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Industrial Hygiene

Indoor Air Quality and Ventilation Assessment

Indoor air quality surveys and local exhaust ventilation validation for healthy and productive workplaces

Programme overview

Indoor Air Quality
and Ventilation Assessment

Indoor air quality is easy to overlook precisely because its effects are diffuse, since headaches, fatigue, irritation, lost productivity and longer term health harm rarely point cleanly back to the air, and yet they are often driven by it. An assessment turns that vague complaint into a measured exposure picture, namely the contaminants actually present such as volatile organic compounds, respirable and fine particulates, carbon monoxide and carbon dioxide as ventilation markers and biological agents, and just as importantly whether the ventilation is delivering enough clean air to the right places to control them. Our team benchmarks conditions against the WHO, ASHRAE 62.1 and ACGIH guidance, distinguishes a source problem from a ventilation problem and specifies ventilation and source control upgrades aligned to ISO 16000, so that the intervention fixes the cause rather than masking the symptom.

Indoor Air Quality and Ventilation Assessment Overview
How we deliver it

Our implementation model

We fix the standards that apply to your site before we open at iaq complaint investigation & baseline, and we do not close at iaq monitoring & continuous improvement until they are met.

IAQ Complaint Investigation & Baseline

Investigate IAQ complaints per AIHA / NIOSH / EPA BAQ / WHO IAQ, symptom survey, occupant interview, walkthrough, establish baseline measurement plan per ASHRAE 62.1 / EN 13779.

IAQ Parameter Measurement

Measure IAQ parameters, CO₂ (proxy for ventilation), CO, PM2.5 / PM10, total VOC (PID), formaldehyde, radon, mould (viable / total spore count), temperature, humidity, align with ASHRAE 62.1 / EU EN 16798.

HVAC System Performance Evaluation

Evaluate HVAC per ASHRAE Standard 62.1, outdoor air supply rate (cfm per person), filtration (MERV rating), economiser operation, controls, condensate management, maintenance frequency, align with LEED IEQ credits.

Source Control & Remediation Design

Design source control, VOC source removal (low emission materials per LEED / EU GreenBuilding), mould remediation (IICRC S520), CO source elimination (gas appliance), radon mitigation (sub slab depressurisation per EPA 625).

Ventilation Upgrade & Filtration Design

Design ventilation upgrade per ASHRAE 62.1 / 62.2, increase outdoor air, demand controlled ventilation per CO₂, MERV 13+ filtration, UVGI (ultraviolet germicidal irradiation) where applicable per ASHRAE 185.

IAQ Monitoring & Continuous Improvement

Implement IAQ continuous monitoring (CO₂, PM, VOC) per LEED OM / WELL Building Standard, specify monthly review and corrective action workflow, align with HVAC commissioning and continuous commissioning.

What the programme covers

Indoor Air Quality in full scope

Monitoring of carbon monoxide and carbon dioxide, volatile organic compounds, formaldehyde and fine and respirable particulate
Bioaerosol and microbial assessment
Evaluation of thermal comfort and ventilation effectiveness
Inspection of local exhaust ventilation
A review of HVAC commissioning and recommissioning
A filtration upgrade and outdoor air optimisation
An indoor air quality improvement plan with KPI tracking
Indoor Air Quality and Ventilation Assessment Coverage
Business value

Value of Indoor Air Quality and Ventilation Assessment

Indoor Air Quality Contaminant and Occupant Health
  • We cut respiratory and irritant exposure sharply
  • We identify microbial contamination before it harms health
  • We improve thermal comfort and worker wellbeing
  • We strengthen the effectiveness of your emergency ventilation
ASHRAE 62.1 and EPA Indoor Air Quality Defence
  • You maintain compliance with ASHRAE 62.1 and the WHO indoor air quality guidance
  • You document the ISO 16000 sampling protocols
  • You support ISO 45001 and green building certification
  • You withstand worker complaint investigations
HVAC Design and Indoor Air Quality Monitoring Quality
  • We sharpen productivity through better indoor air quality
  • We reduce the absenteeism linked to sick building syndrome
  • We optimise your HVAC energy through outdoor air control
  • We sharpen your local exhaust ventilation inspection regime
Indoor Air Quality Complaint and Productivity Loss Cost
  • We cut your HVAC energy through right sized ventilation
  • We reduce worker complaint and litigation cost
  • We support the cost benefits of a green building rating
  • You avoid the productivity loss that poor air brings
Standards & references

Codes & standards we work to

ASHRAE 62.1WHO IAQ GuidelinesISO 16000ACGIH Industrial Ventilation ManualNIOSH IAQ SurveyFactories Act 1948 Indian OELsDGFASLI and NIOH IndiaBIS Noise and Ventilation Standards
When to engage

Triggers that signal the need

A worker complaint or a sick building syndrome clusterA new office or laboratory fit outAn HVAC recommissioningA green building certificationA post pandemic ventilation reviewA periodic indoor air quality revalidation
Industries served

Where Indoor Air Quality and Ventilation Assessment applies

Chemical Manufacturing
ChemicalProcess
Oil & Gas
Oil & GasOffshore
Pharma & Life Sciences
PharmaGMP
Mining & Metals
MiningDust
Power & Energy
PowerUtilities
FMCG & Consumer Goods
FMCGCompliance
What we deliver

Tangible deliverables

  • An indoor air quality survey report with the monitoring data
  • A ventilation effectiveness assessment
  • A local exhaust ventilation inspection record
  • An indoor air quality improvement plan
  • HVAC commissioning recommendations
  • A KPI tracking framework
Get Started

Send us the scope

We will scope Indoor Air Quality and Ventilation Assessment against your site and come back with what it would take. Tell us the site, the consents it holds and what it is measured against.