Dealing with grease in a commercial kitchen is a constant battle. Without proper management, fats, oils, and grease can clog your plumbing, create foul odors, and lead to costly repairs. A reliable grease interceptor is not just a convenience—it’s a necessity for any food service operation.
This guide reviews ten of the best grease interceptors on the market, covering a range of capacities, materials, and price points. Whether you run a small café or a large restaurant, you’ll find the information you need to make an informed choice that keeps your kitchen running smoothly.
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John Boos GT-8 Carbon Steel Grease Interceptor, 14.2" Long by 11.2" Tall by…
Best forSmall kitchens and food trucks
- Durable carbon steel
- Compact size
ConsiderSmall capacity
BEAMNOVA Commercial Grease Trap, 25lbs, Stainless Steel, Side Inlet
Best forMedium to high-volume restaurants
- High-grade stainless steel
- Easy installation
ConsiderBulky for small spaces
Canplas 3920A02S Thermoplastic Grease Interceptor 20 Gallons per Minute, 40…
Best forHigh-flow kitchen operations
- High 20 GPM flow rate
- Lightweight thermoplastic
ConsiderNot for extreme heavy use
John Boos GT-100 Carbon Steel Grease Interceptor, 30.5" Long by 21.5" Tall …
Best forHigh-volume central kitchens
- Huge 100lb capacity
- Rugged steel build
ConsiderLarge footprint
BESEDER Grease Trap Plastic 4 GPM Commercial Under Sink Grease Trap, Grease…
Best forUnder-sink restaurant installations
- ASME certified
- Rust-proof plastic
ConsiderLower flow rate
BEAMNOVA Commercial Grease Trap, 8lbs, Stainless Steel, Side Inlet
Best forSmall prep areas and cafes
- Stainless steel build
- Compact and easy to install
ConsiderLimited capacity
John Boos GT-20 Carbon Steel Grease Interceptor, 20.1" Long by 12.1" Tall b…
Best forModerate kitchen demands
- Good capacity-to-size ratio
- Durable steel construction
ConsiderHeavier than plastic models
Canplas 3925A02LO Thermoplastic Grease Interceptor – Low Profile, 25 Gallon…
Best forTight spaces with high flow
- Low-profile design
- High 25 GPM flow
ConsiderMay require special fittings
BESEDER Grease Trap Plastic 10 GPM Commercial Under Sink Grease Trap, Greas…
Best forLarger under-sink needs
- Higher 10 GPM flow
- ASME certified
ConsiderPlastic may be less robust
Zurn GT2700 15 GPM 2" No-hub Connection Grease Interceptor
Best forReliable mid-range kitchen use
- Made in USA
- Corrosion-resistant steel
ConsiderNo-hub connection may limit options
John Boos GT-8 Carbon Steel Grease Interceptor – Compact Efficiency
The John Boos GT-8 is a workhorse for small kitchens. With an 8-pound grease capacity and dimensions of 14.2 by 11.2 by 10.5 inches, it fits neatly under most sinks. The TIG welded 11-gauge carbon steel construction with a corrosion-resistant coating ensures durability, while the non-skid cover with a locking device keeps everything secure.
This model includes a T-Vent pipe and accepts no-hub adapters for both steel and plastic pipes, making installation straightforward. Its compact size doesn’t compromise performance, making it ideal for food trucks, small cafes, or prep areas with limited space.
- Durable carbon steel
- Compact size
- Secure locking lid
- Small capacity
- Requires no-hub adapters
BEAMNOVA Commercial Grease Trap 25lbs – Heavy-Duty Stainless Steel
Brand: BEAMNOVA
A robust and efficient interceptor for demanding commercial use.
The BEAMNOVA 25lbs grease trap is built for medium to high-volume kitchens. Its upgraded version features a larger capacity and improved welding for a smoother port. Made from 1.2mm thick 201 stainless steel, it resists rust and corrosion, ensuring a long service life even with constant use.
Installation is a breeze—it arrives fully assembled, and you just connect your sink and dishwasher lines. The practical design includes locking devices on both sides to prevent leakage, and the dimensions (23.82 x 12 x 11.22 inches) allow for flexible placement. This trap handles flowing speeds efficiently, making it a reliable choice for busy restaurants.
