The Family Handyman on MSN

How To Install a Hard Wired Smoke Detector

Follow these steps for easy and safe installation.
Protect your home the right way. This tutorial shows how to hardwire a smoke and CO detector combo, including how to locate ...
Q. How often do I need to replace my hard-wired smoke detectors? And who should I hire to do this? Our 15-year-old system has five detectors. A few are chirping, and it doesn’t stop even when we ...