Indoor air quality (IAQ) is not just a matter of comfort; it is a compliance, safety, and efficiency issue for UK businesses. Poor air quality has been linked to health problems such as asthma, drowsiness, skin irritation, and respiratory illnesses. For employers, maintaining good IAQ is also a legal responsibility under the Health and Safety at Work etc. Act 1974, the Control of Substances Hazardous to Health (COSHH) Regulations 2002, and the Workplace (Health, Safety and Welfare) Regulations 1992.
At Marlowe Environmental Services, we help organisations across the UK meet these obligations through indoor air quality risk assessments, hygiene testing, and compliance services. By combining technical expertise with practical solutions, we ensure businesses remain safe, efficient, and fully compliant with regulatory standards.
Why indoor air quality risk assessments are essential
Regular IAQ risk assessments provide clarity on the condition of your workplace environment and the performance of your ventilation systems. They protect both employees and organisations in four key ways:
1. Employee Health and Wellbeing
Poor air quality can cause respiratory problems, fatigue, and reduced concentration. Long-term exposure to pollutants increases the risk of serious illness. Regular assessments help employers identify risks and protect staff health.
2. Regulatory Compliance
Risk assessments confirm that workplace air meets UK legal and industry standards. They support compliance with HSE, COSHH, and CIBSE guidance. Documented reports show due diligence during inspections.
3. Operational Efficiency
By prioritising proactive maintenance, we can prevent the premature degradation of hygiene standards, preserving system integrity before performance dips. Consistent monitoring ensures HVAC systems operate at peak reliability, extending the lifecycle of the “clean state” and ensuring your environment stays optimised without the need for reactive repairs.
4. Corporate Responsibility and ESG
Good air quality supports ESG and sustainability commitments. It reduces energy use and environmental impact. Demonstrating care for staff health also strengthens corporate responsibility.
UK regulations and standards on Indoor Air Quality
Employers must comply with several laws and standards to ensure good air quality in the workplace and protect employee health. The Health and Safety at Work etc. Act 1974 requires employers to safeguard the health, safety, and welfare of their employees. The COSHH Regulations 2002 mandate the control of hazardous substances, including airborne contaminants. The Workplace (Health, Safety and Welfare) Regulations 1992 require sufficient ventilation in workplaces.
Standards such as BS 15780 and BESA TR19® provide guidelines for the cleanliness of ventilation systems and ductwork, while the CIBSE Guide A offers recommendations on air quality management. Non-compliance can lead to fines, enforcement actions, reputational damages. Employers must stay informed to ensure air quality remains safe and compliant.
What an Indoor Air Quality risk assessment covers
An Indoor Air Quality (IAQ) Risk Assessment evaluates several factors affecting air quality within a building. It starts by assessing comfort factors like temperature and humidity, and airflow. Maintaining proper temperature and humidity levels prevents discomfort and protects health and building materials.
The assessment also identifies airborne pollutants such as particulate matter (PM2.5 and PM10), bacteria, fungi, and mould spores, which can affect respiratory health and contribute to allergies. Monitoring these pollutants helps prevent illness and maintains a safe environment.
Gaseous contaminants like carbon dioxide (CO₂), carbon monoxide (CO), and volatile organic compounds (VOCs) can also be monitored. CO₂ levels indicate ventilation effectiveness, while CO detection highlights potential combustion risks.
Ventilation system hygiene is checked by inspecting air handling units (AHUs), ductwork, filters, and coils for dust, debris, or microbial growth. Compliance with standards like BS 15780 and BESA Air TR19® is assessed to ensure the system is clean and effective.
How Marlowe Environmental Services Supports IAQ Compliance
At Marlowe Environmental Services, we provide end-to-end air hygiene and compliance services to ensure businesses meet legal obligations while safeguarding staff health. Our solutions cover:
Indoor air quality monitoring and risk assessments
We measure temperature and humidity to check workplace conditions. Airborne particles, bacteria, fungi, and mould spores are monitored alongside gas levels such as CO₂. Results are supported with photographic reports and contaminant classifications, followed by clear cleaning and maintenance recommendations.
Air handling plant and equipment services
We clean and treat air handling units and ductwork to keep systems efficient. Kitchen extract cleaning is carried out in line with BESA TR19®, and BOHS P601-trained consultants inspect and test LEV systems to ensure compliance and safety.
Comprehensive reporting and action planning
Our reports include system performance analysis with photographic evidence for compliance. Action plans cover training, upgrades, and inspection schedules, with ongoing maintenance support to reduce risks and keep systems compliant.
The benefits of partnering with Marlowe Environmental Services
When businesses work with Marlowe Environmental Services, they gain more than a service provider. They gain a compliance partner with expertise across water, air, and environmental safety.
- Safe – protect staff health and meet regulatory requirements.
- Efficient – improve HVAC performance, reduce energy use, and cut waste.
- Compliant – align with UK legislation, British Standards, and CIBSE guidance.
- Integrated – access a one-stop compliance solution through Marlowe Environmental Services, covering water treatment, chemical management, air hygiene, and compliance software.
Take control of your workplace air quality
Indoor air quality directly affects employee health, productivity, and legal compliance. Poor conditions can cause illness, reduce efficiency, and expose businesses to regulatory action. Regular risk assessments, carried out in line with UK standards, are the most reliable way to keep working environments safe and compliant.
Marlowe Environmental Services supports organisations across the UK with specialist air hygiene testing, risk assessments, cleaning, and training. With decades of expertise and a commitment to Safe, Efficient, Compliant solutions, we help businesses meet their obligations while protecting their people.
Reach out to Marlowe Environmental Services today and take the next step towards a safer, healthier, and fully compliant workplace.