How to Use a Fire Extinguisher: The PASS Method Explained Step by Step (2026)
Most people have seen a fire extinguisher hanging on a wall — but very few know how to use one correctly when it actually matters. In stressful fire situations, even small mistakes waste critical seconds and can make the fire worse. This guide will teach you exactly how to use a fire extinguisher using the PASS method, when to use it, and the common mistakes you must avoid.
Key Takeaways
- The PASS method stands for Pull, Aim, Squeeze, and Sweep — the four steps for operating any standard fire extinguisher safely and effectively.
- Fire extinguishers should only be used on small, contained fires when a clear exit route is available behind you.
- Aiming at the base of the fire — not the flames — is the most critical technique for effective suppression.
- Correct extinguisher selection depends on the fire class — using the wrong type can spread the fire and create serious injury risk.
- Monthly inspections confirm the extinguisher is fully charged, undamaged, and ready for emergencies.
- Evacuation is always the safer option when smoke is heavy, the fire has spread beyond one item, or you feel unsafe.
- Regular fire safety training reduces panic, improves response time, and builds the muscle memory needed in real emergencies.
What Is the PASS Method for Using a Fire Extinguisher?
The PASS method is a four-step fire extinguisher technique that stands for Pull, Aim, Squeeze, and Sweep — and is the universally recognised standard for operating portable fire extinguishers safely. It is used in fire safety training programmes globally, from OSHA compliance courses to workplace fire warden certifications.
The method works because it breaks a high-stress action into four simple, memorable steps that can be executed quickly even under pressure. Each step addresses a specific part of the extinguisher operation — unlocking, targeting, activating, and applying — in the correct sequence. According to the NFPA, portable fire extinguishers controlled or extinguished fires before the fire service arrived in over 80% of reported incidents where they were used — Source: NFPA, 2023. For a complete overview of extinguisher types and their compatibility with different fires, read our guide on types of fire extinguishers explained.
Why Is Knowing the PASS Method Important?
Knowing the PASS method is important because it gives you a structured, reliable response during the most stressful seconds of a fire emergency — when panic, confusion, and urgency combine to make improvised responses dangerous.
Without the PASS method, the most common instinct is to spray at the visible flames. This is ineffective. The flames are a result of combustion, not the source of it — the fuel at the base is what sustains the fire. Aiming at flames wastes agent and leaves the fuel burning. Moreover, most portable extinguishers discharge for only 8 to 25 seconds depending on type and size — Source: BSI, BS 5306-3, 2017. Every second of misdirected discharge reduces your chance of successful suppression. For workplace fire safety checklist guidance that includes PASS method training requirements, consult your premises fire safety plan.
What Should You Do Before Using a Fire Extinguisher?
Before operating a fire extinguisher, you must assess three conditions: the fire size, your exit route, and the extinguisher type. Skipping this assessment — even briefly — is the difference between a safe first response and a dangerous one.
Ask yourself:
- Is the fire small enough to tackle? If flames have spread beyond a single item, reached the ceiling, or produced heavy smoke, do not attempt suppression — evacuate immediately
- Is my exit route clear? Always position yourself with an unobstructed exit behind you. Never let the fire get between you and the exit
- Is this the correct extinguisher? Confirm the label colour matches the fire type — black (CO2) for electrical fires, yellow (wet chemical) for kitchen oil fires, red (water) or cream (foam) for ordinary combustibles
Additionally, confirm the fire alarm has been activated and emergency services have been called before you attempt suppression — even if you believe the fire is small. These two actions happen before you reach for the extinguisher, not after. For emergency evacuation procedures that work alongside your extinguisher response, your workplace fire plan should specify these steps clearly.
How Do You Use a Fire Extinguisher Step by Step?
Using a fire extinguisher involves aiming at the base of the fire rather than the flames, and following the four PASS steps in sequence without rushing. Here is the complete process.
[Insert image: Four-panel illustration showing each PASS step — Pull pin, Aim at base, Squeeze handle, Sweep side to side — with clear action labels | Alt text: “How to use a fire extinguisher PASS method showing Pull Aim Squeeze Sweep steps”]
Step 1 — Pull
Pull the safety pin firmly from the handle to break the tamper seal and unlock the extinguisher for discharge. The pin is a small metal ring or clip seated through the handle mechanism. Without removing it, the handle cannot be compressed. Grip the extinguisher body firmly with your non-dominant hand before approaching the fire.
Step 2 — Aim
Aim the nozzle or hose low, directing it at the base of the fire — the fuel source — not the visible flames above it. This is the step most people get wrong under pressure. The flames are a symptom; the base is the cause. For CO2 extinguishers specifically, never grip the horn directly — it drops to approximately -78°C during discharge and causes severe cold burns on contact.
Step 3 — Squeeze
Squeeze the handle or lever firmly and steadily to begin releasing the extinguishing agent. The discharge is immediate and continuous while the handle is held down. You can release the handle to pause discharge if you need to reposition — this conserves agent for the most effective application angle. Most extinguishers have between 8 and 25 seconds of discharge time, so controlled application matters.
