Hygiene Inspection Checklist for HVAC Systems (VDI 6022)

Maintenance vs. Hygiene Inspection: A Key Distinction

In facility management, technical maintenance and hygiene inspections are often confused. While standard maintenance focuses on mechanical function, energy efficiency, and system preservation, a hygiene inspection according to standards like VDI 6022 specifically targets biological safety.

The hygiene inspection analyzes whether the HVAC system is contaminated with microorganisms, mold, or bacteria that could be released into the indoor air. Standard technical maintenance is not sufficient to meet health and safety regulations.

Detailed Inspection at Component Level

A compliant inspection requires a close look at every single component of the ventilation system. Our template guides you step-by-step through all relevant parts:

You can easily rate specific parameters such as dirt accumulation, lime deposits, standing water, or damaged silencer linings. This granular approach ensures that no hygienic risk is overlooked.

• Filter Stages: Proper fit, bypass leakage, dirt accumulation, and lifetime
• Humidifiers & Coolers: Assessment of biofilms and proper drainage functionality
• Fans & Silencers: Material condition and potential fiber release
• Condensate Trays: Slope and unobstructed drainage of water

Microbiological Sampling and Lab Integration

Visual inspection is only the first step. A reliable statement about the hygiene status of an HVAC system often requires microbiological testing.

Using the ProtocolHero app, you can log all sampling locations (swabs, dip slides, air samples) with photos and IDs. Once the laboratory results are ready, you can easily input the values and attach the original laboratory certificate directly to the digital report.

Digital Defect and Action Tracking

If a hygiene defect is detected during the inspection, immediate action is required. Our template includes an integrated defect level system to classify risks on the spot.

For every defect, you can assign a photo, a priority level, the required corrective action, a deadline, and the responsible person. This provides the operator with a clear roadmap, and the status can be tracked digitally until the issue is resolved.