Type I vs. Type II Commercial Kitchen Hoods: What's the Difference?

Choosing the right ventilation system is an important step when designing or upgrading a commercial kitchen. Understanding the differences between Type I vs. Type II commercial kitchen hoods helps restaurant owners create a safer, more efficient workspace while supporting the unique requirements of their cooking equipment.

Installing the wrong hood can lead to poor ventilation, uncomfortable working conditions, and costly modifications if the system doesn't match the kitchen's operations.

Although Type I and Type II hoods may look similar, they serve very different purposes. Type I hoods are designed to capture grease-laden vapors produced during cooking, while Type II hoods manage heat, steam, condensation, and odors from appliances that do not generate grease. Knowing which hood is appropriate for your equipment is essential when planning a commercial kitchen layout.

This blog explains the differences between Type I vs. Type II commercial kitchen hoods, the appliances each hood is designed to support, and the factors to consider when selecting the right ventilation solution for your restaurant. 

Importance of Commercial Kitchen Hoods

Commercial kitchen hoods do much more than remove smoke from the cooking area. They are a critical part of the kitchen ventilation system, helping create a cleaner, safer, and more comfortable environment for staff while supporting efficient day-to-day operations. 

A properly selected hood system helps:

• Remove excess heat generated by commercial equipment.

• Capture steam and condensation that can affect visibility and comfort.

• Improve indoor air quality by exhausting smoke, vapors, and cooking odors.

• Reduce grease accumulation on surrounding walls, ceilings, and equipment where applicable.

• Create a more comfortable working environment during busy service periods.

• Support the performance of HVAC systems by controlling temperature and airflow.

Without adequate ventilation, kitchens can quickly become hot and humid, making it more difficult for staff to work efficiently. Excess heat and moisture may also affect nearby equipment, increase cleaning requirements, and contribute to an uncomfortable dining experience if cooking odors spread beyond the kitchen.

The type of cooking equipment installed determines the hood required. Appliances that produce grease require a different ventilation approach than equipment that primarily releases steam or heat. Understanding this distinction is the foundation for selecting the right commercial hood system.

What Is a Type I Commercial Kitchen Hood?

 

As grease, smoke, and heat rise from cooking equipment, the hood captures these contaminants before they can spread throughout the kitchen.

Type I hoods are typically equipped with grease filters that collect grease particles while allowing air to flow through the ventilation system. Because grease is combustible, these hood systems are commonly installed alongside fire suppression systems to help improve kitchen safety.

Type I hoods are commonly installed above equipment such as:

• Deep fryers

• Charbroilers

• Flat-top griddles

• Woks

• Gas ranges

• Broilers

• Tilt skillets

• Other grease-producing cooking appliances

These cooking appliances generate smoke, grease vapors, and high levels of heat that require specialized ventilation. Installing a hood designed to capture grease helps reduce accumulation within the exhaust system and supports safer kitchen operations.

Restaurants serving grilled foods, fried menu items, burgers, steaks, barbecue, or similar dishes will often require Type I hoods because of the amount of grease released during cooking.

While Type I hoods are the preferred choice for grease-producing appliances, not every piece of commercial kitchen equipment generates grease. Many appliances primarily release heat, moisture, or steam, requiring a different type of ventilation system.

What Is a Type II Commercial Kitchen Hood?

 

Instead of capturing grease, these hoods help remove excess moisture and heat, improving air circulation and maintaining a more comfortable working environment.

Because they are not intended to handle grease, Type II hoods are generally installed above equipment such as:

• Commercial dishwashers

• Steamers

• Pasta cookers

• Steam kettles

• Certain ovens that do not produce grease-laden vapors

• Beverage equipment

• Food warming equipment

By exhausting hot, humid air, Type II hoods help reduce condensation that could otherwise collect on walls, ceilings, and surrounding equipment. They also improve visibility, reduce excess heat in the kitchen, and create a more comfortable workspace for staff during busy service periods.

