What is the primary difference between Type I and Type II hoods?

What is the primary difference between Type I and Type II hoods?

• A. Type I hood is for non-grease heat sources and does not require filtration.
• B. Type II hood is for non-grease heat sources and typically does not collect grease.
• C. Type II hood is for grease-laden vapors and requires filtration and a fire suppression system.
• D. Type I hood is smaller and uses less airflow.

Answer: (B)

The main distinction is the air the hood is designed to handle and the safety features that go with it. A hood for grease-laden vapors (Type I) must capture grease and uses grease filtration, plus a fire suppression system because of the grease fire risk. A hood for non-grease heat sources (Type II) handles vapors that don’t carry grease, so grease filtration isn’t needed and the grease-specific fire suppression isn't required. That’s why describing Type II as for non-grease heat sources and not typically collecting grease is the best fit. The other statements misattribute grease handling or safety requirements to the wrong type.

The main distinction is the air the hood is designed to handle and the safety features that go with it. A hood for grease-laden vapors (Type I) must capture grease and uses grease filtration, plus a fire suppression system because of the grease fire risk. A hood for non-grease heat sources (Type II) handles vapors that don’t carry grease, so grease filtration isn’t needed and the grease-specific fire suppression isn't required. That’s why describing Type II as for non-grease heat sources and not typically collecting grease is the best fit. The other statements misattribute grease handling or safety requirements to the wrong type.