PHOTOELECTRIC SMOKE ALARM
Photoelectric smoke alarms use a beam of light to detect smoke. They are more responsive to fires that begin with long period of smoldering. Photoelectric smoke alarms tend to be less prone to nuisance alarms in your kitchen.
Ionization smoke alarms detect fire by sensing changes in heat and air quality in your home. They are more responsive to flaming fires, but are more susceptible to nuisance alarms due to cooking.
In Ontario, working smoke alarms are required by law on every level of the home and outside of all sleeping areas. New homes are also required to have a working smoke alarm equipped with a visual signal device (flashing strobe light) located inside each bedroom.
In rooms with peaked or sloped ceilings, smoke alarms should be installed near the top of the ceiling. They should be at least 4” down but must be placed within 3’ of the peak measured horizontally. Smoke alarms must be installed on peaked / sloped ceilings in accordance with manufacturer’s guidelines, but this graphic can be used as a guideline for where to place smoke alarms in rooms with peaked / sloped ceilings.