Firehouse Subs can be a reasonable fast-casual choice, but most of their menu leans heavy on sodium and calories. A small Firehouse Turkey Sub, one of the lighter options, comes in at 340 calories and 1,130 mg of sodium. That sodium count alone is nearly half the daily recommended limit of 2,300 mg, and it’s just a small sub. Order a medium or large, add cheese and mayo, and the numbers climb fast.
The chain is known for steaming its subs, loading them with deli meats, and offering generous portions. That reputation for big, hearty sandwiches is part of the appeal, but it also means most menu items aren’t built with nutrition in mind. The good news: you can make smarter choices if you know what to look for.
Where the Calories Really Come From
Deli meats are the backbone of the Firehouse menu, and they’re the biggest driver of sodium. Meats like salami, pastrami, and ham are cured or processed, which means salt is baked into the product before any toppings or sauces are added. A sub built with multiple meats, like the Hook & Ladder (smoked turkey and Virginia honey ham) or the New York Steamer (pastrami and corned beef), stacks sodium from several sources at once.
Cheese adds another layer. Provolone is standard on many subs and contributes both saturated fat and additional sodium. Sauces like mayo, mustard, and the chain’s signature Captain Sorensen’s Datil Pepper hot sauce vary widely. Mayo is calorie-dense but relatively low in sodium, while mustard is the opposite. The sub roll itself also contributes a meaningful share of carbohydrates and sodium.
The Best Options on the Menu
If you’re trying to keep things lighter, the small Turkey Sub at 340 calories is one of the better starting points. Turkey breast is among the leanest deli meats, and keeping the size small limits portion creep. For comparison, a mini Turkey and Provolone at Jersey Mike’s runs 450 calories, and a turkey sandwich at McAlister’s Deli hits 460 calories with 1,460 mg of sodium. So Firehouse’s small turkey sub holds up reasonably well against competitors on calories, though sodium is still high across the board at sandwich chains.
Other relatively lighter picks include subs built around grilled chicken or turkey breast without heavy sauces. Choosing mustard over mayo saves roughly 100 calories per serving. Loading up on lettuce, tomato, onion, and peppers adds volume and fiber without meaningful calorie cost.
The Worst Options on the Menu
The medium and large versions of multi-meat subs are where things get extreme. Subs like the Smokehouse Beef & Cheddar Brisket or the Firehouse Meatball push well past 700 to 900 calories in a medium size, with sodium counts that can exceed 2,000 mg in a single sandwich. At that point, one meal delivers nearly an entire day’s worth of sodium.
Sides amplify the problem. A bag of chips adds 200 to 300 calories and several hundred milligrams of sodium. Pairing a large sub with chips and a regular soda can push a single meal past 1,500 calories without much effort.
How to Order Smarter
A few adjustments make a noticeable difference:
- Stick with a small sub. The jump from small to medium isn’t just a few extra inches. It often adds 200 to 400 calories and a significant sodium bump.
- Choose turkey or grilled chicken. These are leaner and lower in sodium than cured meats like salami, pastrami, or ham.
- Skip the cheese or ask for light cheese. This cuts saturated fat and shaves off sodium.
- Go heavy on vegetables. Peppers, onions, lettuce, tomato, and spinach add nutrients and make the sub more filling without calorie costs.
- Swap mayo for mustard. Mustard has a fraction of the calories, though it does add a bit of sodium.
- Skip the chips. If you want a side, some locations offer fruit or a small salad.
The Sodium Problem at Sandwich Chains
It’s worth noting that high sodium isn’t unique to Firehouse Subs. It’s a structural issue across the sandwich industry. Bread, deli meats, cheese, and pickled toppings are all sodium-heavy ingredients, and a sub combines all of them. Even the “healthiest” orders at most sandwich chains tend to land between 900 and 1,200 mg of sodium for a standard serving.
For most healthy adults, an occasional high-sodium meal isn’t a concern. Your kidneys handle it. But if you’re managing high blood pressure, heart disease, or kidney issues, that 1,130 mg in a single small sub is worth paying attention to. Planning lighter, lower-sodium meals around a Firehouse visit helps balance your overall daily intake.
The Bottom Line on Firehouse Subs
Firehouse Subs isn’t a health food destination, but it’s not off-limits either. A small turkey sub with vegetables and mustard is a perfectly workable lunch at around 300 to 350 calories. The key is portion control and ingredient choices. Where people get into trouble is ordering medium or large multi-meat subs with cheese, mayo, and chips, turning a sandwich into a 1,000-plus calorie meal with a full day’s sodium. Know what you’re ordering, keep it simple, and Firehouse can fit into a balanced diet without much trouble.