Test and Replace the Batteries in Smoke Detectors

Smoke detectors should be tested monthly, and the batteries should be replaced every year, so it’s a good habit to make this part of your regular spring maintenance routine. Test the batteries by simply pressing the ‘test’ button and making sure the unit chirps. Even if it works, replace the battery (or back-up battery, if your is a hardwired model) and re-test it. If the alarm does not pass the test, replace it immediately. Smoke detectors have a lifespan of 10 years, so look for a ‘replace by’ sticker or date embossed on the inside of the unit to see if it needs to be replaced, even if it passes the chirp test. If you can’t find a date, replace it anyway immediately. On new detectors, make sure to write the ‘installed’ date on the inside cover on a piece of masking tape.