Commercial Kitchen Equipment Reference: Types, Sizes, and Specs

Ask a supplier for a commercial kitchen equipment list and you get a catalog. Ask an operator what the gear actually is, how big it comes, and how much heat or water it needs, and you get a much shorter, more useful answer, because the whole kitchen resolves into a handful of categories and a set of typical size and spec ranges. This reference is that shorter answer: a category-by-category lookup of the equipment a commercial kitchen is built from, with the widths, depths, BTU, oil and quart capacities, and hookup notes operators reach for when they are planning a line or reading a floor plan.

Two cautions run through every line below. First, every figure here is a typical range, not a fixed standard, because dimensions, BTU, electrical, and plumbing needs vary by manufacturer and model. Confirm the exact numbers against the manufacturer spec sheet and the NSF listing before you buy or build. Second, this is the specification and sizing reference, not the price list. When you want the dollars, our commercial kitchen equipment cost case study prices the same categories end to end, and you can run your own numbers through the equipment ROI calculator.

How to use this commercial kitchen equipment reference

Read this reference as a lookup sheet, not a shopping list. Each section names an equipment category, lists the common types inside it, and gives the size or spec ranges you are most likely to meet on a spec sheet, so you can sanity-check a quote, read a floor plan, or draft an equipment schedule without memorizing a catalog. The ranges are deliberately wide because the market is wide: a two-door reach-in from one maker is not the same box as another, and the honest planning move is to treat the numbers here as a starting shape and then pull the exact figures from the model you actually intend to buy.

The single habit that keeps this reference safe is to verify before you commit. Every dimension, every BTU rating, every quart or oil capacity, and every electrical or plumbing note here is typical, and the model in front of you may sit outside the range. Confirm the exact width, depth, height, connected load, and hookups against the manufacturer spec sheet and the NSF listing, and check your local health and mechanical code, before a single line goes onto a floor plan or a purchase order. The companion beside this reference turns a few inputs about your menu and covers into an illustrative starting point for the line.

The commercial kitchen equipment reference table

The table below is the quick-lookup heart of this reference: the equipment categories, the common types inside each, and the typical size or spec ranges that follow them. Treat the ranges as planning shapes. The real widths, depths, BTU, capacities, and hookups belong to the specific model, and the last column flags the checks that matter most before you buy.

Every row here is a doorway into the sections that follow, where the ranges get their context. Run your own menu and covers through the companion beside this reference to turn these categories into an illustrative starting line, then verify each piece against its spec sheet.

Refrigeration: reach-ins, undercounters, and walk-ins

Refrigeration is the cold backbone of the kitchen, and it comes in a predictable ladder of sizes. Reach-in refrigerators and freezers are the upright boxes on and near the line, built in one, two, and three door widths that run roughly 27, 54, and 81 inches wide, with a depth commonly around 32 to 34 inches and a height that usually lands near 78 to 84 inches once the top-mount compressor is counted. Operators tend to think in door count rather than inches, because each door fronts one section of shelving. Undercounter refrigerators slide beneath a worktable at roughly 32 to 34 inches high and anywhere from about 27 to 72 inches wide, and prep-table refrigerators carry a rail of pans across the top for sandwich or pizza work, running from roughly 27 to 93 inches wide.

The walk-in cooler or freezer sits at the top of the ladder and follows a different logic, because it is modular, assembled from insulated panels into whatever footprint the space and the inventory demand, commonly starting around six by six feet and scaling up from there. A walk-in needs its own refrigeration system, a floor or floor treatment rated for it, and a drain, which is why it belongs in the buildout conversation and not just the equipment order. Because refrigeration carries a compressor, a wear item with a finite life, it is the category where buying new or near-new most often pays off, a call our used-versus-new equipment case study turns into a cost-per-working-year number and our commercial refrigerator cost case study prices in full. Confirm the exact dimensions, the electrical, and the drainage of every unit against its spec sheet and your local code.

The width figures below are the classic reach-in ladder, drawn to their own values so the door-count steps are easy to see. They are typical, not fixed, so measure the model you intend to buy.

