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  1. How a Commercial Hood System Actually Works, From Grease Cup to Rooftop Fan

    How a Commercial Hood System Actually Works, From Grease Cup to Rooftop Fan

    Most commercial kitchen owners can point to their exhaust hood. Far fewer can explain what happens between the moment smoke leaves the fryer and the moment it exits the building, and that gap in knowledge has a way of showing up on health inspection reports. A commercial kitchen hood system is not a single appliance. It's an orchestrated sequence of 18+ components working in concert, and understanding how they connect is the difference between a kitchen that passes code and one that doesn't.

    This guide from the pros at HoodMart walks through the full system, from the grease cup at the base of your hood to the exhaust fan on your roof, using HoodMart's Hood Install Diagram as a reference. Whether you're planning a new installation or troubleshooting an existing one, consider this your definitive primer.

    Type 1 vs. Type 2 Commercial Kitchen Hood: Start Here

    Before diving into individual components, it helps to know which class of hood you're working with. The distinction matters enormously for installation, compliance, and cost.

    A Type 1 hood is designed for cooking equipment that produces grease-laden vapors. Think of things like fryers, griddles, char-broilers, and woks. It includes built-in grease filters and a grease collection system, and it must be connected to a dedicated exhaust ...

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  2. ETL vs UL Listed: What’s the Difference in Commercial Kitchen Equipment?
    When selecting commercial kitchen equipment, safety certifications matter. Two of the most common are UL Listed and ETL Certified, but what do they actually mean, and is one better than the other? Here’s a clear breakdown of commercial kitchen ...

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  3. Rooftop Grease Buildup and How To Prevent It
    Rooftop Grease Buildup: Causes, Risks, and How to Prevent It Rooftop grease buildup is a common (and often overlooked!) issue in commercial kitchens. If your commercial kitchen exhaust hood system isn’t properly maintained, grease can escape t...

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  4. Roof Curbs for Exhaust Fans: A Complete Guide
    A roof curb might look simple, but it plays a critical role in your commercial kitchen ventilation system. If you’re installing an upblast exhaust fan, choosing the right roof curb for an exhaust fan ensures proper support, weather protection, ...

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  5. Hood Placement and Clearance to Combustibles - What it Means & Why it Matters
    Getting hood placement and clearance right isn’t optional; it’s critical for safety, performance, and passing inspection. In this guide, HoodMart breaks down commercial kitchen hood clearance requirements, what “clearance to combus...

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