In a mobile kitchen, ventilation is not optional—it’s essential. Cooking in a confined space generates heat, grease, smoke, and moisture, all of which must be properly managed to ensure safety, hygiene, and compliance with UK regulations. Whether you’re operating a burger truck, a pizza van, or a vegan street food concept, understanding ventilation and extractor requirements is critical from day one.
This guide explains how ventilation systems work, what the legal expectations are in the UK, and how to design an efficient setup for your food truck.
Why Ventilation Is Crucial in Mobile Kitchens
Air Quality and Staff Comfort
Without proper airflow, temperatures inside a food truck can quickly become extreme. A good ventilation system removes hot air, steam, and odours, keeping the working environment safe and manageable.
Fire Safety
Cooking releases grease particles that can accumulate in the air and ducting. An effective extractor system helps reduce fire risk by capturing and filtering these particles before they build up.
Hygiene and Food Safety
Condensation caused by poor ventilation can lead to bacterial growth and contamination risks. Extractor systems help maintain a clean and controlled cooking environment.
Legal Compliance
UK Environmental Health Officers (EHOs) check ventilation during inspections. Failure to meet requirements can lead to fines, forced closure, or insurance issues.
Key Components of a Food Truck Ventilation System
A complete system includes several elements working together:
Extractor Hood
Positioned above cooking equipment, the hood captures heat, smoke, and grease at the source. It must fully cover all cooking appliances.
Grease Filters
Installed inside the hood, these filters trap grease particles before air enters the ducting system. Baffle filters are the most recommended for food trucks.
Extractor Fan
The fan pulls contaminated air through the system and expels it outside the truck. It must be powerful enough to handle your cooking volume.
Ducting System
Ducts channel the air from the hood to the exterior. They should be short, straight, and made from fire-resistant materials.
Vent Outlet
The final exit point where air is safely released outside. This must be positioned away from service windows and customer areas.
Make-Up Air
As air is extracted, fresh air must enter the truck to maintain pressure balance. This can be achieved through vents or dedicated intake systems.
UK Ventilation and Extractor Requirements
While food trucks are smaller than commercial kitchens, they are still expected to meet strict health and safety standards. Key requirements include:
- Ventilation systems must effectively remove heat, steam, and grease-laden air
- Extractor hoods must be installed over all cooking equipment producing fumes
- Ducting must be fire-resistant and easy to clean
- Systems must be regularly maintained and cleaned
- Installations must comply with gas and electrical safety regulations
- Fire safety measures (such as extinguishers or suppression systems) must be in place
Environmental Health Officers assess whether your setup is “fit for purpose”, meaning it must match your cooking intensity and menu.
How to Size Your Extractor System
Choosing the right extractor capacity is crucial. This is typically measured in CFM (cubic feet per minute) or airflow rate.
General Guidelines
- Light cooking (coffee, crepes): 500–1,000 CFM
- Medium cooking (burgers, wraps): 1,000–2,000 CFM
- Heavy cooking (deep frying, grilling): 2,000+ CFM
Undersized systems lead to poor airflow, while oversized systems can waste energy and increase costs.
Types of Ventilation Systems
Standard Extraction Systems
The most common setup, using a hood, fan, and ducting to remove air outside the truck.
Recirculating Systems with Carbon Filters
These systems filter and recirculate air instead of venting outside.
Pros:
- Easier installation
- No external ducting required
Cons:
- Less effective for heavy grease cooking
- Filters require frequent replacement
Hybrid Systems
Combine extraction with additional filtration or air intake systems to improve efficiency.
Installation Best Practices
- Position the hood directly above all heat sources
- Keep ducting runs as short and straight as possible
- Use stainless steel materials for durability and hygiene
- Ensure proper sealing to prevent leaks
- Install access points for easy cleaning
Professional installation is strongly recommended to meet compliance standards.
Cleaning and Maintenance Requirements
A ventilation system is only effective if it is properly maintained.
Daily
- Wipe down hood surfaces
- Remove visible grease buildup
Weekly
- Clean grease filters thoroughly
- Inspect fan operation
Monthly
- Check ducting for grease accumulation
- Test airflow performance
Periodic Professional Cleaning
Deep cleaning of ducting and internal components is essential to prevent fire hazards and maintain efficiency.
Neglecting maintenance can result in reduced performance, safety risks, and failed inspections.
Common Mistakes to Avoid
- Installing an extractor system that is too small
- Using low-quality or non-compliant materials
- Ignoring make-up air requirements
- Failing to clean filters regularly
- Positioning vents too close to customers
Avoiding these errors ensures smoother operations and fewer regulatory issues.
Ventilation and Energy Efficiency
Efficient ventilation systems can help reduce overall energy consumption. Options include:
- Variable-speed extractor fans
- Energy-efficient motors
- Smart airflow control systems
Combining efficient ventilation with a well-designed power setup (generator, LPG, or hybrid) improves overall performance and cost control.