- High-grade stainless steel
- Easy installation
- Large 25lb capacity
- Bulky for small spaces
- Price may be higher
Canplas 3920A02S Thermoplastic Grease Interceptor – 20 GPM, 40 lbs
The Canplas 3920A02S is a thermoplastic grease interceptor designed for high flow rates. With a 20 GPM rating and a 40-pound grease capacity, it can handle busy kitchen operations. Its actual grease capacity is even higher at 70 pounds, giving you extra buffer before maintenance.
The compact footprint (23.5 x 17.5 x 16.3 inches) fits under most sinks, and the 2-inch connection size simplifies hookup. Thermoplastic construction is lightweight yet durable, resistant to corrosion and chemicals. This unit is a practical choice for restaurants that need reliable grease removal without taking up too much space.
- High 20 GPM flow rate
- Lightweight thermoplastic
- Extra grease capacity
- Not for extreme heavy use
- Plastic may scratch
John Boos GT-100 Carbon Steel Grease Interceptor – Massive Capacity
Brand: John Boos
The ultimate solution for heavy grease loads in large operations.
For large-scale commercial kitchens, the John Boos GT-100 is a powerhouse. With a 100-pound grease capacity and dimensions of 30.5 x 21.5 x 22.25 inches, it’s built to handle the heaviest grease loads. The TIG welded 11-gauge carbon steel with corrosion-resistant coating ensures years of reliable service.
This interceptor includes a non-skid cover with a locking device and a removable baffle for easy cleaning. The T-Vent pipe and no-hub adapter compatibility simplify installation. If you run a high-volume restaurant or a central kitchen, this unit provides the capacity you need to avoid frequent pump-outs.
- Huge 100lb capacity
- Rugged steel build
- Easy maintenance
- Large footprint
- Heavy to install
BESEDER Grease Trap Plastic 4 GPM – ASME Certified Under Sink
The BESEDER 4 GPM grease trap is a top pick for under-sink installation. Its durable plastic construction with 1/4-inch thick walls won’t weld, leak, or rust, making it a low-maintenance option. The dimensions (15.75 x 13.2 x 10.63 inches) allow it to fit snugly under most sinks.
This ASME-certified trap effectively treats oily water from mineral, animal, and vegetable oils. The 2-inch thread connection simplifies hookup to your sink and dishwasher. Its multistage cleaning system ensures efficient grease separation, keeping your plumbing clear and odor-free.
- ASME certified
- Rust-proof plastic
- Compact dimensions
- Lower flow rate
- Plastic may be less durable
BEAMNOVA Commercial Grease Trap 8lbs – Compact Stainless Steel
Brand: BEAMNOVA
A dependable, space-saving interceptor for small-scale operations.
The BEAMNOVA 8lbs grease trap is perfect for small kitchens or prep areas. Its compact size (14.17 x 10.24 x 9.45 inches) fits easily under counters, and the stainless steel construction ensures durability. The upgraded version includes improved welding and all necessary accessories.
This trap works on the principle that fats, oils, and grease float while solids sink, efficiently separating them from wastewater. Locking devices on both sides prevent side leakage, and the faucet switch gives you control over flow. It’s an easy-to-install, practical solution for light to moderate use.
- Stainless steel build
- Compact and easy to install
- Leak-proof design
- Limited capacity
- Not for heavy use
John Boos GT-20 Carbon Steel Grease Interceptor – Balanced Performance
The John Boos GT-20 offers a balanced blend of capacity and footprint. With a 20-pound grease capacity and dimensions of 20.1 x 12.1 x 14.5 inches, it suits moderate kitchen demands. The TIG welded 11-gauge carbon steel with corrosion-resistant coating provides long-lasting durability.
Features include a non-skid cover with a locking device and a removable baffle for easy cleaning. The T-Vent pipe and no-hub adapter compatibility make installation flexible. This interceptor is an excellent middle-ground option for restaurants that need more capacity than a small trap but don’t have space for a large unit.
- Good capacity-to-size ratio
- Durable steel construction
- Easy to clean
- Heavier than plastic models
- Requires adapters
Canplas 3925A02LO Thermoplastic Grease Interceptor – Low Profile, 25 GPM
Brand: Canplas
A space-saving solution that doesn't compromise on performance.
