What type of fire typically involves flammable liquids?

The type of fire that typically involves flammable liquids is classified as Class B. This classification is specifically designed for fires fueled by substances like gasoline, oil, paints, and other flammable liquids. Class B fires can be particularly hazardous because these liquids can spread flames rapidly and don't respond to water, which can exacerbate the situation.

Understanding fire classifications is crucial in HVAC and other fields because it informs the appropriate type of fire extinguisher to use in emergencies. For Class B fires, extinguishers often contain substances like foam, dry chemical powders, or carbon dioxide that are effective in smothering the fire and preventing it from reigniting.

Class A fires involve ordinary combustibles like wood or paper, Class C fires involve electrical equipment, and Class D fires involve combustible metals. Each type has different characteristics and risks, emphasizing the importance of knowing the right classification to effectively combat the fire.