Cooking equipment: ranges, ovens, fryers, and grills

The cooking line is the category most people picture, and it is a set of familiar machines with familiar spec anchors. A commercial gas range carries open burners commonly rated around 25,000 to 30,000 BTU each, built in 4, 6, or 10 burner layouts, often over a range oven or with a griddle or broiler section, and the range’s total connected load is roughly the per-burner rating times the count plus the oven. Ovens split into the standard or range oven, the convection oven that adds a fan for even, faster baking in a full-size pan footprint, and the combi oven, which is sized by pan count, commonly 6, 10, or 20 pan, and adds steam alongside dry heat, along with the water and drain that steam requires. Griddles or flat-tops run roughly 24 to 72 inches wide, and char-broilers roughly 24 to 60 inches, both sized to the width of grilled or seared items you run at once.

Deep fryers deserve their own note, because they are rated by oil capacity rather than by dimension, with a common single floor vat holding somewhere in the range of 40 to 50 pounds of oil, and a steady fried menu usually running two vats so one recovers while the other works. The lever across the whole cooking line is the menu: every cooking method you offer adds a machine and, just as importantly, adds to the grease hood above it, because the Type 1 hood has to cover the entire line. Gas or electric matters here too, because it decides whether you are sizing a gas line and regulator or a heavy electrical service. Read the actual BTU or wattage, the recovery time, and the connected load off each spec sheet, and size the gas, electrical, and hood to the line you actually build.

Warewashing: dish machines and the three-compartment sink

Warewashing never makes the marketing photos and never stops running, and it comes in a clear throughput ladder. The dish machine steps from an undercounter unit that fits beneath a counter for a small kitchen, to a door-type or hood machine that lifts and drops over a rack for a busier one, to a conveyor machine that pulls racks through continuously for high volume, each rated in racks per hour rather than by a single dimension. Alongside the machine, health code requires a three-compartment sink for manual wash, rinse, and sanitize, a separate handwashing sink, and usually a mop sink, none of which are optional and all of which an inspector will check before the kitchen opens.

The spec that bites in warewashing is not the machine size, it is the water and the plumbing behind it. A high-temperature dish machine needs the right final rinse temperature, which commonly means a booster heater, while a low-temperature machine sanitizes with chemicals instead, and both need adequate hot water, drainage, and often a grease-safe path for the wastewater. Sizing follows the peak, not the average, because an undersized machine in a busy kitchen creates a dish pit that backs up during the rush and pulls staff off the line. Confirm the racks-per-hour rating, the water temperature and booster requirement, the drain, and the local code for the sinks against the spec sheet and your health authority before you size the station.

Food prep: worktables, mixers, slicers, and processors

Food prep is the workbench of the kitchen, and its equipment is defined by capacity and surface rather than by heat. Stainless worktables are the foundation, commonly about 24 to 30 inches deep and running from roughly 24 up to 120 inches long, often with an undershelf, and they are among the simplest, most durable pieces in the building. Planetary mixers are sized by bowl capacity in quarts, with 20, 40, and 60 quart the common floor-model steps and smaller countertop units below that, and the right size tracks the largest single batch you mix rather than the daily total, because dense dough loads a mixer far harder than a light batter of the same volume.

Slicers and food processors round out the category. A commercial slicer is anchored by its blade diameter, commonly around 10 to 14 inches, and by whether it is manual or automatic, while food processors are sized by bowl capacity or by a continuous-feed chute for high-volume vegetable prep. Because most prep equipment is simple and durable, it is one of the safest categories to buy used, a point our used-versus-new equipment case study makes with the cost-per-year math. The lever, as everywhere, is the menu: a focused menu needs fewer specialized machines. Confirm the footprint, height, blade or bowl size, and electrical draw of each unit against the spec sheet and its NSF listing before you commit the counter space.

Holding and warming: cabinets, steam tables, and heat lamps

Holding equipment keeps cooked food at a safe serving temperature between the line and the guest, and it is sized by pan count and by length rather than by heat output. Holding and proofing cabinets are built in full and half sizes, rated by how many standard sheet or hotel pans they carry, with proofing versions adding controlled humidity for dough. Steam tables, also called hot wells, are sized by the number of wells across the pass, commonly three to six, and come in wet configurations that hold water beneath the pans and dry configurations that heat the pans directly. Heat lamps and strip warmers are sized by the length of pass they cover, holding plated food during the seconds between the line and the server.

