Guest reviews of "stuffy rooms" and "smelly restaurants" translate directly into rating drops on Booking.com, TripAdvisor and Google. Wellness-led brands (Equinox, Soho House, premium spas) increasingly publish IAQ data as part of their value proposition.
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Why hospitality IAQ matters commercially
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Commercial kitchens
Kitchen extract must balance with makeup air per HVCA DW172 — under-balanced systems pull cooking aerosols into dining areas. PM2.5 and VOC monitoring at the kitchen/dining boundary surfaces problems before guests do.
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Guest rooms and spa areas
Target 4–6 ACH, 40–60% RH, CO₂ <1000 ppm. Spa and pool environments need chloramine control through dedicated dilution ventilation. Humidity & health →