Step 4 — Sweep
Sweep the nozzle slowly from side to side across the base of the fire, working from the nearest edge toward the back. Maintain a slow, steady sweep — moving too fast reduces penetration; moving too slow wastes agent in one spot. Continue until the fire appears fully extinguished, then watch the area for at least 60 seconds for signs of reignition — particularly with dry powder or CO2 agents that provide no lasting cooling effect.
If the fire does not visibly reduce within 10 seconds of correct application, stop and evacuate immediately.
When Should You NOT Use a Fire Extinguisher?
Evacuation is the safest option when a fire spreads rapidly, produces heavy smoke, or blocks your exit route — fire extinguishers are designed for small, early-stage fires only, and attempting to fight a fire beyond that scope puts lives at risk.
Do not attempt to use an extinguisher if:
- The fire has spread to more than one item or reached the ceiling
- The room is filling with thick or toxic smoke
- You do not have the correct extinguisher type for the fire class
- Your exit route is compromised or unclear
- You feel unsure, untrained, or unsafe at any point
In all of these scenarios, close doors behind you as you evacuate — a closed door can slow fire spread significantly — call emergency services, and proceed to your designated assembly point. For how to create a fire emergency plan that specifies these decision points clearly for your team, consult your workplace fire risk assessor.
Which Extinguisher Should You Use for Different Fires?
Class A fire extinguishers are designed for ordinary combustible materials such as paper, wood, and cloth, while other fire classes require specific agents that match the fuel type.
| Fire Type | Correct Extinguisher | Label Colour | Never Use |
|---|---|---|---|
| Class A — wood, paper, cloth | Water or Foam | Red / Cream | — |
| Class B — flammable liquids | Foam or CO2 | Cream / Black | Water |
| Electrical fires | CO2 or Dry Powder | Black / Blue | Water, Foam |
| Class F — cooking oils | Wet Chemical | Yellow | Water, CO2 |
| Class D — metals | Specialist Dry Powder | Blue (specialist) | Water, CO2, Foam |
For detailed guidance on electrical fire prevention tips and why CO2 is the specified response for live equipment fires, refer to our Class C fire guide. For how to prevent kitchen fires and wet chemical extinguisher placement in commercial kitchens, refer to your kitchen fire safety documentation.
What Should You Do After Using a Fire Extinguisher?
After using a fire extinguisher, the immediate priority is to report the incident, remove the used extinguisher from service, and arrange inspection or replacement before the area returns to normal use. A partially discharged extinguisher cannot be left in position — it must be treated as non-operational.
The post-use steps are:
- Report the incident to your fire safety responsible person and log it in the fire safety record
- Remove the extinguisher from its mounting and attach a clear “out of service” label
- Contact your service provider to recharge or replace it — most extinguisher types can be recharged rather than replaced
- Commission a post-fire inspection of the area before restoring normal occupancy, particularly if any structural element, electrical installation, or equipment was affected
For a full fire extinguisher maintenance checklist covering monthly checks, annual servicing, and the 5-year extended service requirements, refer to your BAFE-accredited provider’s documentation.
What Should You Do Next?
The most important next step is to practise the PASS method before you need it — not during a real emergency. Muscle memory built through practice dramatically reduces panic response time.
Take these three actions this week:
- Locate every extinguisher in your home or workplace, check its label colour, and confirm it matches the fire risk in that area
- Verify service dates — any extinguisher with a service label older than 12 months should be serviced before relying on it
- Book or attend a fire extinguisher training session — hands-on practice with a discharged or training extinguisher is the most effective way to build the confidence the PASS method requires
For fire safety training for employees that includes practical extinguisher operation, fire warden courses are widely available from accredited providers and satisfy workplace compliance requirements.
Conclusion
The PASS method — Pull, Aim, Squeeze, Sweep — is the four-step technique that gives anyone the ability to safely operate a fire extinguisher during a small, early-stage fire. The steps are simple, but execution under pressure requires familiarity built through training, not improvisation on the day.
Remember the essentials: assess before you act, aim at the base not the flames, use the correct extinguisher for the fire class, and evacuate without hesitation if the fire does not respond. Check your extinguishers today. Practice the steps. Know your exit. That preparation, done once and maintained regularly, is what real fire safety confidence looks like.
Written by: SHANKAR PAREKAR, Fire Safety Specialist — Brief expertise of 27 years of experience in commercial fire risk assessment and fire safety compliance across industrial and commercial sectors.
Reviewed by: SHIV DASS, BAFE-registered fire safety engineer and certified fire risk assessor with expertise in BS 5306 compliance and industrial fire suppression systems.
Disclaimer: This article was initially drafted using AI assistance. It has undergone thorough revisions and fact-checking by human editors and subject matter experts to ensure accuracy.