What Is NFPA 96?

NFPA 96 is the National Fire Protection Association's Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations. It's the rulebook that fire marshals reference during inspections, that insurance carriers reference during underwriting, and that local building codes adopt by reference in most U.S. jurisdictions — including all five states we service.

Not optional. Not advisory. It's the standard your kitchen is held to every day, whether you've read it or not.

NFPA 96 covers everything from hood construction to fire suppression systems to ventilation duct design. The sections that matter most for grease filters are 6.1, 6.2, and Chapter 14 (for solid fuel cooking). Here's what each one actually requires.

Key NFPA 96 Requirements for Commercial Kitchen Grease Filters

Section 6.1.1 — Approved Filters Required

Every Type I commercial kitchen hood must have approved, listed grease filters or other approved grease removal devices in place. Translation: if you cook with grease-producing equipment under a Type I hood, you must have a UL-listed grease filter installed. Aluminum mesh, cardboard frames, and any non-listed substitute all fail this requirement.

What NFPA 96 Section 6.1.1 Requires

Type I hoods must use approved, listed grease filters made of stainless steel or another listed material that suits the application. The filters have to be installed in the hood and arranged so all exhaust air passes through them.

Sections 6.2.1–6.2.3.5 — Filter Construction & Cleaning

These sections cover how filters must be built and how they must be maintained. Three requirements drive everything:

• Filters must be of substantial construction — commercial-grade, not residential
• They must be arranged so grease drains into a sealed grease cup or container
• They must be accessible for cleaning, and cleaned at frequent intervals

"Frequent intervals" is where most kitchens get tripped up. NFPA's interpretation depends on cooking volume. High-volume operations and wok stations typically need biweekly cleaning to stay compliant. Sit-down restaurants and lower-volume operations are usually fine on a monthly cadence. Solid fuel cooking operations can require even more frequent cleaning under Chapter 14.

What NFPA 96 Sections 6.2.1–6.2.3.5 Require

Grease filters need to be commercial-grade, arranged so grease drains into an approved collection container, and accessible for cleaning. Cleaning has to happen at intervals appropriate for the kitchen's cooking volume.

Chapter 14 — Solid Fuel Cooking Operations

If your kitchen runs a wood-fired oven, charcoal grill, or any solid fuel cooking equipment, additional requirements apply on top of the base NFPA 96 standard. Spark arrestors are required to prevent embers from reaching the exhaust ductwork. Cleaning frequency increases. In many cases, the solid fuel exhaust must be on a separate system from your grease-producing cooking equipment.

If you've added a wood-fired pizza oven, a charcoal hibachi station, or any solid fuel cooking equipment since your last inspection, that's a conversation worth having before the next one — Chapter 14 requirements may apply to your setup.

Want to read the full NFPA 96 code? NFPA offers free online access to the complete standard at nfpa.org/free-access. The summaries on this page are not a substitute for the published code.

The EPA Clean Water Act: The Part Most Kitchens Miss

When a grease filter gets cleaned, that wastewater is regulated. It contains FOG (fats, oils, and grease) at concentrations that violate most municipal pretreatment ordinances and the federal Clean Water Act.

It can't legally be discharged to a sanitary sewer in most jurisdictions. Storm drains are off-limits anywhere. In some cases, permeable ground isn't an option without a permit.

Local Enforcement Has Tightened Significantly

In the last five to seven years, local enforcement of FOG discharge has stepped up dramatically across New England. Plumbing inspectors, sewer authorities, and fire departments increasingly cross-reference hood cleaning logs with pretreatment compliance reports. The kitchens that get caught aren't always doing something obvious. Sometimes their paperwork just doesn't line up when an inspector looks at it all together.

The fines run from $2,500 to $50,000 per day, per violation. That's why we handle all filter cleaning at our facility — the wastewater is disposed of according to Clean Water Act requirements, and nothing goes down your kitchen's drain.

Your filter cleaner's compliance becomes your compliance. Whether you knew about it or not.

Why Grease Is the Real Fire Risk

The compliance language can sound dry. The fire statistics aren't.

• Cooking equipment is the leading cause of structure fires in restaurants in the United States
• A significant share of those fires originate in or spread through hood and exhaust systems
• Fires that involve grease buildup in hoods cause disproportionately greater damage than other kitchen fire types — they spread faster, burn hotter, and reach structural elements more quickly
• Restaurants that experience a major kitchen fire often don't reopen — even with insurance coverage

How Tiger Exchange Removes the Grease Problem

Grease is the compliance risk. Tiger Exchange takes it off your property — capturing it in UL-listed filters, cleaning it off-site, and disposing of the wastewater according to Clean Water Act requirements. Here's how the program addresses each part of the grease-handling chain.

• UL 1046 listed stainless steel baffle filters — the approved, listed filter type NFPA 96 Section 6.1.1 requires
• Scheduled exchange frequency calibrated to your cooking volume — supports the "frequent intervals" standard in NFPA 96 Sections 6.2.1–6.2.3.5
• Off-site cleaning at our facility — your kitchen doesn't generate FOG wastewater from filter cleaning anymore
• EPA-compliant grease and wastewater disposal handled at our end — nothing gets discharged from your kitchen
• Service documentation sent automatically the next business day after every exchange — your records to use for your fire marshal, your insurance audits, or your own files