Commercial Kitchen Exhaust in Switzerland: Statutory Obligations

1. Legal Framework: VKF, SWKI, and VDI Overview

In Switzerland, fire protection is enforced cantonally but unified under the Association of Cantonal Fire Insurers (VKF). For commercial catering establishments, VKF Fire Safety Guideline 25-15 'Ventilation Systems' is legally binding.

Supplementary recognized engineering standards include SWKI VA102-01:2009 ('Ventilation Systems for Commercial Kitchens') and German guideline VDI 2052, commonly applied in Swiss practice for sizing and fire safety.

• VKF 25-15 Section 4.3: Ventilation installations must be maintained so that hazardous grease deposits cannot accumulate and fire transmission is prevented.
• SWKI VA102-01: Specifies mandatory aerosol separator standards (Type A or B) and separation distances from open cooking surfaces.
• Art. 257 Swiss Code of Obligations (CO): Commercial tenant duty of care toward building structures and technical installations.

2. Mandatory Cleaning and Inspection Intervals

Required inspection and cleaning frequencies depend directly on commercial kitchen grease volume and operating hours:

• Grease aerosol filters: Weekly cleaning by kitchen staff using commercial dishwashers or soaking tanks.
• Extraction hoods and collection gutters: Monthly deep hot-water degreasing.
• Horizontal and vertical exhaust ductwork: At least every 12 months; every 6 months for heavy cooking (woks, commercial fryers, solid-fuel grills) by a certified specialist.
• Exhaust fan and rooftop extractor: Annual technical inspection and motor degreasing.

3. Inspection vs. Cleaning: Who is Authorized?

Swiss regulations distinguish between routine kitchen maintenance and certified fire safety remediation.

Routine hood wipe-downs and filter washes can be performed by in-house staff. However, cleaning entire duct networks, access doors, and exhaust blowers requires high-pressure hot water and chemical saponification agents.

Property insurers and local fire authorities require formal certification from a recognized cleaning specialist confirming smoke-tight resealing of all access panels.

4. What Property Insurers (GVZ) Require Following a Fire

In commercial kitchen fires, grease accumulations inside ductwork are the primary cause of rapid fire spread into upper building floors or adjacent properties.

Following an incident, the cantonal building insurer (GVZ in Zurich) and commercial property insurers demand complete inspection logs.

In the absence of written proof of certified duct cleaning, insurers may reduce or deny claims citing gross negligence under Art. 14 of the Swiss Insurance Contract Act (VVG).

5. How Mondar Coordinates Restaurant Compliance

Mondar serves as the central contracting platform. We schedule certified Swiss partner companies during kitchen downtime (night shifts or rest days).

Upon completion, you receive a digital, audit-proof inspection protocol with before-and-after photos ready for filing with the local fire marshal and building insurer.