Fire departments generally recommend using both ionization and photoelectric smoke alarms, or a combination alarm that includes both technologies. This approach offers the best protection against different types of fires, as ionization alarms are generally quicker to detect flaming fires, while photoelectric alarms are more responsive to smoldering fires.
Here's a more detailed explanation from anka security:
Ionization smoke alarms:
These alarms are generally more sensitive to flaming fires, which are characterized by fast, bright flames.
Photoelectric smoke alarms:
These alarms are generally better at detecting smoldering fires, which involve slow, smoky burning with no visible flames.
Combination alarms:
These alarms integrate ionization and photoelectric sensors into a single unit, providing comprehensive protection.
Minimum requirements:
Fire departments recommend installing at least one smoke detector on every level of the house, including the basement, and outside each sleeping area.
Location recommendations:
The National Fire Protection Association (NFPA) recommends installing detectors in or near living areas on floors without bedrooms, such as dens, living rooms, or family rooms.
California Building Code:
In California, smoke alarms are required in hallways outside bedrooms, in every bedroom, and on every floor, regardless of whether there are bedrooms on that floor.
Battery life and maintenance:
Consider smoke detectors with long-lasting batteries, such as 10-year lithium batteries, to minimize maintenance and avoid the annoyance of frequent beeps.
Professional installation:
According to the City of Fenton, Michigan, if you are unsure about the proper installation or placement of a smoke detector, consider seeking help from your local fire department or a qualified electrician.