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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).
You must also be a U.S. citizen to become a firefighter. You must pass a background check and in some instances, a drug screening as part of the requirements to be a firefighter.irefighting 101. by FireRescue1 Staff. The first step in a career in firefighting is to find out what the requirements are to be a firefighter in the location where you plan to be employed. The requirements to be a firefighter in a large metropolis like New York City or Chicago are extremely stringent.