Smoke detectors must be installed wisely and maintained frequently in order to operate effectively and provide you with peace of mind. Studies have shown that escape and survival chances are higher if you detect a fire at its first stages, before it becomes too large to control using home equipment.
If sleeping areas in your home are separated (for example: in multiple-level homes), install a fire detector near each area. Although closed doors may offer some protection against fire and smoke, they may make it difficult to hear a detector alarm installed outside the bedroom. Usually, the best location is the hallway closest to the bedrooms.
The primary job of smoke detectors is to wake up sleeping persons and warn them of urgent danger. Install your detectors as close as possible to the bedrooms. Even more dangerous is the fact that if fire originates inside the bedroom, the closed door will keep the smoke from reaching and activating the detector if it is installed outside of the room
This is especially important if anyone in your family tends to smoke in bed. If your family members close their bedrooms doors while sleeping, consider installing a smoke detector inside each bedroom in addition to the one in the hallway. If you have only one main area where bedrooms are located, install it at a central point among these bedrooms.
If installed in these locations, your smoke detectors may not receive the smoke flow required to activate the alarm To prevent false alarms, don't install smoke detectors near heat sources.
Do not install smoke detectors within six inches of where walls and ceilings meet. Although the kitchen presents many fire hazards, installing a smoke detector there may cause false alarms due to smoke generated from cooking, frying, or boiling.