TO REPORT AN EMERGENCY: DIAL 9-1-1

What are firefighters breathing from their air tanks?

Firefighters breathe compressed air, NOT oxygen when using their self-contained breathing apparatus. The cylinders are filled with air using a filter system to obtain the cleanest air possible. The mask has what is called a “demand valve” which only brings air into the mask during inhalation (breathing in). The air is cool, which makes the firefighter more comfortable during a hot fire fight.