The spec to watch in holding is the standard pan, because the whole category is built around the sheet pan and the hotel pan and their fractions. Sizing a holding cabinet or a steam table is really a question of how many pans of food you stage at once during service, which follows peak-hour volume rather than the daily total. Wet wells need a water supply or manual fill and a drain, and every heated unit carries an electrical draw that has to be planned into the circuit. Confirm the pan count, the wet-or-dry configuration, the water and drain needs, and the electrical load against the spec sheet, and check that any food-contact holding surface carries the NSF listing your health authority expects.

Ventilation: hoods, make-up air, and fire suppression

Ventilation is the category that surprises first-timers, and it is the one you cannot size from a table, because it is engineered rather than picked off a shelf. Any cooking line that produces grease-laden vapor needs a Type 1 exhaust hood over it, and the hood has to cover the full length of the line, usually extending past each end, so the hood length follows the cooking equipment rather than the reverse. With the hood come the make-up air that replaces what is exhausted, the ductwork that carries it to the roof, and the fire-suppression system that code requires above cooking equipment, all of it sized to the specific line, the local mechanical and fire code, and the building.

Two distinctions matter for reference. A Type 1 hood is the grease hood over cooking equipment that produces smoke and grease, while a Type 2 hood handles heat and moisture from equipment like a dishwasher or a non-grease oven, and the two are not interchangeable. And the fire-suppression system is not an accessory: it is an engineered, inspected, and tagged system that stands between a flare-up and a fire, and it is the line no operator should ever cut. Because the whole package is engineered and deeply site-specific, its cost swings widely from one space to the next, which our commercial kitchen hood cost case study prices on its own. Do not size a hood from a rule of thumb: have the ventilation package engineered to your actual line and your local code by a licensed contractor.

Gas versus electric and the utilities that follow

Underneath the equipment sits a utility decision that shapes the whole kitchen: gas or electric. Gas cooking equipment needs a gas line sized to the total connected BTU load, a regulator, and often a larger meter, while electric equipment of the same output needs heavy electrical service, the panel capacity to feed it, and the right circuits, so the choice ripples straight into the buildout. Neither is universally cheaper to run, because energy prices vary by location and by equipment, and the honest comparison is on the specific models and the local utility rates rather than on a general rule.

The utilities that follow the equipment are easy to underestimate on a floor plan. A gas cooking line needs its gas hookup, refrigeration and holding need power and sometimes a drain, a combi oven and a steam table need water and drainage, and a dish machine needs hot water, a booster, and a drain, so the equipment schedule is really two schedules, one of machines and one of the rough-ins that feed them. The condition of the space decides much of the cost, because a former restaurant that already carries the gas, the heavy electrical, and the floor drains lets a new operator inherit the expensive infrastructure. Confirm the connected load and the water, drain, and power needs of every unit against its spec sheet, and price the hookups against the actual space, a theme our commercial kitchen equipment cost case study develops in detail.

NSF listings and sanitation basics

The reason commercial equipment looks the way it does, smooth rounded stainless with few crevices, is sanitation, and the marker of it is the NSF listing. An NSF listing indicates a unit has been evaluated against food-safety and sanitation standards for its materials, its cleanability, and its construction, and health inspectors commonly expect food-contact and food-storage equipment in a permitted commercial kitchen to carry it. It is a frequent reason residential appliances are not allowed in a commercial kitchen, because they are not built or listed to the same cleanability standard, and it is why the cheap route of buying a home refrigerator or range for a commercial space so often fails inspection.

The practical point for this reference is that the listing is category-specific and jurisdiction-specific, so a unit listed for one use is not automatically acceptable for another, and the authority that matters is your local health department. Sanitation also drives the layout beyond the equipment itself, in the required handwashing sinks, the three-compartment sink, the separation of raw and ready-to-eat prep, and the finishes on floors and walls. Confirm the NSF listing for each piece that touches or stores food, and check your local health code for the equipment and the layout, before you treat any item on a quote as approved. When in doubt, ask the health authority directly rather than assuming a listing carries over.

