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â If you are dedicated, though donât have time to run your EMT training in parallel with your fire training, and assuming you are hired by the department on your first attempt, it will take you 3.5 to 4 years to become a firefighter (though you will be a probationary firefighter after 3 â 3.5 years).
This is the minimum age requirement for being a firefighter. However, in some states, you will have to be at least 21 to apply, so look in to the requirements in your own state. 2. Have a high school diploma or its equivalent. You'll need to have a high school diploma or a GED to apply to be a firefighter.