Safety Tips: Fire Extinguishers

A fire extinguisher is an essential safety tool for any home, but choosing, using, and maintaining one can feel overwhelming. Understanding the basics can help you stay prepared.

Fire extinguishers are designed for small, contained fires—not large or spreading ones. Only use an extinguisher if:

• The fire is small and not growing
• You have the right type of extinguisher for the fire
• The extinguisher is easily accessible and in working condition
• You have a clear escape route in case the fire spreads

If the fire is too big or you're unsure, get out immediately, close the door behind you to slow the fire, and call 911.

Fire extinguishers are classified by type (the extinguishing agent they use) and class (the type of fire they are designed to combat). Using the wrong extinguisher can be hazardous. Here’s a breakdown of their classifications:

• Class A (labeled with a triangle) – For common combustibles like wood, paper, cloth and plastics
• Class B (labeled with a square) – For flammable liquids such as gasoline, grease, oil and paint
• Class C (labeled with a circle) – For electrical fires, including wires, outlets, and appliances
• Class D (labeled with a star) – For flammable metals, mainly used in laboratories
• Class K – For cooking fires involving vegetable oils, animal fats and grease (used in kitchens and restaurants)

Some extinguishers combine multiple classes, like ABC extinguishers, which are ideal for home use or BC extinguishers, commonly found in garages and kitchens.

Each extinguisher has a rating number that indicates how much fire it can put out—the higher the number, the greater the capacity, but also the heavier it is. Choose an extinguisher that is approved by independent testing labs like UL (Underwriters Laboratory) or FM (Factory Mutual) and one you can comfortably handle.

When using a fire extinguisher, remember the PASS method:

• Pull the pin to unlock the extinguisher
• Aim the nozzle at the base of the fire
• Squeeze the handle to release the extinguishing agent
• Sweep side to side until the fire is out

Watch for rekindling. If the fire reignites and your extinguisher is empty, evacuate immediately and call 911.

Miami-Dade Fire Rescue offers fire extinguisher training for businesses and residents serviced by the department. Visit the Fire and Life Safety Programs for more information and to schedule a training.