If you’ve ever worked in commercial kitchens, you’ve probably heard of DW172. It’s a crucial standard for kitchen ventilation, but what exactly does it mean, and why does it matter? Let’s break it down in simple terms.
So What Actually is DW172?
DW172 is a set of guidelines published by the Building Engineering Services Association (BESA) that lays out the best practices for commercial kitchen ventilation. The full title is ‘Specification for Kitchen Ventilation Systems,’ and it provides detailed advice on how to design, install, and maintain extraction systems in catering environments.
These guidelines help keep kitchens safe, efficient, and legally compliant. They cover everything from airflow rates and ductwork to fire suppression and grease management. While not a legal requirement on its own, DW172 is widely accepted as the industry standard in the UK, making it essential for anyone involved in kitchen design or maintenance.
Why Was it Created?
Before DW172, kitchen ventilation was often inconsistent. Some systems were overpowered and wasted energy, while others were underpowered and left kitchens hot, greasy, and unsafe. DW172 was developed to standardise ventilation across the industry, offering clear rules that help create comfortable and compliant working environments.
Fire safety was also a major reason for its introduction. Grease build-up in ductwork is a serious fire hazard, and poorly designed ventilation can make the problem worse. By following DW172, businesses can significantly reduce the risk of kitchen fires.
What Does DW172 Cover?
Airflow and Extraction Rates
It specifies how much air needs to be extracted based on the type of cooking being done. A kitchen with open-flame cooking, for example, will need a stronger extraction system than one that only uses electric griddles.
Canopy Design and Placement
Not all extraction canopies are created equal. DW172 provides guidance on their size, position, and construction. It states that canopies should extend beyond the cooking equipment to capture fumes properly.
Ductwork and Grease Management
Grease is one of the biggest challenges in kitchen ventilation. DW172 sets out best practices for ducting, including the need for regular access panels for cleaning. This is crucial because grease can accumulate in hard-to-reach places, increasing the risk of fire.
Fire Safety Measures
Fire safety is a huge part of DW172. It advises on fire-rated ductwork, fire suppression systems, and grease filters to help prevent fires from spreading. Many insurers and fire safety inspectors refer to DW172 when assessing kitchen ventilation systems.
Fresh Air Supply
While extraction is essential, kitchens also need fresh air. DW172 specifies how much replacement air should be introduced to avoid negative air pressure. If too much air is removed and not enough is replaced, doors may slam shut unexpectedly, and combustion appliances might not work properly.
Is DW172 a Requirement in the UK?
No, DW172 itself isn’t a legal requirement. However, many of its recommendations align with legal requirements under the Health and Safety at Work Act and the Regulatory Reform (Fire Safety) Order. Environmental health officers and fire inspectors often expect compliance with DW172, so following it is a smart way to stay on the right side of regulations.
The Hidden Costs of Ignoring DW172
Many businesses overlook ventilation because it’s out of sight, but ignoring DW172 can be expensive. A poorly designed system can lead to:
- Higher energy bills due to inefficient extraction
- Frequent breakdowns and costly repairs
- Increased fire risk and potential legal issues
- Uncomfortable working conditions for kitchen staff
One study found that up to 80% of commercial kitchen fires are linked to ventilation system grease build-up. That’s a shocking statistic and a strong reason to take compliance seriously.
Common Misconceptions About DW172
“I Don’t Need to Worry About DW172 in a Small Kitchen”
Even small kitchens generate heat, smoke, and grease. While large-scale operations might need more extensive systems, DW172 provides useful guidance for kitchens of all sizes.
“My Ventilation System Was Installed Years Ago, So It Must Be Fine”
Kitchen ventilation systems require regular maintenance. If your system was installed before the latest DW172 update, it may not meet current best practices.
“I Can Just Install a Powerful Fan and Be Done With It”
Ventilation is about more than just extraction. A properly balanced system considers supply air, ductwork design, and grease management, not just fan power.
Where to Find the Full DW172 Specification
BESA publishes DW172, and you can purchase the full specification from their official website. For more information, check out BESA’s official page where they provide resources and updates on industry standards.
How Can You Ensure DW172 Compliance?
If you’re unsure whether your kitchen meets DW172 standards, it’s worth speaking to an expert. At Corsair we offer:
- Bespoke stainless steel canopies built to DW172 specifications
- High efficiency ductwork and extraction systems
- Fire suppression solutions to improve safety
- Routine maintenance and compliance checks
With years of experience in the industry, we work closely with businesses to create ventilation solutions that are both functional and reliable. If you’re unsure whether your kitchen meets DW172 standards or you need expert advice, get in touch with us on 01295 267021 today. Let’s make your kitchen safer, more efficient, and fully compliant.