How often should I change the batteries in the smoke detectors and carbon monoxide detectors?
Ideally you would perform the test once every month and change the batteries every six months. A good rule of thumb is to change the batteries when you change the time on your clocks in the fall and spring.

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1. How often should I change the batteries in the smoke detectors and carbon monoxide detectors?
2. How many calls does the fire department respond to in a year?
3. Why are fire hydrants painted different colors?