A revised European standard, what exactly has changed?

From July 2025, the new European standard EN 15780:2025 comes into effect. This replaces the old EN 15780:2011 and introduces important technical changes that directly affect the cleaning and maintenance of ventilation and kitchen extraction systems. At Hamster Cleaning, we follow these new guidelines closely, ensuring our customers are guaranteed the highest quality and safety.

1. Specific guidelines for commercial kitchen extraction (Annex J)

The 2025 version now includes, for the first time, clear guidelines for commercial kitchen ventilation systems, including ventilation hoods, ducts, fans and carbon filters.

Key points:

• Grease storage limits:
• Average grease thickness ≥ 200 µm → full cleaning recommended
• Local peaks ≥ 500 µm → immediate, urgent cleaning
• Test method: the Wet Film Thickness Test (WFTT) is recommended. After cleaning, no measurement may exceed 50 µm.

In concrete terms, this means that Hamster Cleaning can now assess even more precisely and safely when and how kitchen extraction systems need to be cleaned.

2. New Wiping Test for on-site checks (Annex K)

The standard also introduces a manual wiping test to check the cleanliness of ventilation systems on-site.

Acceptable values:

• Upper limit for cleaning: 4.0 g/m²
• Successful cleaning: 2.0 g/m²
• New components prior to commissioning: 2.0 g/m²

This method is just as reliable as the well-known vacuum test and provides a practical way to also assess stubborn contamination.

3. Adjustments in cleanliness levels and extraction ducts

The basic principles for cleanliness classes of air ducts largely remain the same:

• Low: < 4.5 g/m²
• Medium: < 3.0 g/m²
• High: < 0.6 g/m²

For extraction ducts, the maximum acceptable dust load is now uniformly 9.0 g/m² for all quality classes, a clarification compared to the old standard.

4. Update in airtightness requirements

The new standard refers to EN 16798-3 for airtightness classes, ensuring better alignment with modern ventilation systems:

• Basic → ATC 4
• Intermediate → ATC 3
• Advanced → ATC 2

What does this mean for our customers?

For our customers, the EN 15780:2025 standard guarantees:

• More precise and safer cleaning of ventilation and kitchen extraction systems
• Clear standards for grease and dust measurements
• Reliable methods to evaluate cleanliness

Conformity with the latest international regulations

At Hamster Cleaning, we apply these guidelines strictly, ensuring that every system we clean meets the highest quality requirements.

Interested in learning more about what EN 15780:2025 entails? Contact us!