When designing a commercial restaurant kitchen, the distance between cooking equipment and the exhaust hood matters.
The hood needs to be close enough to capture:
- Grease
- Smoke
- Heat
- Steam
- Cooking vapors
but it also needs to provide enough working space above the equipment.
So how much space should there be?
There is no single hood-to-equipment distance that applies to every commercial kitchen.
For many canopy-style commercial hoods, the lower edge of the hood is positioned several feet above the cooking surface. Model mechanical codes commonly limit the distance between the front lower edge of a canopy hood and the cooking surface to no more than 4 feet.
However, the actual permitted mounting range can be more specific depending on:
- Hood manufacturer
- Hood model
- Type of cooking equipment
- Cooking surface temperature
- Whether the hood has lights
- Hood listing
- Local requirements
Commercial hood manufacturers may specify an approved mounting range directly on the hood documentation or nameplate.
This guide explains how much space is commonly left between restaurant cooking equipment and a hood, why hood height matters, what hood overhang means, and what restaurant owners should check before designing a cook line.
What Distance Are We Actually Measuring?
When people ask how much space should be between a hood and restaurant equipment, they can be referring to several different measurements.
These include:
- Cooking surface to bottom edge of hood
- Cooking surface to grease filters
- Equipment edge to hood edge
- Equipment to nearby walls
- Hood to combustible building materials
These are different measurements and should not be confused with one another.
Cooking Surface to Hood Height
The most common measurement is from the top cooking surface to the lower front edge of the hood.
For a typical canopy hood, commercial mechanical code provisions commonly limit this vertical distance to:
No more than 4 feet between the cooking surface and the front lower lip of the hood.
That does not mean every hood should automatically be installed exactly 48 inches above the equipment.
The hood manufacturer's listed mounting range may require the hood to be installed lower.
Is 48 Inches the Standard Hood Height?
Not exactly.
Forty-eight inches is commonly seen as an upper limit for certain canopy-style commercial hood arrangements, but the actual approved installation height depends on the hood.
For example, some listed commercial canopy hoods may specify mounting ranges such as approximately:
33 to 48 inches above the cooking surface.
Other hood designs can have different ranges.
Always use the specifications for the exact hood being installed.
Why Can't You Just Hang the Hood as High as You Want?
The farther the hood is from the cooking equipment, the farther smoke, heat, and grease have to travel before entering the hood.
As the cooking plume rises, it can spread outward.
If the hood is too high, some of those emissions may escape around the hood instead of being captured.
This can result in:
- Smoke escaping into the kitchen
- Grease collecting around the room
- Excess heat in the kitchen
- Poor odor control
- Reduced hood performance
Can a Commercial Hood Be Too Low?
Yes.
Installing a hood lower than its approved mounting height can also create problems.
A hood that is too low may:
- Interfere with cooking
- Limit access to equipment
- Make large pots difficult to use
- Place components too close to heat
- Fall outside the hood's listed installation range
The goal is not simply to get the hood as close to the equipment as possible.
The goal is to install it at the height for which the system was designed.
Why Hood Manufacturer Instructions Matter
Commercial hoods are designed and tested for specific operating conditions.
The hood documentation may specify information such as:
- Minimum mounting height
- Maximum mounting height
- Minimum exhaust airflow
- Required front overhang
- Required side overhang
- Maximum cooking surface temperature
That is why restaurants should not design the cook line using a generic height found online and assume it applies to every hood.
What Is Hood Overhang?
Vertical height is only part of proper hood placement.
The hood also needs to extend far enough beyond the cooking equipment to capture the rising cooking plume.
This extension is called:
hood overhang.
How Far Should a Commercial Hood Extend Past the Equipment?
For many canopy-style commercial hoods, model mechanical codes call for the inside lower edge of the hood to extend at least:
6 inches beyond the edge of the cooking equipment on open sides.
This helps the hood capture smoke and grease that move outward as they rise.
There are exceptions and different configurations, particularly where equipment is directly against an appropriate wall or enclosure.
The hood's listed specifications should always be checked.
Why Is Hood Overhang Important?
Imagine a 36-inch-wide piece of cooking equipment with a hood that is also exactly 36 inches wide.
Cooking smoke does not necessarily rise in a perfectly straight vertical column.
The plume can spread outward.
Without adequate hood overhang, part of that plume may escape around the sides.
Hood Height and Overhang Work Together
These two measurements should not be considered separately.
As a hood is positioned farther above the equipment, the cooking plume has more space to spread.
That makes proper hood sizing and capture even more important.
Example of Hood Overhang
Imagine a restaurant cook line that is approximately 8 feet long.