How to size your kitchen by menu, covers, and throughput

Sizing a kitchen starts with a single question: what does the menu actually cook? The menu decides which of the six equipment categories you need at all, because a reheat-and-assemble concept skips most of the cooking line and its grease hood, a fry-and-grill concept needs a real line and a Type 1 hood, and a full cooking menu carries the entire list. Only after the menu sets the categories do the numbers come in, and they come from two measures: your daily covers, which drive how much you store and prep, and your busiest-hour throughput, which drives the cooking line, the hood, and the warewashing that all have to survive the rush rather than the average.

The floor space itself sorts into zones, and seeing the rough proportions helps you sanity-check a plan. The split below is an illustrative shape for a cooking kitchen, drawn to sum to one hundred percent, and its point is proportion rather than precision: the cooking line, the cold storage, and the prep and warewashing zones each take a real share, with circulation and dry storage woven through. Run your own menu and covers through the companion beside this reference to turn these ideas into an illustrative starting line, and verify every resulting dimension against the spec sheets.

Sizing refrigeration to your menu

Refrigeration scales with how much fresh inventory you hold at once, which follows your daily covers and how often deliveries arrive. A kitchen that takes frequent deliveries and runs a tight, fresh menu holds less and needs less cold storage than one that buys in bulk or runs a broad menu with many perishable components. The practical sizing move is to think in the reach-in door and the walk-in as the two tiers: reach-ins and prep-table units on the line for what the cooks touch during service, and a walk-in behind for bulk storage once the on-line refrigeration is no longer enough. A rough starting point many operators use is to add reach-in capacity as covers and menu breadth grow, then step up to a walk-in when the reach-ins would otherwise multiply past what the line can hold.

The failure modes cut both ways. Undersize the cold storage and the kitchen runs out of room, forces unsafe stacking, or takes deliveries it cannot properly store, while oversizing wastes floor space and energy on refrigeration that runs half empty. Freezer capacity follows the same logic against how much frozen inventory the menu actually uses, which for a fresh-focused menu can be modest. Because refrigeration carries the compressor risk, this is the category to buy new or near-new and to size with a little headroom rather than to the exact current need, a call our commercial refrigerator cost case study helps price. Confirm the interior capacity, the footprint, and the electrical of each unit against the spec sheet before you settle the layout.

Sizing the cooking line and the hood above it

The cooking line is sized to peak-hour throughput, not to the daily total, because the line has to keep up when every ticket lands at once. The method is to list the cooking methods the menu needs, assign a station to each, then size each station to how many of that item you fire in the busiest hour: burner count and range width to the sauté and boil load, fryer vat count and oil capacity to the fried volume, griddle and broiler width to the seared and grilled load. A menu that only assembles and reheats may need little more than counter cooking and a small oven, while a broad hot menu needs a long line with several stations, and the difference is entirely in what the menu cooks at the rush.

The hood is sized to the line, which is why the two are one decision. Because a Type 1 grease hood must cover the full length of the cooking line, every station you add lengthens the hood, increases the exhaust and make-up air, and raises the ventilation cost, so a disciplined menu is cheaper to ventilate as well as to equip. This is the coupling first-timers miss: the range they choose and the hood they must build are the same conversation. Have the hood, make-up air, and fire suppression engineered to your actual line and local code by a licensed contractor rather than sized from any table, and price that package early with our commercial kitchen hood cost case study, because it drives much of the layout and the budget.

Sizing warewashing to peak covers

Warewashing is sized to the rush, not the average, because a kitchen that cannot clean fast enough during the peak runs out of clean plates exactly when it is busiest. The throughput ladder maps roughly onto volume: an undercounter dish machine suits a small kitchen with a modest peak, a door-type or hood machine handles a busier one, and a conveyor machine serves high volume, each rated in racks per hour that you match against the racks of ware you turn at the peak. The three-compartment sink sits alongside the machine as a code requirement and as the backup for pots, pans, and anything the machine cannot take, so it is never optional regardless of the machine you choose.

