This deal is extra-hot because Firehouse Subs is not known for many deals or discounts, unlike another well-known sub shop. The sandwich chain just introduced its Snack Time Combo for $5, which includes a small sub, chips and drink (22-oz.) Get the deal every day from 2 p.m. to 5 p.m. at participating locations. There are 21 shops in Colorado, with more opening soon.