The hood should not simply be selected because it is also approximately 8 feet long.
The hood designer needs to consider:
- Where each appliance begins and ends
- Which sides are open
- Required overhang
- Equipment depth
- Cooking duty
The final hood may therefore be longer or deeper than the equipment lineup beneath it.
What About Wall Canopy Hoods?
A wall canopy hood is installed along a wall with cooking equipment underneath it.
This is one of the most common commercial restaurant hood configurations.
The wall helps contain part of the cooking plume, while the hood extends over the equipment from above.
Wall canopy systems are commonly used over:
- Ranges
- Fryers
- Griddles
- Charbroilers
- Wok ranges
- Tandoors
What About Island Hoods?
An island hood is positioned over cooking equipment that is not directly against a wall.
Because the cooking plume can escape from more directions, island hood design can require different considerations.
The exact mounting height and overhang should come from the hood design and listing.
What Is a Low-Proximity Hood?
A low-proximity hood, sometimes called a backshelf hood, is designed to sit closer to the cooking equipment than a traditional overhead canopy.
Because it is closer to the source of heat and cooking emissions, its geometry is different from a standard canopy hood.
It should not be installed using the same assumptions as a typical overhead hood.
How Close Can a Low-Proximity Hood Be?
The allowed distance depends on the specific listed hood.
Some low-proximity commercial hood designs can be installed significantly closer to the cooking surface than a conventional canopy hood.
This is one reason the exact hood model matters so much.
Does Equipment Type Change Hood Height?
Yes.
A hood serving relatively light cooking equipment may have different operating requirements from one serving:
- Charbroilers
- Wok ranges
- Fryers
- Tandoors
Different appliances create different levels of:
- Heat
- Grease
- Smoke
- Cooking plume velocity
Does a Commercial Fryer Affect Hood Placement?
Commercial fryers are grease-producing appliances commonly located under Type I ventilation.
When planning a fryer station, the hood must properly capture the heat and grease generated during operation.
Nishi Enterprise carries Commercial Deep Fryers for restaurant kitchens.
The exact fryer model should be included in the hood equipment schedule before the ventilation system is finalized.
Does a Charbroiler Affect Hood Design?
Yes.
Charbroilers can produce substantial:
- Heat
- Smoke
- Grease
especially when cooking fatty proteins.
A charbroiler should be included in the hood design from the beginning rather than added after the ventilation system has already been sized.
Does a Commercial Range Affect Hood Placement?
Commercial ranges may be used for:
- Sautéing
- Pan frying
- Braising
- Boiling
- Sauce preparation
The equipment width, depth, burner configuration, and cooking application all matter.
Nishi Enterprise carries Commercial Ranges in multiple configurations.
What About Stock Pot Ranges?
Stock pot ranges often support tall cooking vessels.
This makes vertical working space especially important.
The hood needs to maintain proper capture while leaving enough room for employees to:
- Place large pots on the burner
- Remove lids
- Stir food
- Add ingredients
Nishi Enterprise carries Commercial Stock Pot Ranges.
Why Large Stock Pots Matter When Planning Hood Height
A hood can technically fit above a burner but still create an awkward workspace if there is not enough room for the pots used by the restaurant.
Before finalizing hood height, consider the complete operating setup, including cookware.
What About Wok Ranges?
Wok ranges can produce intense heat and a rapidly rising cooking plume.
Commercial wok equipment should be included in the ventilation design rather than treated like a generic range.
Nishi Enterprise carries Commercial Wok Ranges.
How Much Space Should Be Above a Tandoor?
A commercial tandoor is different from a flat range or fryer because the cooking chamber extends vertically and food is accessed from the opening at the top.
This means adequate working space above the tandoor is especially important.
The cook needs enough room to:
- Insert skewers
- Remove skewers
- Place naan on the clay wall
- Remove bread
- Access the tandoor opening safely
The hood also needs to be installed according to the tandoor and hood manufacturer's requirements.
Nishi Enterprise carries Commercial Tandoors for restaurant and catering kitchens.
Why You Should Not Guess Tandoor Hood Clearance
Tandoors can differ substantially from standard restaurant cooking equipment in:
- Height
- Opening position
- Heat output
- Cooking method
A hood layout that works well over a fryer may not automatically create the right working space over a tandoor.
What Is the Distance Between a Grease Filter and Cooking Equipment?
This is another measurement that is separate from overall hood height.
Type I hood grease filters are positioned above cooking equipment to remove grease from the exhaust stream.
The required minimum distance can vary depending on the cooking equipment.
Equipment involving exposed flames or charbroiling may require greater separation from grease filters than equipment without an exposed flame.
