What Size Grease Trap Do I Need?

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Sizing-a-grease-trap-for-commercial-kitchen

Grease traps, also known as grease interceptors, are plumbing devices designed to capture fats, oils, and grease (FOG) from wastewater before it enters the sewer system. They consist of a tank or container that allows FOG to separate from water, preventing it from causing blockages and environmental pollution.

When it comes to managing grease in commercial kitchens, selecting the right size grease trap is crucial. An appropriately sized grease trap ensures efficient grease removal, prevents clogs in plumbing systems, and helps maintain compliance with regulations. However, determining the correct size can be challenging.

Explore the considerations involved in sizing a grease trap, along with effective solutions for ensuring that your commercial kitchen remains free from grease buildup!

1. Kitchen Size and Layout

The size of your kitchen and the volume of wastewater generated determine the capacity needed for the grease trap. Larger kitchens with higher water usage will require larger grease traps to accommodate the flow.

2. Type of Cooking Equipment

Different types of cooking equipment produce varying amounts of grease. Consider the types of equipment in your kitchen, such as wok cookers, griddles, and rotisserie/combi ovens, as they contribute to grease production.

3.Peak Usage Times

Assess the busiest times in your kitchen to determine the maximum flow rate of wastewater. Grease traps/grease interceptors should be able to handle peak flow rates without overflowing or causing backups.

4. Local Regulations

Check local plumbing and environmental regulations to ensure compliance with grease trap sizing requirements. Regulations may specify minimum trap sizes based on factors like kitchen size and wastewater flow.

Our user-friendly online sizing calculator offers the simplest method for identifying the suitable size grease trap for your commercial kitchen. By specifying the number of sink fixtures, ovens, or wok cookers, our calculator will promptly recommend the appropriate Grease Guardian model, complete with the necessary flow rate and capacity.


Alternatively, you have the option to download our comprehensive Sizing Guide, which offers four distinct methods for sizing your grease trap to fit your kitchen perfectly. These methods include General Flow Rates of Common Kitchen Equipment, Calculating Sizing by Fixture, a Sizing Quick Guide, or by Meals Per Day.

Choosing the right size grease trap is essential for effective grease management in commercial kitchens. By considering factors such as kitchen size, equipment type, peak usage times, and local regulations, you can select a grease trap that meets your needs and ensures compliance. Remember to use a sizing calculator and seek professional advice when necessary. With the right grease trap in place, you can prevent costly plumbing issues, maintain a clean and efficient kitchen, and protect the environment from grease pollution.

Get in Touch


Do you have multiple fixtures in your commercial kitchen and find yourself unsure about how to size your grease trap? Reach out to us directly for expert assistance.

Call us on 800 677 7861 or email us at info@greaseguardian.com

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