How Often Should You Change Your Hard Wired Smoke Detector. Your detectors are overdue for replacement according to the National Fire Protection Association which recommends that you replace detectors when theyre 10 years old. The alarms respond appropriately to the test buttons.
Many of these fire alarms detect smoke as well as carbon monoxide. With a low battery announcement disconnect the unit and replace the batteries. They are hard-wired into our electrical system but that doesnt mean you need an electrician to replace them.
However most smoke alarms still have a 9-volt battery with needs to be replaced every 6 months.
With a low battery announcement disconnect the unit and replace the batteries. Because the battery is inbuilt you may have to change the entire system after 10 years of active usage. That or yearly sounds practical for a battery-operated unit. Most hard-wired smoke detectors have a connection from the electrical wires to the smoke detectors that engages and disengages.
