• Afternoon dip ≠ only sugar: often indoor climate is the culprit. Higher CO₂ → slower thinking, more mistakes, heavier head.
• Health: in crowded rooms, aerosols spread faster without adequate ventilation. This is not just about viruses; fine dust and VOCs also linger longer.
• Fair comfort: those sitting next to a window do not have the same climate as those sitting in the middle. Good ventilation makes it consistent and quiet everywhere (windows closed).

A cold or flu often starts before you realize it. In crowded rooms, aerosols (tiny droplets we exhale) linger longer without adequate ventilation.

What ventilation does:

• Dilute and dispose of aerosols → lower risk of contamination for colleagues.
• Provides constant renewal of air regardless of weather or ramen policy.
• Makes behavior objective: measurements (CO₂/VOC) indicate when things need to improve.

And what ventilation does not:

• Makes behavior objective: measurements (CO₂/VOC) indicate when things need to improve.
• It is a base layer along with source measures (cough in elbow, distance when
  complaints).

Practical office rules:

• Boost ventilation 15 min before and 15 min after meetings.
• Hou CO₂ < 1.000 ppm tijdens bezetting; streef ±800 ppm in volle ruimtes.
• Combine with local filtering where appropriate (e.g., sensitive areas).

Per space steering, less work, more grip.

• Sophisticated and affordable: each meeting room, open space or IT room gets its own unit with automatic control (CO₂/VOC) and silent night/meeting mode.
• Little breaking: often one core bore per room, fast retrofit. Ideal in existing buildings or rental properties.
• Measurable & visible: real-time values on a display or dashboard. Transparency ensures less discussion and more trust.
• Hygiene: filters at the source, no long ductwork throughout the building. Maintenance is simple and schedulable.

• Heavy air, headache or burning eyes after noon.
• Many yawning and lower concentration during meetings.
• CO₂-meter which regularly >1,000 ppm ticks; peaks at full occupancy.
• Complaints about odor, heat and noise because windows have to open.
• More "hitchhikers": colds seem to be going around longer in the workplace.

• Target values: keep CO₂ around 800-1,000 ppm during occupancy. Lower is better; keep peaks short.
• Vent amount: aim at approximately 10 liters/s per person for normal office activity.
• Smart control: lets the unit automatically up based on CO₂/VOC and use a boost for peak moments (start of meetings, full open space).
• Soft acousticsChoose appliances that are whisper quiet ventilate in base mode and are audible only in short boosts.

• Sharper thinking (fewer mistakes, faster decisions).
• Less burden of illness and complaints (fewer headaches, fewer irritations).
• Quieter work floor: windows can be closed → less street noise and pollen/dust indoors.
• Support: visible measurements make comfort objective. Everyone sees when it's right - or needs to be better.

• Location CO₂-meters in strategic places; make values visible.
• Start with the problem spaces (full meeting rooms, open spaces, IT rooms).
• Opt for decentralized units per room; schedule maintenance 2×/year (filters).
• Establish a protocol: at >1,000 ppm → check occupancy/boost/window policy.