Designing Around Three Constraints
A food truck is a commercial kitchen squeezed into a box on wheels, and every piece of equipment you add has to fight three constraints: space, weight, and power. There is no room for the "nice to have" equipment of a full restaurant, and no utility company to call when you run out of electricity. The operators who succeed design the truck backward from the menu — the menu decides the equipment, the equipment decides the power and propane systems, and everything has to fit, weigh less than the truck's GVWR, and pass the health inspection.
Start With the Menu
Write the menu first. Every item on it creates a list of required equipment, and anything that does not support a menu item is a candidate for the cutting room floor. A burger truck needs a griddle, a fridge, a prep table, and hot holding; a taco truck needs a plancha plus a steam table; a fried-chicken truck needs a fryer with real oil capacity and ventilation to match; a coffee or shaved-ice truck needs almost no cooking equipment but serious cold storage and water systems. Build the equipment list from the menu, not from what looks good in a catalog.
Cooking Equipment
The cooking equipment is the heart of the truck, and the fuel choice shapes everything else.
- Griddles are the most versatile truck cooking surface — burgers, breakfast, tacos, grilled sandwiches. Countertop griddles in 24 to 36 inch widths fit most trucks.
- Charbroilers and open-flame grills add smoke and flavor, but they need stronger ventilation and fire suppression.
- Fryers — countertop models with 15 to 30 pounds of oil are the practical truck size. They need a Type 1 hood, fire suppression, and a plan for oil storage and disposal.
- Ranges are optional; a two- or four-burner countertop range covers sauces, soups, and small-batch cooking.
- Ovens — convection or impingement ovens appear on pizza and baked-goods trucks; a standard range oven is rare because of space.
Each cooking appliance comes in propane or electric versions. Propane is the standard for gas cooking on trucks because it is dense energy with no generator required; electric cooking appliances demand serious generator capacity.
Refrigeration and Cold Storage
Cold storage is non-negotiable — health codes require safe food temperatures, and a truck that cannot hold 41°F or below will not pass inspection.
- Undercounter reach-in refrigerators (27 to 48 inches wide) fit under prep counters and are the standard truck solution.
- Prep tables with refrigerated bases combine cold storage and work surface, saving a full counter of space.
- Freezers are optional on most trucks; a small undercounter freezer covers frozen product.
- Sandwich and salad units put cold product at reach height for line work.
Most truck refrigeration runs on 120V: generator power while you are running, and shore power, battery, or a quiet inverter overnight. Some operators add 12V DC compressor coolers for holding product while driving, which keeps the generator off the road.
Hot Holding
Food that is cooked ahead needs to stay above 140°F. Hot holding cabinets, warming drawers, and steam tables keep product at serving temperature, and a heat lamp over the pass-through does the same. These run on 120V and are modest draws, but they add up — count every watt when you size the generator.
Ventilation and Fire Suppression
This is the most regulated part of a food truck. Any cooking equipment that produces grease-laden vapors requires:
- A Type 1 exhaust hood over the cooking surface
- A fire suppression system (typically an ANSUL-style system) that discharges over the hood, the filters, and the cooking equipment
- Fire extinguishers in the required classes and locations
- Grease filters cleaned on a schedule the health department will ask about
Fire suppression is not optional, and it is not the place to save money. A system that does not match the cooking equipment will fail inspection, and a fire in a truck is a total loss.
Water and Sanitation
Mobile food units are plumbed, not plugged into a building. The typical configuration:
- A fresh water tank (30 to 60 gallons is common on full-service trucks)
- A grey water tank — often sized smaller than fresh, and it fills faster than you expect
- A water heater for hot water — required, because the three-compartment sink needs it
- A three-compartment sink for ware washing, or a two-compartment plus commercial dishwasher in some configurations
- A hand-wash sink with hot water, soap, and paper towels, positioned where the inspector can see it
Every sink and the water heater add weight and take space. Plan the plumbing layout on paper before you buy a single appliance.
Power: Generators, Shore Power, and Inverters
Power planning starts with a load calculation: add up the running watts of every appliance that runs at the same time — refrigerator, hot holding, the coffee machine, the lights — then add the startup surge of the biggest motor. Pick a generator rated comfortably above that number, because generators run best at partial load and die young at full load.
- Diesel generators are the standard for bigger trucks; they are reliable, fuel-efficient, and loud.
- Propane generators are quieter and share fuel with your cooking, but they are less fuel-efficient.
- Inverter generators are quiet and produce clean power for electronics, but they are limited in capacity.
- Shore power (plugging into a building outlet at an event) lets you run the fridge overnight without the generator.
- Batteries and solar can carry refrigeration and lights for hours, shrinking generator runtime.
Choose 120V equipment where you can. 240V equipment (large ovens, big water heaters) roughly doubles the generator cost, and most trucks are built entirely around 120V for that reason.
Propane Systems
Propane powers griddles, fryers, ranges, and sometimes the water heater and generator. The system needs DOT-approved tanks (typically two 20 to 40 pound tanks for easy swap-over), a regulator, and rigid or approved flexible lines to each appliance. Tank mounting must be secure and vented to the outside per code, and many jurisdictions limit tank size and placement. Have a licensed installer do the gas work — the health department and fire marshal will both look at it.
Space and Weight Planning
Every appliance has a footprint, and trucks are measured in inches. Undercounter equipment, countertop cooking, and multi-use tools are the survival strategy:
- Measure door openings — a 30-inch-wide reach-in will not fit through a 28-inch door.
- Look up every dimension on CookBidSpecs before you buy; a spec sheet that says "countertop" still needs its real width, depth, and height checked against your layout.
- Watch the weight: stainless steel equipment is heavy, and the truck's GVWR (gross vehicle weight rating) includes the build-out, the water, the food, and the propane. Weigh your plan before you weld the frame.
Health Code Compliance
Food trucks are regulated as mobile food units, and the equipment standards follow NSF/ANSI 2: commercial-grade equipment with smooth, cleanable surfaces — residential appliances will not pass inspection. Your local health department has specific requirements for sinks, water, temperatures, and ventilation; get the list before you buy equipment, because it varies by jurisdiction.
New vs Used: Where to Save
A full build-out is expensive, and the used market helps. Restaurant equipment auctions sell undercounter refrigerators, prep tables, countertop fryers, and griddles that are perfect for trucks — often for a fraction of retail. The same rules apply: check the specs on CookBidSpecs (dimensions, voltage, fuel type) and verify the unit fits your layout before you bid. Skip used items that must be exact — like fire suppression systems — and buy those new.
Food Truck Equipment Checklist
- Menu-first equipment list, with no orphans
- Countertop cooking sized to the truck
- Undercounter refrigeration with 120V power
- Hot holding for every pre-cooked item
- Type 1 hood and certified fire suppression
- Fresh water, grey water, and hot water systems
- Three-compartment and hand-wash sinks
- Generator sized for running load plus surge
- Propane system with approved tanks and lines
- Every dimension and weight checked against the truck
A food truck is a small kitchen with big constraints. Design around the menu, verify every spec on CookBidSpecs, and buy equipment that fits the space, the power, and the code — and you will spend your first season cooking instead of fixing.