Indoor Air Monitoring UK

Office IAQ

Office indoor air quality monitoring for UK workplaces

Office indoor air quality has moved from background engineering to a visible part of how a workplace is run. Continuous, calibrated monitoring turns invisible airflow into evidence — defensible data for FM, HR, tenants and auditors.

CO₂612 ppmPM2.58 µg/m³VOC0.21 mg/m³RH46 %

CO₂ target

< 1000 ppm

PM2.5 target

< 10 µg/m³

TVOC target

< 300 µg/m³

Standard

BS EN 16798-1

01

Why office air quality is now measured, not assumed

Hybrid working patterns have made occupancy unpredictable. Tuesdays and Wednesdays often run at full density while Mondays and Fridays sit at a third. Fixed-schedule ventilation under-ventilates on peak days and over-ventilates on quiet days. Continuous office air monitoring is the only practical way to confirm that the air staff are breathing is being actively managed.

Office air monitoring also closes the gap between design intent and operational reality. Outdoor-air dampers seize, filters are left in place beyond their rated life, and demand-controlled systems are overridden after a single draught complaint. Live data exposes those drifts before they become occupant complaints.

02

What office indoor air quality monitoring covers

Continuous (sensor network): CO₂, PM2.5, TVOC, temperature and relative humidity at breathing-zone height in every occupied zone. Data is logged at 1–5 minute intervals and retained for at least 12 months.

Periodic (annual or after HVAC change): speciated VOC analysis, formaldehyde, NO₂ where street-level intakes are present, and mould where damp history exists. See indoor air quality testing.

On complaint: targeted diagnostic survey in the affected zone, with a defined trigger threshold agreed in advance.

03

The numbers office IAQ is judged against

BS EN 16798-1 Category II is the de facto target for UK offices: 10 l/s/person of outdoor air for sedentary work, CO₂ no more than ~550 ppm above outdoor, ISO ePM1 50% filtration. CIBSE Guide A and TM40 translate these into design and verification practice.

WELL Air, BREEAM HEA 02 and RESET Air increasingly appear in commercial leases. All three require audited continuous data — the office air monitoring programme described above is the evidence layer that satisfies them.

04

What you receive

A live dashboard per building and per floor; monthly trend reports against CIBSE and BS EN 16798-1 thresholds; alerting when zones drift out of band; and an annual technical review summarising performance, complaints and remediation actions. The output stack is designed to satisfy facilities, HR, ESG and tenant relations from a single dataset.

Want a system specified for your portfolio? Request a quote or read more on indoor air quality monitoring.

Next step

Specify office IAQ monitoring for your portfolio

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