Guide
Food truck / trailer hood cleaning special cases
A grease-producing cookline on wheels is still a commercial cooking operation. Compact ducts and short fan runs do not exempt you from exhaust cleaning, suppression ITM, or the paperwork fire inspectors ask to see. Mobile units add access, water, and multi-jurisdiction quirks brick-and-mortar kitchens rarely face — but volume-based inspection/cleaning logic still applies under the NFPA 96 edition (and fire code) your AHJ adopts. AHJ wins. Not legal advice.
Short answer
If appliances produce grease-laden vapors, expect a Type I hood path, listed filters, automatic wet-chemical suppression, Class K coverage, and professional exhaust cleaning on a volume-driven cadence — same family of rules as a storefront, often with mobile-specific chapters or IFC §319-style permit rules layered on. Confirm the edition your city/county actually adopted. Keep cleaning + suppression tags and reports in the truck. Hire a cleaner who has worked compact mobile systems and can meet you at the commissary. Suppression service is still a separate licensed job.
How mobile exhaust differs from brick-and-mortar
| Topic | Brick-and-mortar | Truck / trailer |
|---|---|---|
| System size | Longer ducts, rooftop fan, access panels along the run | Short, compact path; grease concentrates faster in a small volume |
| Access | Fixed site; roof ladder / hinge kits | Confined cabin; cleaner may need commissary bay, water, and wastewater plan |
| Vibration / road wear | Static mounts | Secondary mobile guides: road vibration stresses suppression, fittings, and detectors — inspect more carefully |
| Jurisdiction | One primary fire/health AHJ | Often multiple cities/events; keep docs aboard for whoever opens the door |
| Fuel adjacency | Building gas / electric | LP/CNG onboard — clearance, detectors, and annual fuel-system checks appear on many mobile checklists |
Type I vs Type II (secondary)
- Type I (grease): deep fryers, griddles, charbroilers, woks, solid-fuel — grease-laden vapors; listed grease filters; usually automatic suppression over the appliances
- Type II (heat/steam): equipment that does not produce grease-laden vapors (e.g., some dishwashers, ovens producing only heat/steam) — secondary education pages; local code definitions control
- If you fry, char, or wok on the truck, plan on Type I rules for hood, filters, cleaning, and suppression — not a condensate hood sold as “good enough”
- Confirm appliance list vs hood listing with your fire inspector before you buy or remodel a unit
Frequency still follows volume — AHJ edition wins
Field note — same table logic, tighter box
- Secondary NFPA summaries still sort solid-fuel / high / moderate / low volume for inspection cadence; cleaning when grease exceeds depth / condition triggers
- NFPA 96 editions from 2024 forward add explicit mobile / temporary cooking material (secondary: Ch. 17 / related mobile chapters — confirm the edition your AHJ adopted)
- Many IFC-adopting cities use mobile food preparation vehicle rules (commonly cited as IFC §319 patterns): Type I hood where grease vapors exist, exhaust inspected/cleaned per the adopted table, suppression maintained on its own cycle
- Visible grease in a shallow truck hood can hit “clean now” faster than a deep restaurant plenum — inspect between professional visits
Permit / fire patterns (general — verify locally)
| Pattern seen in public checklists | What operators usually prepare |
|---|---|
| Operational / fire permit for mobile food | City or county fire permit when appliances produce smoke or grease-laden vapors |
| Hood + suppression present and tagged | Current suppression service tag (often semiannual); hood cleaning report/date available |
| Filters listed (e.g., UL 1046 language on local forms) | Correct filters installed and cleaned; no missing baffles |
| Class K + ABC extinguishers | Mounted, accessible, tagged; see Class K placement guide for portable rules |
| LP/CNG documentation | Annual fuel-system inspection tags / fill receipts as the local form requires |
| Docs kept in the vehicle | Cleaning reports, suppression reports, permits — secondary state checklists explicitly say keep them aboard |
These are recurring patterns from public fire-department checklists and secondary mobile-cooking explainers — not a national permit. Your event city can still require its own inspection even if another city tagged you last month.
What cleaners can / cannot do on mobile units
Reasonable cleaner scope
- Full compact path to bare metal where accessible: hood, filters, short duct, fan
- Before/after photos + written report + service label/sticker
- Work at commissary or arranged parking with water / waste plan
- Flag inaccessible or damaged sections in writing
Out of scope / walk-away
- “Filter wipe only” sold as fire-code compliance
- Suppression nozzle service without a fire-protection license
- No photos, no report, cash-only with no entity
- Promises that one sticker covers every city you vend in
Documentation binder for the truck
- Latest hood/exhaust cleaning report with date, company, and what was cleaned
- Before/after photos (phone backup + printed or PDF in the cab)
- Current automatic suppression inspection tag / report (separate contractor)
- Extinguisher tags; Class K present if grease cooking
- Local fire / mobile-food permit(s) for cities you regularly work
- LP/CNG inspection evidence if your AHJ checklist requires it
- Commissary contact who can confirm where the unit was cleaned if asked
Who it’s for / not for
- For: food-truck and trailer operators; commissary managers who host mobile units; event organizers vetting vendor paperwork
- Not for: designing a truck from scratch without an AHJ conversation, DIY “certificate” claims, or legal/insurance advice
Sources
- UpCodes — NFPA 96 (2024) Chapter 17 Mobile and Temporary Cooking Operations (code mirror; confirm the edition your AHJ adopts)
- Commercial Fire — food trucks and NFPA 96 compliance (secondary; mobile chapter framing, maintenance intervals overview, elevated risk notes)
- FindHoodCleaner — food truck hood cleaning requirements (secondary; NFPA applicability to mobile units, access/commissary logistics, documentation aboard)
- Brothers Fire & Security — food truck codes & safety (secondary; Type I vs Type II education, suppression vs cleaning cadence notes)
- City of Tulsa — IFC 319 mobile food preparation vehicles checklist (PDF) (official local pattern; hood, maintenance, fuel — AHJ-specific)
- WSAFM — Washington food truck inspection checklist (PDF) (official multi-jurisdiction pattern; docs to keep in the truck)
- City of Tulsa — mobile food preparation vehicle packet (PDF) (official; Type I hood, six-month inspection/clean language, bring cleaning docs to inspection)
Next step
Pull last year’s cleaning and suppression paperwork into one waterproof folder in the cab. Call one cleaner who lists food trucks / trailers, meet at the commissary, and ask for the same photo + report stack a brick-and-mortar would get — then confirm your primary city’s mobile-food fire checklist before the next event.