnected, so one goes off they all do.

An area that has a lot of moisture , like a basement, may aslo cause nusinance alarms.

bhayne

There are three wires connected to each detector. The black and white are power. Undo the pigtail to the third wire and the smoke detectors operate independantly. Then you can isolate and replace the culprit!!

Stratmando

Some smokes will have LED to indicate culprit.

ebaines

On some models if the battery gets low the alarm will "chirp" - are the batteries fresh in all detectors?

pelle

Had the same problem, went off at 2 am .. identified the problem one and changed only to have the same thing occur with another one 3-4 weeks latter changed them all and upgraded some to carbon monoxide/ smoke .. these were electric dectors tied together. As long as you are at it make sure you have a couple of the battery types if yours aren't battery backup just in case the electric is out or put out by afire.. Better to be safe then sorry !!!!

Stratmando

Where I live They want Electric, with Battery Backup, Interconnected, And wireless Interconnected are acceptable. They Need Power, have battery backup, but interconnecting, is wireless.