Although Type II hoods play an important role in commercial kitchen ventilation, they should never be used over equipment that produces grease. Appliances such as fryers, charbroilers, and griddles require a Type I hood because grease particles demand specialized filtration and fire protection.

Once you've determined that your equipment requires a Type II hood, the next decision is selecting the appropriate hood length.

Choosing the Right Hood Length for Smaller Kitchens

The hood should extend beyond the cooking or foodservice equipment it covers, providing effective ventilation across the entire work area. Smaller kitchens with a limited number of appliances often benefit from compact hood systems that maximize ventilation without occupying unnecessary space.

The EconAir EX-2 4ft is well suited to compact workstations or single pieces of non-grease-producing equipment where ventilation requirements are minimal.

For slightly larger installations, the EconAir EX-2 5ft provides additional coverage while maintaining a compact footprint, making it suitable for small cafes, bakeries, or prep areas.

Restaurants with a longer equipment line may find the EconAir EX-2 6ft a practical option for covering steamers, warming equipment, or commercial dishwashing stations.

The EconAir EX-2 7ft offers even greater coverage for kitchens that require ventilation across multiple adjacent appliances while still operating within a relatively compact workspace.

Selecting the correct hood length allows the ventilation system to perform efficiently while making the best use of available kitchen space.

Medium-Length Hood Options

As restaurant operations expand, ventilation requirements often increase as well. Medium-sized kitchens typically have longer equipment lines that generate more heat and steam, making wider hood coverage essential.

The EconAir EX-2 8ft provides additional coverage for kitchens operating several non-grease-producing appliances side by side.

The EconAir EX-2 9ft is suitable for restaurants with larger preparation areas or expanded dishwashing and food holding stations.

For kitchens requiring even broader ventilation coverage, the EconAir EX-2 10ft accommodates longer equipment layouts while helping remove heat and moisture efficiently.

The EconAir EX-2 11ft is another option for medium-sized commercial kitchens where several pieces of steam-producing equipment operate simultaneously during service.

Choosing a hood that matches the length of the equipment line helps improve airflow across the entire workspace rather than concentrating ventilation in only one area.

Large Commercial Kitchen Applications

Hotels, institutional kitchens, commissaries, and large restaurant operations often require ventilation systems capable of covering extended equipment lines.

The EconAir EX-2 12ft is appropriate for larger commercial kitchens with multiple steam-producing appliances positioned together.

The EconAir EX-2 13ft provides additional coverage for high-capacity foodservice operations where longer ventilation spans are needed.

For facilities with expansive production areas, the EconAir EX-2 14ft offers increased hood coverage across larger equipment layouts.

The EconAir EX-2 15ft is well suited to banquet kitchens, hospitality venues, and institutional foodservice environments where multiple workstations operate at the same time.

For the largest commercial kitchens, the EconAir EX-2 16ft delivers the widest coverage in the series, making it suitable for extensive ventilation requirements across long rows of non-grease-producing equipment.

While hood length is an important consideration, it's only one part of choosing the right ventilation system. Equally important is understanding which appliances require a Type I hood and which are better suited to a Type II hood. Comparing the two side by side makes it much easier to select the right solution for your commercial kitchen.

Type I vs. Type II Commercial Kitchen Hoods

Although both systems improve ventilation, Type I vs. Type II commercial kitchen hoods are designed for different applications. The primary distinction lies in the type of contaminants they are built to capture.

A Type I hood is intended for cooking equipment that produces grease-laden vapors, smoke, and grease particles. These hoods incorporate grease filters and are commonly paired with fire suppression systems because of the increased fire risk associated with grease-producing appliances.

A Type II hood, on the other hand, is designed for equipment that generates heat, steam, condensation, and odors without producing grease. Its purpose is to improve airflow, remove excess moisture, and create a more comfortable kitchen environment.

The following comparison highlights the key differences.

Understanding these differences helps ensure the ventilation system matches the equipment installed in your kitchen while supporting safe and efficient day-to-day operations.

Which Appliances Need Each Hood?

One of the simplest ways to determine the appropriate hood is by identifying whether your equipment produces grease during normal operation.