The hidden sizing constraints are hot water and space. A high-temperature machine needs a booster to hit its final rinse temperature and enough hot water to sustain the peak, while a low-temperature machine leans on chemical sanitizer, and both need a dish pit with room to stack soiled and clean ware without crossing them. Undersizing the pit or the machine creates a bottleneck that pulls staff off the line during the rush, which is a service failure as much as a hygiene one. Confirm the racks-per-hour rating, the water temperature and booster requirement, the drainage, and the local code for the sinks against the spec sheet and your health authority, and size the whole station to the covers you turn at peak.

Reading a manufacturer spec sheet

The spec sheet is where every range in this reference becomes a real number, and learning to read one is the single most useful skill in equipping a kitchen. A commercial spec sheet, sometimes called a cut sheet, lists the exact overall dimensions and the crated dimensions, the connected load in BTU for gas or in watts and amps for electric, the water and drain requirements, the plug or hardwire configuration, the clearances the unit needs, and the certifications it carries. The overall dimensions tell you whether the piece fits the plan and the crated dimensions tell you whether it fits through the door, which are two different questions that trip up more than one buildout.

The connected load is where the spec sheet feeds the utilities. The BTU rating sizes the gas line and regulator, the amperage and voltage size the circuit and the plug, and the water and drain lines flag the plumbing rough-in a floor plan has to carry. The certifications line is where you confirm the NSF listing and any electrical and gas safety listings, which matter for inspection. The discipline is simple: never plan a line, cut a purchase order, or promise a contractor a rough-in from a range in a reference like this one. Pull the actual spec sheet for the actual model, read the dimensions, the connected load, the hookups, and the listings off it, and plan from those verified numbers.

Electrical, plumbing, and gas rough-in

The equipment schedule is only half the plan, because every piece of equipment implies a rough-in behind the wall or under the floor, and the rough-ins are where a floor plan meets the real cost of a buildout. A gas cooking line needs a gas supply sized to its total connected BTU with a regulator and shutoffs, a large electric line needs the service and panel capacity to feed it, refrigeration and holding need dedicated circuits, and any wet equipment, from the combi oven to the steam table to the dish machine, needs a water supply and a drain, often with a booster for the dish machine. The rough-in schedule is essentially the equipment schedule translated into utilities.

The lever on this whole line is the condition of the space, which is why the equipment plan and the lease are the same conversation. A former restaurant that already carries the heavy electrical, the gas, the floor drains, and a compliant hood lets a new operator inherit the most expensive infrastructure, while a bare shell needs all of it built from scratch, which is one reason the same equipment can cost far more in one storefront than another. Local code governs much of it, from grease interceptors to backflow prevention to the electrical and mechanical requirements, and it varies widely by jurisdiction. Confirm every unit’s hookups against the spec sheet, involve a licensed contractor and your local authority before you sign a lease, and treat a former food space as the substantial head start it usually is, a point our how to open a restaurant case study develops.

From spec sheet to budget

A reference like this one answers what the equipment is and how big it comes, but the next question is always what it costs, and the two are separate exercises for a reason. Sizes and specs are relatively stable properties of the equipment, while price swings with the model tier, new versus used, the condition of the space, and the ventilation and installation package, so a spec range and a price range are different animals. Once you have used this reference to settle the categories and the sizing, move to the cost side with clear eyes, because the priciest line is frequently the ventilation package rather than any single appliance.

Our cost coverage picks up exactly where this reference leaves off. The commercial kitchen equipment cost case study prices the whole kitchen category by category, the commercial refrigerator cost case study and the commercial kitchen hood cost case study go deep on the two lines that most often lead the budget, and the used-versus-new equipment case study and the buy-versus-lease equipment case study decide how to acquire and pay for it. Run your own sized equipment list and its payback through the equipment ROI calculator so the reference becomes a plan with a number attached, not just a schedule of boxes.

