Firehouse Subs Guides

1 insider guide from real Firehouse Subs workers.

Firehouse Subs is a fast casual restaurant chain specializing in hot subs. Their unique competitive advantage is their custom steamer setup, which heats meats and cheeses while retaining moisture. Read our breakdown of their steaming process and assembly line flow.

Firehouse Subs Steaming: How Every Sub Gets Made

Jun 8, 2026

Firehouse Subs steams their meats and cheeses before building the sandwich. Here's the exact process and why the steam makes a measurable difference.