It is important that you have the proper placement for your smoke detectors. Install your alarms at least 20 feet from appliances like furnaces and ovens, which produce combustion particles. Alarms should be at least 10 feet from high humidity areas like showers and laundry rooms, and at least 3 feet from heat/AC vents. Be sure to install a smoke detector in each bedroom, and one at the top of each stairwell.