PASS stands for Pull, Aim, Squeeze, Sweep — the four steps for operating a portable fire extinguisher. It is a standardized memory aid used in fire safety training worldwide and printed on virtually every consumer fire extinguisher.
Breaking Down the PASS Method
Pull
Pull the safety pin from the handle. This pin prevents accidental discharge and must be removed before the extinguisher can be operated. Grip the pin and pull it straight out — it should come out with a firm pull and may break a tamper seal. Do not squeeze the handle before pulling the pin.
Aim
Aim the nozzle or horn at the base of the fire, not at the flames. Directing the agent at the flames is ineffective — the goal is to interrupt the fuel source at the base. Stand back from the fire at the distance recommended on the label, typically 6 to 8 feet for most residential extinguishers. Keep low to avoid smoke if it is present.
Squeeze
Squeeze the handle firmly and evenly. This releases the extinguishing agent. Releasing the handle stops the discharge, allowing you to conserve agent if the fire is responding or reposition as needed. Most portable extinguishers have between 10 and 30 seconds of discharge time — use that time efficiently.
Sweep
Sweep the nozzle from side to side at the base of the fire while continuing to discharge. This ensures the agent covers the fuel source rather than concentrating on a single point. Continue sweeping until the fire appears to be out. Then watch for re-ignition — some fires reignite from residual heat. If the fire re-ignites, apply the agent again.
When to Use an Extinguisher — and When Not To
A portable extinguisher is appropriate for small, contained fires — a pan fire on a stove, a small wastebasket fire, or a fire in its earliest stages before it has spread to adjacent materials. The guidelines are strict: if the fire is larger than a wastebasket, if it is spreading, if the room is filling with smoke, or if you are not confident in your ability to operate the extinguisher and retreat safely, evacuate immediately and call 911. An extinguisher is a tool for a specific, narrow situation — not a reason to stay in a burning building.
Choosing the Right Extinguisher Class
Fire extinguishers are classified by the types of fire they extinguish. Class A covers ordinary combustibles (wood, paper, fabric). Class B covers flammable liquids (gasoline, grease, paint). Class C covers electrical fires. Most homes should have a multi-purpose ABC extinguisher, which handles the most common residential fire types. Kitchen environments benefit from a Class K extinguisher for cooking oil and grease fires — this is the type used in commercial kitchens. Do not use a Class A extinguisher on a grease fire and do not use water on a grease or electrical fire.
Extinguisher Placement and Maintenance
Extinguishers should be mounted in accessible locations — kitchen, garage, and each floor of the home. Check the pressure gauge monthly: the needle should be in the green zone. Most extinguishers have a manufacturer-recommended service interval of 6 years for internal inspection and 12 years for hydrostatic testing. After any use, even partial, the extinguisher must be recharged or replaced before being returned to service.
For a broader fire prevention framework, see our home fire safety guide. To build your household’s complete fire safety routine, our fire safety checklist covers detectors, extinguishers, escape routes, and room-by-room hazards in one reference. An escape plan that supports extinguisher use is outlined in our guide on what a fire drill safety plan includes.