Appliances That Typically Require a Type I Hood

Because these appliances release grease-laden vapors, they generally require a Type I hood:

• Deep fryers

• Flat-top griddles

• Charbroilers

• Gas ranges

• Woks

• Broilers

• Tilt skillets

• Salamanders

These appliances generate smoke, grease, and high temperatures that require specialized filtration to help maintain kitchen safety and cleanliness.

Appliances That Typically Use a Type II Hood

Equipment that primarily produces heat, steam, or moisture without grease is generally paired with a Type II hood.

Examples include:

• Commercial dishwashers

• Steamers

• Steam kettles

• Pasta cookers

• Holding cabinets

• Certain baking ovens that do not generate grease-laden vapors

• Beverage preparation equipment

These appliances benefit from ventilation that removes heat and humidity while improving working conditions for kitchen staff.

Because every kitchen is different, restaurants operating both grease-producing and non-grease-producing equipment may require more than one ventilation solution depending on their layout and equipment configuration.

How to Choose the Right Hood Size

Selecting the correct hood type in Los Angeles is only the first step. The hood should also be appropriately sized to provide effective ventilation across the equipment it serves.

When determining the right hood size, consider the following factors.

Equipment Width

The hood should extend beyond the edges of the cooking or preparation equipment to help capture rising heat, steam, or grease effectively. A hood that is too short may allow contaminants to escape into the surrounding kitchen.

Kitchen Layout

The arrangement of your equipment influences the hood length you need. A single dishwasher requires far less coverage than a continuous line of steamers, warming equipment, and pasta cookers.

Planning your kitchen layout before purchasing a hood can help ensure proper ventilation across the entire work area.

Airflow Requirements

Different appliances generate different amounts of heat and moisture. As equipment output increases, ventilation requirements often increase as well. Selecting the appropriate hood size helps maintain consistent airflow throughout service.

Future Expansion

Many restaurants add equipment as their operations grow. Choosing a hood that accommodates future changes may reduce the need for major ventilation upgrades later.

If additional steam-producing appliances are likely to be installed, allowing extra coverage during the initial purchase can be a practical long-term decision.

Local Building and Fire Codes

Ventilation systems should always comply with applicable local building, mechanical, and fire regulations. Requirements may vary depending on the type of equipment, hood system, and jurisdiction, so it's important to verify code requirements before installation.

Choosing the right hood involves more than matching a product to your equipment. Avoiding common planning and installation mistakes can improve ventilation performance and help your investment deliver reliable long-term value. In the final section, we'll look at some of the most common mistakes restaurants make when selecting commercial kitchen hoods and the questions to ask before making a purchase.

Common Mistakes When Choosing a Commercial Kitchen Hood

Selecting the right ventilation system in Los Angeles involves more than comparing product specifications. Even a high-quality hood may not perform as expected if it isn't matched to the kitchen's equipment and layout. Avoiding these common mistakes can help improve ventilation performance and reduce costly changes after installation.

Choosing the Wrong Hood Type

One of the most common mistakes is assuming that all commercial kitchen hoods serve the same purpose. Installing a Type II hood above equipment that produces grease-laden vapors can lead to inadequate ventilation and may not meet applicable code requirements.

Before purchasing a hood in Los Angeles, identify every appliance it will cover and determine whether those appliances produce grease, heat, steam, or a combination of these.

Buying the Wrong Hood Size

A hood that is too small may not provide adequate coverage across the equipment line, allowing heat, steam, or grease to escape into the kitchen. Conversely, choosing a significantly larger hood than necessary can increase installation costs and occupy valuable ceiling space.

Measuring the full equipment layout before selecting a hood helps ensure appropriate coverage.

Overlooking Future Kitchen Expansion

Restaurant operations often evolve over time. New menu items, additional equipment, or increased customer demand may require changes to the kitchen layout.

Planning for future growth when selecting a ventilation system can reduce the need for major upgrades later.

Ignoring Maintenance Access

Routine cleaning and maintenance are essential for maintaining ventilation performance. Installing a hood without sufficient clearance for inspections or servicing can make maintenance more difficult and increase downtime.