This is one reason measuring only from the bottom edge of the hood is not enough to design the entire system.
Hood Height vs. Grease Filter Height
These are two separate measurements:
Hood Height
Distance from the cooking surface to the lower edge of the hood.
Filter Height
Distance from the cooking or heating surface to the lowest edge of the grease filter.
A hood can meet one requirement while still needing adjustment to meet another.
How High Is a Commercial Hood From the Floor?
Restaurant owners sometimes measure the hood from the finished floor instead of from the cooking surface.
Some commercial canopy hood manufacturers commonly place the lower front edge around:
6 feet 6 inches to 7 feet above the finished floor.
However, this is only a general planning range.
The actual height still needs to satisfy the hood's permitted distance above the cooking surface.
Why Measuring From the Floor Can Be Misleading
Not every piece of restaurant equipment has the same working height.
Compare:
- Range
- Countertop griddle on an equipment stand
- Stock pot range
- Tandoor
Their cooking surfaces may all sit at different heights above the floor.
That is why the distance from the actual cooking surface is so important.
Should All Equipment Under One Hood Be the Same Height?
No.
A restaurant cook line may contain equipment with several different heights.
For example:
- Range
- Fryer
- Griddle
- Charbroiler
may not have identical cooking-surface heights.
The hood still needs to be designed to properly capture the emissions from the complete equipment lineup.
Can Countertop Equipment Go Under a Hood?
Yes.
Countertop cooking equipment can be installed underneath a commercial hood when appropriate.
It may sit on:
- Equipment stand
- Chef base
- Approved work surface
However, raising countertop equipment on a stand changes the cooking-surface height.
That should be accounted for when checking hood clearance.
Why Equipment Stands Matter
Suppose a countertop griddle is originally planned on a 24-inch-high stand.
If the restaurant later changes to a taller stand, the cooking surface moves closer to the hood.
This can affect:
- Working clearance
- Hood mounting relationship
- Fire suppression positioning
Final equipment heights should therefore be determined before the hood installation is completed.
Can You Raise Restaurant Equipment After the Hood Is Installed?
Possibly, but changing the equipment height can change the relationship between the appliance and the hood.
This could happen when:
- Legs are replaced with taller casters
- A countertop appliance gets a new stand
- Equipment is replaced with a taller model
Significant changes should be reviewed before modifying the cook line.
Casters Can Change Equipment Height
Restaurant equipment may be supplied with either:
- Legs
- Casters
Changing between them can alter the overall equipment height.
That is another reason hood clearance should be checked using the final equipment configuration.
Can You Put Tall Equipment Under an Existing Hood?
Possibly.
But first compare the new equipment's:
- Overall height
- Cooking surface height
- Depth
- Width
with the existing hood specifications.
Simply fitting physically underneath the hood does not mean the appliance is properly covered.
Why Hood Depth Matters
Restaurants often focus on hood length but forget about depth.
Cooking equipment can vary substantially in depth.
If a new appliance extends much farther into the kitchen than the previous equipment, the hood may not provide the required front overhang.
Why You Should Measure Equipment Depth
Imagine replacing a 30-inch-deep appliance with one that is significantly deeper.
The new unit might physically fit against the wall but extend farther beyond the front of the hood.
This can affect capture.
Always check both width and depth.
Can Equipment Stick Out Past the Hood?
A canopy hood generally needs to extend beyond the cooking surface on open sides rather than allowing the active cooking surface to extend outside the hood capture area.
If equipment sticks significantly beyond the hood, the installation should be reviewed.
What If the Equipment Is Against a Wall?
A wall can change how hood overhang is measured on that side.
Model mechanical codes provide exceptions where a hood can align with the appliance edge if that side is appropriately enclosed by a noncombustible wall or panel.
This is another reason a wall canopy and island canopy are not designed exactly the same way.
Can You Add Another Piece of Equipment at the End of the Hood?
Possibly, but only if the new appliance remains properly covered by the hood.
Do not look only for unused floor space.
You also need to consider:
- Hood overhang
- Equipment cooking duty
- Exhaust capacity
- Fire suppression
- Gas or electrical utilities
Can You Move a Fryer to the Edge of the Hood?
Moving equipment within an existing hood can affect whether the required overhang remains available.
It can also affect the fire-suppression system.
Equipment should not be casually rearranged simply because everything still appears to fit under the stainless steel canopy.
Why Fire Suppression Matters When Moving Equipment
Type I hood systems typically incorporate a fire-suppression system for the cooking appliances being protected.
The system is designed around the cook line.
