Indoor Air Monitoring UK

Ventilation

Office ventilation monitoring, workplace ventilation assessment and fresh-air testing

Ventilation is the lever with the largest effect on indoor air quality — and the one most often degraded by years of building life. Continuous ventilation monitoring proves that outdoor air is actually reaching occupants, not just being specified on a drawing.

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

Design rate

10 l/s/person

CO₂ proxy

< 1000 ppm

Filtration

ISO ePM1 50%

Standard

BS EN 16798-1

01

How we monitor and test ventilation

Continuous monitoring: CO₂ sensors in every occupied zone act as a real-time proxy for outdoor-air supply. Decay curves after occupancy peaks expose under-performing zones long before complaints surface.

Fresh-air ventilation testing: measured outdoor-air flow rates at AHUs and terminals using calibrated anemometry and tracer-gas techniques, benchmarked against BS EN 16798-1 Category II.

Workplace ventilation assessment: a written engineering review combining design intent, commissioning records, current measurements and a remediation roadmap.

02

Why ventilation evidence matters now

HSE Regulation 6 requires effective and suitable provision of fresh or purified air. Lease ESG clauses increasingly require continuous evidence. Demand-controlled ventilation — the modern default — only works when its sensor feed and damper response are independently verified.

Read more on ventilation assessment and building ventilation.

03

What you receive

A measured outdoor-air report per AHU and per floor, a CO₂-based zone performance map, a prioritised remediation list with engineering cost guidance, and ongoing dashboards if a continuous programme is selected. The output is auditor-ready for both HSE inspection and WELL/BREEAM evidence packs.

Pair with carbon dioxide monitoring for the live evidence layer, or with workplace IAQ monitoring for full coverage.

Next step

Book a workplace ventilation assessment

Request a quote