Understanding Fire Extinguishers and how to use them
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Understanding Fire Extinguishers: Which One to Use and How to Use It

Published On: February 10, 20253.7 min read

Understanding fire extinguishers may initially sound like a boring topic, but knowing basic information could save lives. There are five main types of fire extinguishers, each designed for specific types of fires. Using the wrong extinguisher can make a fire worse, so it’s important to understand which one to use.

Pro Tip: For homes, a multi-purpose ABC fire extinguisher is ideal, as it covers most common household fires.

A visual for a better understanding fire extinguishers

Class A – For Ordinary Combustibles

  • Best for: Fires involving wood, paper, cloth, and plastics.

  • Not for: Electrical or grease fires.

  • Common Locations: Living rooms, bedrooms, garages, offices.

  • What’s Inside? Water or foam to cool and smother flames.

Class B – For Flammable Liquids

  • Best for: Gasoline, oil, paint, and grease fires.
  • Not for: Electrical fires or ordinary combustibles.
  • Common Locations: Kitchens, garages, workshops.
  • What’s Inside? CO2 or dry chemical to remove oxygen from the fire.

Class C – For Electrical Fires

  • Best for: Fires involving wiring, outlets, circuit breakers, and appliances.
  • Not for: Water-based extinguishers, which conduct electricity.
  • Common Locations: Every room with electrical equipment.
  • What’s Inside? Non-conductive dry chemicals to stop electrical fires.

Class D – For Metal Fires (Industrial Use)

  • Best for: Magnesium, titanium, aluminum, and sodium fires.
  • Not for: Home use—typically used in factories and labs.
  • Common Locations: Industrial settings, manufacturing plants.
  • What’s Inside? Special powdered agents that smother burning metals.

Class K – For Cooking Fires (Grease & Oils)

  • Best for: Fires from vegetable oil, animal fats, and cooking grease.
  • Not for: Water-based extinguishers, which cause grease fires to spread.
  • Common Locations: Kitchens (commercial and home).

  • What’s Inside? Wet chemical agents that cool and suppress flames.

Different Types of Fire Infographic

How to Properly Use a Fire Extinguisher

Knowing where your fire extinguisher is located isn’t enough—you need to know how to use it effectively in an emergency.

Remember the P.A.S.S. technique:

PULL the pin – This breaks the tamper seal.

AIM at the base of the fire – Not the flames, but the fuel source.

SQUEEZE the handle – Release the extinguishing agent.

SWEEP side to side – Cover the fire area until it’s out.

If the fire doesn’t go out within seconds or starts to grow, evacuate immediately and call 911.

pass method infographic

Where to Keep Fire Extinguishers in Your Home

For maximum safety, fire extinguishers should be placed in easy-to-reach areas, such as:

  • Kitchen – Near the stove, but not too close to prevent heat damage.

  • Garage – Near flammable materials like gas cans or power tools.

  • Bedrooms – In case of electrical fires from heaters or appliances.

  • Laundry Room – Near the dryer, a common fire source.

  • Living Room – Close to fireplaces, candles, or holiday decorations.

Don’t hide them! Fire extinguishers should be visible and accessible at all times.

Common Mistakes to Avoid with Fire Extinguishers

  • Not Checking Expiration Dates: Fire extinguishers expire! Check the pressure gauge monthly and replace them as needed.

  • Using the Wrong Type: Never use water on grease or electrical fires—it makes them worse!

  • Spraying Too Far Away: Stay within 6 to 10 feet for best results.

  • Not Practicing: Make sure everyone in your household knows how to use an extinguisher before an emergency happens.

When to Call a Professional

If you’ve used your fire extinguisher, had an electrical fire, or need expert advice on home safety, call Speck Family Electric. Our licensed electricians can:

  • Inspect and replace damaged electrical wiring.

  • Install surge protection to prevent electrical fires.
  • Ensure your home meets current safety codes.

Call the Speck Family Electric office today at 1-931-288-4773 to schedule a home safety check! Shana will be happy to get you on our schedule to ensure your family stays safe.

Fire Safety is a Must

Safety starts with preparation. Take a moment today to check your extinguishers, refresh your fire safety plan, and make sure your home is protected!

Join the “Selfie with a Technician” Challenge!

We’d love to see how you’re staying safe! Share your progress with us by tagging @SpeckFamilyElectricLLC on Facebook and using the hashtag #SafetyWithSpeck. Don’t forget to participate in our Selfie with a Technician Challenge for a chance to be featured!

Stay safe and let’s make this year the safest yet for your family.

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