Moving or replacing appliances can change the relationship between:
- Cooking surfaces
- Fire-suppression nozzles
- Hood coverage
What If You Replace a Range With a Fryer?
Even if both appliances physically fit into the same space, they do not necessarily create the same:
- Heat load
- Grease load
- Cooking duty
- Fire-suppression requirements
The cook line should be reviewed when major equipment changes are made.
Should Hood Height Be Decided Before Buying Equipment?
The hood and equipment should ideally be planned together.
Restaurant owners should know the actual:
- Manufacturer
- Model number
- Width
- Depth
- Height
- Cooking surface height
of the major cooking equipment before the hood layout is finalized.
Why Spec Sheets Are Important
A restaurant equipment specification sheet gives the hood designer accurate dimensions.
It is much better to say:
"This is the exact 36-inch fryer battery, range, and charbroiler we are installing."
than:
"We will probably put some cooking equipment here."
The more accurately the cook line is defined, the easier it is to design the ventilation system correctly.
Planning a New Restaurant Cook Line
A simple planning process is:
- Finalize the menu.
- Choose the cooking methods.
- Select the major cooking equipment.
- Collect the specification sheets.
- Lay out the cook line.
- Design the hood around the equipment.
- Coordinate fire suppression and utilities.
Planning Equipment Under an Existing Hood
If you are taking over an existing restaurant, begin by documenting the hood.
Then determine:
- Hood width
- Hood depth
- Hood mounting height
- Available equipment area
- Existing fire-suppression coverage
- Previous appliance lineup
Then compare that information with the new equipment package.
Do Not Assume Existing Hood Space Is Usable Cooking Space
A 10-foot hood does not necessarily mean you can install exactly 10 feet of cooking equipment underneath it.
The hood may need to extend beyond the cooking surfaces.
This is especially important at the open ends of the cook line.
Example: Planning Equipment Under a 10-Foot Hood
Suppose you have a 10-foot canopy hood.
You want to install:
- 36-inch range
- 36-inch griddle
- Two 24-inch fryers
Those appliances already total:
120 inches, or 10 feet.
That does not automatically mean they fit appropriately beneath a 10-foot hood because the hood may also require overhang beyond the equipment at the open ends.
This is why cook-line dimensions should be checked before purchasing the equipment.
Should Equipment Be Centered Under the Hood?
Generally, equipment should be positioned within the designed capture area of the hood.
Whether every appliance is literally centered depends on the cook-line arrangement.
The important issue is maintaining the required hood coverage and approved equipment layout.
What About Type II Hoods?
Type II hoods are generally associated with heat, steam, moisture, and condensation rather than grease-producing cooking.
Their mounting requirements can also depend on:
- Hood type
- Equipment
- Manufacturer specifications
The same rule applies: do not use a generic measurement when a listed hood has specific installation requirements.
Can the Ceiling Determine Hood Height?
Ceiling height affects the overall hood installation, but the cooking equipment and hood listing still need to work together.
A low ceiling may require a different hood configuration than a kitchen with a very high ceiling.
This should be addressed during kitchen design rather than after the hood has been ordered.
What If the Ceiling Is Very High?
A commercial hood should not simply be moved upward toward a high ceiling.
The hood still needs to remain within its permitted mounting distance from the cooking surface.
Enclosure panels or wrappers can fill the space between the hood and the ceiling where appropriate.
Does Hood Height Affect Kitchen Comfort?
It can.
A properly designed system helps capture heat before it spreads throughout the kitchen.
Poor capture can contribute to a hotter and less comfortable working environment.
However, hood performance also depends on:
- Exhaust airflow
- Make-up air
- Equipment duty
- Hood dimensions
Height is only one part of the complete system.
Does a Lower Hood Always Capture Better?
Not necessarily.
Although proximity can help capture, commercial hoods are tested and designed for particular installation ranges.
Installing the hood outside that range can create other problems.
Follow the hood manufacturer's listed mounting instructions.
Does a Bigger Hood Solve Everything?
No.
A larger hood can provide additional coverage, but proper ventilation also depends on:
- Exhaust airflow
- Cooking duty
- Make-up air
- Hood type
- Equipment arrangement
What Should Restaurant Owners Measure?
Before ordering equipment for an existing hood, measure:
- Hood length
- Hood depth
- Height of hood above finished floor
- Height from cooking surface to hood
- Available space between existing appliances
Also collect the hood nameplate and manufacturer information if available.
What Should You Measure on the Cooking Equipment?
For every appliance, record:
- Width
- Depth
- Overall height
- Cooking-surface height
- Leg or caster height
These measurements help determine whether the appliance can properly fit within the hood's capture area.
