What type of fire extinguisher is suitable for propane fires?

A Class B or multipurpose (A-B-C) fire extinguisher is suitable for propane fires because Class B extinguishers are specifically designed to combat flammable liquids, gases, and greases, including propane. They work by smothering the fire, which cuts off the oxygen supply and extinguishes the flames.

Multipurpose extinguishers, labeled as A-B-C, can handle a wider variety of fires—including those involving ordinary combustibles, flammable liquids, and electrical fires—making them versatile for different hazardous situations. In the case of propane, which is a flammable gas, utilizing a Class B or multipurpose extinguisher is the safest and most effective option.

Using a Class A extinguisher is not suitable for propane fires, as these are mainly for ordinary combustible materials like wood and paper. Water-based extinguishers can exacerbate a propane fire by spreading the fuel and are generally ineffective against flammable gas fires. Although foam fire extinguishers can suppress flammable liquid fires, their usage may not be as effective or safe as Class B or multipurpose extinguishers for gas fires.