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How a Hanging Ventless Hood Works Without Ductwork or a Roof Fan
• Septiembre 14, 2026
Categorías: Ventless Hoods
If a contractor has told you that venting your kitchen is impossible without cutting into the roof, they were working with the wrong hood. A hanging ventless hood handles grease-laden vapors, smoke, and odor capture on its own, no ductwork, no roof fan, no structural sign-off required.
This guide, from the commercial kitchen ventilation experts at HoodMart, takes a closer look at how these ventless kitchen hoods actually work.
No Ductwork = No Roof Penetration
A traditional exhaust hood pulls air through ducts and out through the roof. A hanging ventless hood skips that step entirely. It filters and recirculates air right where it's captured, so there's nothing to run through the ceiling and nothing for a roofing contractor to sign off on.
That matters most when:
• You're in a leased space where roof access isn't allowed
• You're on an upper floor with no direct path to the roof
• Your building has historic or structural restrictions on penetrations
• You need to install fast and can't wait on permits for roof work
UL 710B: the certification that makes it code-legal
"Ventless" alone isn't a code term, and any inspector will tell you that. What actually matters is UL 710B, the listing that governs recirculating Type I hood systems for grease-producing equipment. A hood that carries this listing has been tested for grease capture, filtration, and fire protection as a com...

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Why Your Commercial Kitchen Loses Heat, Comfort, and Money Without Proper Makeup Air
• Septiembre 10, 2026
Categorías: HOOD FACTS, Hoods
If your kitchen runs uncomfortably hot despite a functioning exhaust hood, your back door flies open on its own, or your energy bills seem disconnected from anything you can identify, there is a reasonable chance the culprit is not what you think it ...

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Kidde vs. Ansul: Which Fire Suppression System Is Right for Your Commercial Kitchen?
• Septiembre 04, 2026
Categorías: Fire Suppression
Every commercial kitchen is required to have a fire suppression system installed above cooking equipment. Choosing the right one affects installation time, inspection outcomes, and long-term reliability. HoodMart carries both Kidde and ...

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Steps To Ensure Your Exhaust Hood Is Running Efficiently
• Agosto 31, 2026
Categorías: Hoods
A commercial kitchen exhaust hood does more than clear smoke from the air; it maintains air quality, regulates temperature, captures grease before it becomes a fire hazard, and keeps the kitchen compliant with health and safety codes. When the system...

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Preventative Maintenance Guide For Your Exhaust Hoods
• Agosto 28, 2026
Categorías: Hoods
A commercial kitchen exhaust system works harder than almost any other piece of equipment in the building—pulling heat, smoke, grease, and odors out of the kitchen continuously through every service. Because it runs quietly in the background (a...

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