Asked: Why is my smoke alarm going off?

We went over to a friends house and when we came back the smoke alarms were going off like crazy. It seems to always happen when its cold outside, I don't understand it?! We already just a couple of weeks ago replaced the batteries. What are suppose to do?

Answers:

Answered:
Dust will set them off, did you clean it when you replaced the batteries?I vacuum mine to keep dust out, it helps.



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