One should be installed in each sleeping room, and on every level, including the basement. Smoke detectors are not recommended for kitchens, bathrooms, attics, or garages. These areas are prone for nuisance alarms. In these areas you can install heat detectors to increase your protection. In other areas do not substitute heat detectors for smoke detectors.
Smoke detectors activate quicker then heat detectors.
Install smoke detectors according to manufacturer specifications. Replace batteries at least once a year, and never borrow the battery for other appliances. Never disconnect the detector because of nuisance alarms. Test your detector at least once a month, and clean your detector at least twice a year using a vacuum cleaner. Sprinklers control fires quickly and efficiently with less water damage than is common from fire department hoses.