Treating Ventilation as a Standalone Purchase

A commercial kitchen hood works as part of a larger ventilation system. Airflow, ductwork, makeup air, and equipment placement all contribute to overall performance. Considering the entire kitchen environment rather than focusing only on the hood can help create a more effective ventilation solution.

Questions to Ask Before Buying a Commercial Kitchen Hood

Taking the time to answer a few practical questions can make equipment selection much easier.

Ask yourself:

• What appliances will the hood cover?

• Do those appliances produce grease-laden vapors or only heat and steam?

• How much ventilation coverage does the equipment line require?

• Is there adequate space for installation and maintenance?

• Will additional equipment be added in the future?

• Does the ventilation system comply with local building and fire regulations?

Answering these questions before making a purchase helps narrow your options and supports a ventilation system that aligns with your restaurant's operational requirements.

Find the Right Commercial Kitchen Hood at American Chef Supply

Choosing the right commercial kitchen hood starts with understanding your equipment, ventilation requirements, and kitchen layout. A well-matched hood system can improve airflow, support a more comfortable working environment, and help your kitchen operate efficiently every day.

American Chef Supply offers a wide selection of commercial kitchen ventilation solutions, including the EconAir EX-2 Type II Commercial Kitchen Hood series in multiple sizes to suit everything from compact prep areas to large commercial kitchens. If you're planning a new kitchen or upgrading your current ventilation system, our team can help you identify the hood that best fits your equipment and operational needs.

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Frequently Asked Questions

1. What is the difference between a Type I and Type II commercial kitchen hood?

A Type I hood is designed to capture grease-laden vapors, smoke, and heat from cooking equipment such as fryers and griddles. A Type II hood removes heat, steam, condensation, and odors from appliances that do not produce grease, such as dishwashers and steamers.

2. When do I need a Type I commercial kitchen hood?

You typically need a Type I hood when using grease-producing equipment, including deep fryers, charbroilers, gas ranges, griddles, broilers, and woks. These appliances generate grease-laden vapors that require specialized filtration and ventilation.

3. What appliances require a Type II commercial kitchen hood?

Type II hoods are commonly used above commercial dishwashers, steamers, steam kettles, pasta cookers, food warming equipment, and certain ovens that produce heat and steam but not grease-laden vapors.

4. Can a Type II hood be installed over a fryer or grill?

No. Type II hoods are not designed to handle grease-laden vapors. Fryers, grills, charbroilers, and similar cooking equipment generally require a Type I hood to provide appropriate grease capture and ventilation.

5. How do I determine the right size commercial kitchen hood?

The hood should provide adequate coverage over the equipment it serves. Consider the width of your appliance line, the amount of heat or steam produced, your kitchen layout, and any future equipment additions when selecting the appropriate hood length.

6. Do Type II commercial kitchen hoods require grease filters?

No. Since Type II exhaust hoods are intended for non-grease-producing equipment, they do not typically include grease filters. Their primary function is to remove heat, steam, condensation, and odors.

7. Are fire suppression systems required for Type II hoods?

Requirements vary depending on local building codes and the equipment installed beneath the hood. Because regulations differ by jurisdiction, it's important to verify the applicable requirements before installation.

8. How often should commercial kitchen hoods be cleaned?

Cleaning frequency depends on the hood type, equipment use, and local regulations. Regular inspections and routine cleaning help maintain airflow, improve performance, and reduce the build-up of grease or other contaminants.

9. Can one commercial kitchen use both Type I and Type II hoods?

Yes. Many commercial kitchens use both hood types. A Type I hood may be installed over grease-producing cooking equipment, while a Type II hood ventilates areas with steam-producing appliances such as dishwashers or steamers.

10. What should I consider before buying a commercial kitchen hood?

Before purchasing a hood, evaluate the type of equipment it will cover, the required hood size, available kitchen space, ventilation needs, maintenance access, future expansion plans, and local building or fire code requirements. These factors will help you choose a system that suits your kitchen and operational needs.