Restaurant Hood Planning Checklist
Before finalizing the cook line, confirm:
- Exact hood model
- Approved mounting height
- Cooking-surface height
- Required hood overhang
- Equipment width
- Equipment depth
- Cooking duty
- Fire-suppression coverage
- Gas and electrical utilities
- Manufacturer requirements
- Local approval requirements
Frequently Asked Questions
How much space should be between restaurant equipment and the hood?
There is no universal distance for every hood. For many canopy-style commercial hood installations, model mechanical codes limit the distance between the cooking surface and front lower edge of the hood to no more than 4 feet. The exact hood manufacturer's listed mounting range must also be followed.
Is 48 inches too high for a commercial hood?
Some commercial canopy hood designs permit a maximum mounting height of approximately 48 inches above the cooking surface, but this is not universal. Check the exact hood listing.
Is 36 inches a normal commercial hood height?
It can fall within the approved range for some commercial canopy hoods, but there is no universal 36-inch rule.
How far should a restaurant hood extend past cooking equipment?
For many canopy-style commercial hoods, model mechanical codes call for at least 6 inches of horizontal overhang beyond the cooking surface on open sides. The exact hood design and applicable requirements should be verified.
Can equipment stick out beyond the hood?
The active cooking area should remain within the hood's required capture area. Equipment extending too far beyond the hood can reduce capture performance.
Can I put exactly 10 feet of equipment under a 10-foot hood?
Not necessarily. The hood may need additional overhang beyond the cooking equipment, particularly at open ends.
Can a commercial hood be too high?
Yes. A hood mounted above its approved height may not properly capture the cooking plume.
Can a commercial hood be too low?
Yes. Installing it below its listed mounting height can interfere with equipment operation and may not comply with the hood's installation requirements.
Are all restaurant hoods mounted at the same height?
No. Canopy, island, backshelf, and low-proximity hoods can have different installation requirements.
Does a fryer require a different hood height than a range?
The complete cooking lineup and hood listing determine the installation. Different appliances can have different cooking-duty and filter-clearance considerations.
How much space should be above a tandoor?
The hood and tandoor manufacturer requirements should be followed. Enough working space also needs to remain for inserting and removing skewers and working through the top opening.
Does changing from legs to casters affect hood clearance?
It can. Casters and legs can have different heights, which changes the height of the cooking surface relative to the hood.
Can I put a countertop appliance on a stand under the hood?
Yes, when the complete installation is approved, but the height of the stand changes the distance between the cooking surface and hood.
Can I move restaurant equipment around underneath an existing hood?
Significant equipment changes should be reviewed because repositioning can affect hood overhang, capture, utilities, and fire-suppression coverage.
Can I add another fryer if there is empty space underneath my hood?
Not automatically. Available floor space does not guarantee that the hood, exhaust system, fire suppression, and utilities can support another fryer.
Should I measure the hood from the floor or the cooking surface?
The cooking-surface-to-hood measurement is especially important because equipment can have different working heights. Finished-floor height is also useful for overall layout planning.
Does the hood manufacturer determine the mounting height?
The hood's listing and manufacturer instructions provide the approved mounting parameters, which also need to satisfy applicable local requirements.
Should I choose cooking equipment before designing the hood?
Ideally, the major cooking equipment should be selected or clearly defined before the hood is finalized so the ventilation system can be designed around the actual cook line.
Final Thoughts: How Much Space Should Be Between Cooking Equipment and a Hood?
There is no single distance that works for every restaurant hood.
For many canopy-style commercial kitchen hoods, a useful starting point is understanding that:
- The cooking surface must remain within the hood's approved vertical mounting range.
- Model mechanical codes commonly limit canopy hood height to no more than 4 feet above the cooking surface.
- Many listed commercial canopy hoods use more specific mounting ranges.
- The hood generally needs to extend beyond the cooking surface on open sides.
- Grease filter clearance is a separate measurement.
Most importantly, do not determine the hood location from one generic measurement.
The hood should be planned around the exact:
- Range
- Fryer
- Griddle
- Charbroiler
- Stock pot range
- Wok range
- Tandoor
- Other cooking equipment
Nishi Enterprise carries Commercial Cooking Equipment, including Commercial Ranges, Commercial Fryers, Stock Pot Ranges, Wok Ranges, and Commercial Tandoors.
Restaurants planning a new kitchen or remodeling an existing cook line can also learn more about Nishi Enterprise's Restaurant Design Consultation.
The best rule is to choose the cooking equipment first, use its exact dimensions to plan the cook line, and then follow the listed hood mounting height and overhang requirements for that specific installation.