The Canplas 3925A02LO is a low-profile grease interceptor designed for spaces with height constraints. With a 25 GPM rating and a 50-pound grease capacity, it handles substantial flow while fitting in tighter areas. Its thermoplastic construction is lightweight and resistant to corrosion.
This model is ideal for restaurants with limited under-sink clearance but high grease output. The low-profile design doesn’t sacrifice performance, and the 2-inch connection simplifies installation. If you need a powerful interceptor that fits where others won’t, this is a smart pick.
- Low-profile design
- High 25 GPM flow
- Corrosion-resistant
- May require special fittings
- Plastic durability
BESEDER Grease Trap Plastic 10 GPM – ASME Certified for Larger Kitchens
The BESEDER 10 GPM grease trap is a step up for larger kitchens. With a 10 GPM flow rate and the same durable 1/4-inch thick plastic construction, it offers reliable performance without rust or leaks. The dimensions (15.75 x 13.2 x 10.63 inches) remain compact, fitting under most sinks.
This ASME-certified trap handles various oils effectively, and the 2-inch thread connection makes installation easy. Its multistage cleaning system ensures efficient grease separation. For restaurants that need more capacity than a 4 GPM model but still want under-sink convenience, this is a great option.
- Higher 10 GPM flow
- ASME certified
- Compact size
- Plastic may be less robust
- Limited to 10 GPM
Zurn GT2700 15 GPM Grease Interceptor – USA-Made Reliability
Brand: Zurn
A trustworthy American-made interceptor for consistent performance.
The Zurn GT2700 is a 15 GPM grease interceptor made in the USA, known for its quality and durability. It features corrosion-resistant coated fabricated steel with a no-hub connection, ensuring a secure fit. The slip-resistant cover and flow diffusing baffle enhance safety and efficiency.
This unit includes an integral trap and an external vented inlet flow control device, optimizing grease removal. The 3/8-inch Allen bolt lift handle assembly makes access easy for maintenance. Recommended for kitchens and restaurants, it’s a dependable choice for moderate grease loads.
- Made in USA
- Corrosion-resistant steel
- Efficient flow control
- No-hub connection may limit options
- Heavier unit
Buyer’s Guide: What to Consider
Selecting the right grease interceptor involves more than just picking a size. You need to consider your kitchen’s specific needs, including capacity, flow rate, material, and installation constraints. This guide breaks down the key factors to help you make an informed decision.
- Capacity: Choose a grease interceptor based on your kitchen's daily grease output. Small operations may need 8-20 lbs, while high-volume restaurants might require 50-100 lbs. Consider your peak hours and dishwashing frequency.
- Flow Rate (GPM): The flow rate, measured in gallons per minute, indicates how much wastewater the unit can handle. Match it to your sink and dishwasher usage. A 4-10 GPM unit suits small kitchens, while 15-25 GPM is better for busy establishments.
- Material: Grease interceptors come in stainless steel, carbon steel, or plastic. Steel is durable and heat-resistant but heavier and prone to corrosion if not coated. Plastic is lightweight, rust-proof, and easier to install but may be less robust under extreme conditions.
- Installation: Consider the space under your sink and the pipe connections. Some units come fully assembled with adapters, while others require additional fittings. Ensure the interceptor fits your plumbing layout and local code requirements.
- Maintenance: Regular cleaning is essential to prevent clogs. Look for features like removable baffles, easy-access covers, and clear indicators for when the unit needs servicing. Some models are easier to clean than others, saving you time and hassle.
Conclusion
Choosing the best grease interceptor depends on your kitchen’s volume, space, and budget. For small operations, compact models like the John Boos GT-8 or BEAMNOVA 8lbs offer efficiency without taking up much room. Medium-sized kitchens will benefit from the balanced performance of the John Boos GT-20 or the BESEDER 10 GPM.
For high-volume restaurants, the John Boos GT-100 or Canplas 3920A02S provide the capacity and flow you need. Always consider material durability and ease of maintenance. With the right interceptor, you’ll keep your plumbing clear and your kitchen running smoothly.
Erica Steven is the founder and lead writer of WorstBrands, a site dedicated to providing honest and trustworthy reviews about outdoor gear and fashion products.
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