1 per floor, including 1 by cooking stove
Make sure they’re the right size and type . . .
SIZE: The extinguisher’s size is indicated by a number on its label. The number represents the size of the fire (in square feet) for which the extinguisher will be effective. For example, a size of “2” indicates that the extinguisher is effective for a fire of 2 square feet. (This may not be enough for much more than a small stovetop fire.)
TYPE: The extinguisher’s type is indicated by letters on the label of the extinguisher, for example, “A, B, C.” These letters represent the types of fires/materials against which the extinguisher is effective:
“A”=common materials (wood, paper, etc.)
“B”=flammable liquids (grease, gasoline, etc.)