Common equipment sizing mistakes

The sizing mistakes that hurt most are the ones that look fine on paper and fail during the rush. The first is sizing to the daily average instead of the peak hour, which produces a cooking line and a dish pit that keep up on a slow afternoon and collapse on a busy night, because the equipment that matters is the equipment that has to survive the rush. The second is forgetting that the hood follows the line, so an operator adds a fryer or a broiler late in planning and discovers the grease hood, the make-up air, and the fire suppression all have to grow with it, at a cost that dwarfs the appliance. The third is planning from a reference range instead of the actual spec sheet, then finding the real unit is deeper, taller, or heavier than the plan assumed.

The subtler mistakes are about utilities and fit. Buying gas equipment for a space wired for electric, or the reverse, forces an expensive utility change that can exceed the equipment savings. Ignoring the crated dimensions leads to the classic scene of a walk-in panel or a range that will not fit through the door. And treating residential equipment as a shortcut usually fails inspection on the NSF and cleanability standards a commercial kitchen requires. The cure for all of them is the same discipline: size to the peak, keep the hood and the line as one decision, and verify every dimension, load, and listing against the spec sheet and local code before you commit.

A worked example: sizing a quick-service line

Put the framework on one illustrative kitchen: a quick-service counter that fries, grills, and holds food, turning a busy lunch rush. Start with the menu, which needs a fry station, a griddle station, and some counter cooking, so the categories are set: a cooking line with a fryer bank and a griddle, refrigeration to hold the day’s fresh inventory, prep tables to build orders, a holding setup to stage cooked food for the counter, warewashing to keep up at the rush, and a Type 1 hood over the fry and griddle line. The menu, not a catalog, has already drawn the equipment list.

Now the numbers, all illustrative and to be verified. For the fried and grilled volume at the peak hour, the line might carry two fryer vats near 40 to 50 pounds each so one recovers while the other works, a griddle sized to the burger and sandwich load, and a modest range or counter cooking for sides. Refrigeration might run a couple of reach-in doors and a prep-table unit on the line with a small walk-in behind for bulk, prep might be two or three worktables, holding a steam table of a few wells and a small holding cabinet, and warewashing a door-type machine sized to the peak racks plus the required three-compartment sink. The hood is engineered to cover the full fry-and-griddle line. Run your own covers and menu style through the companion beside this reference to generate a starting line like this one, then verify every dimension, BTU, and hookup against the spec sheets and your local code before anything is ordered.

The bottom line

A commercial kitchen is less mysterious than a supplier catalog makes it look: six equipment categories, a set of typical size and spec ranges, and a sizing logic that always begins with the menu. Reach-ins ladder by door count near 27, 54, and 81 inches, walk-ins are modular, range burners anchor around 25,000 to 30,000 BTU, fryers are rated by oil capacity near 40 to 50 pounds, mixers step by the quart, and the Type 1 hood follows the length of whatever cooking line the menu demands. Hold those anchors in mind and a floor plan or a quote stops being opaque.

The two disciplines that keep this reference safe are worth repeating. Size to the peak and to the menu, treating the cooking line and its hood as a single decision, because the equipment that matters is the equipment that survives the rush. And verify everything: every dimension, BTU, capacity, electrical and plumbing need, and NSF listing here is a typical range, and the real numbers belong to the specific model and to your local code, so confirm them against the manufacturer spec sheet and your health and mechanical authorities before you buy or build. When you are ready for the dollars, move from this reference to our commercial kitchen equipment cost case study and run your sized list through the equipment ROI calculator so the plan carries a number, not just a schedule.

This reference is educational material for operators planning a commercial kitchen, not engineering, code, or purchasing advice, and it endorses no specific brand, model, or supplier. Every dimension, BTU rating, oil and quart capacity, and electrical or plumbing note here is an illustrative typical range meant to teach how the equipment categories fit together, and the real specifications belong to the individual model on its manufacturer spec sheet. Sizes, connected loads, NSF listings, hood and fire-suppression requirements, and local health, mechanical, and fire codes vary widely by jurisdiction and change over time, so confirm the exact figures with the manufacturer, a licensed contractor, and your local authority on the actual equipment and space in front of you before you buy, build, or commit a floor plan.