
Indoor Air Quality Assessment
As part of our air hygiene services, H2O Hygiene provides Indoor Air Quality Risk Assessments that identify possible pollutants in your commercial premises, followed by recommended remedial action to ensure full compliance, comfort and safety. Breathe easy with the help of H2O Hygiene, here to assess and improve your indoor air quality.
- On-site monitoring and sampling
- Indoor Air Quality Assessment tailored for your business
- Professional solutions from a qualified and supportive team
Book Your Free Consultation Now.
Certifications & Accreditations
Our Indoor Air Quality Assessment Process
-
01. 1. Initial ConsultationBy consulting with you, we’ll get an understanding of your premises and will build a complete picture of your HVAC systems and any other equipment that is a potential source of poor indoor air quality. From there, we perform a site survey and create a tailored Indoor Air Quality Assessment checklist.
-
02. 2. On-Site Monitoring and SamplingOur highly qualified engineers will visit your site to carry out an inspection or clean and test, based on our initial consultation. Using advanced equipment, we calibrate air monitoring instruments to record pollutant levels and ventilation performance. We then assess pollutants including carbon dioxide (CO2), carbon monoxide (CO) and other Volatile Organic Compounds (VOCs), to ensure they are at safe and compliant levels. We perform sampling in key areas and across all systems, as well as monitoring humidity.
-
03. 3. Data Analysis and BenchmarkingPoor indoor air quality can be caused by several factors. Our experts identify the root causes, whether it’s blocked filters, inadequate ventilation or external pollution sources. Our years of expertise and fine-tuned processes help us to identify trends and patterns in your premises that lead to poor air quality. All results are compared to the standards set by HSE guidelines, Workplace Exposure Limits (WELs) and World Health Organisation (WHO) thresholds.
-
04. 4. Reporting and RecommendationsFollowing testing, sampling and data analysis, we write up a full report for your records and run through any analysis or testing results. This may also include recommendations for remedial action on any issues we identify. This can include solutions such as an improved maintenance plan for ventilation systems, upgrades and practical steps to take. All reports are clear, detail all test results and show photo evidence, making them ideal for compliance evidence during internal audits and HSE inspections.
-
05. 5. Creation of An Action Plan and SupportWe create bespoke action plans that outline short and long-term improvements to create a safer and more comfortable indoor environment. We work in partnership with our clients to deliver tailored maintenance plans, guiding your staff with training on air quality or providing ongoing Indoor Air Quality Risk Assessments.






What is an Indoor Air Quality Assessment?
An indoor air quality (IAQ) assessment is performed to establish which pollutants are present in an indoor space and how they might affect health and well-being.
Our engineers will gather air samples to assess occupational exposure to harmful air pollutants and VOCs, analyse the performance and condition of building ventilation systems, assess compliance with building regulations and identify the potential cause of any issues reported.
Indoor air quality can be affected by several factors, including ventilation systems such as ductwork and extraction units, the building’s infrastructure, working conditions and temperature and humidity.
During the assessment, testing for pollutants such as CO2, CO, NO2, Particulate Matter (PM) and a range of VOCs is carried out to identify safe levels. The assessment is crucial to ensure that adverse health effects from exposure to poor indoor air quality are mitigated.
Why Choose H2O Hygiene?
Partnering with H2O Hygiene for Indoor Air Quality Risk Assessment services is the smart way to stay compliant and keep your people safe. As part of our nationwide air hygiene services, our Indoor Air Quality Assessments are performed by a team that truly cares. We put customer service at the forefront of everything we do, with our team arriving on time, ready to get to work and support you in any way we can.
Our detailed reports set you on the right track to have indoor conditions that are healthy, comfortable and compliant, as we’ll outline any issues we find with recommendations for remedial work that are sustainable and cost-effective. Our fully trained and certified team will be by your side throughout the entire process.
H2O Hygiene isn’t just here to help you in the short-term; we’re here to provide an Indoor Air Quality Assessment checklist that helps you keep your premises safe and compliant for the long-term.
For water hygiene services you can depend on, trust H2O Hygiene.Protect Your People & Property
Get a tailored Legionella Risk Assessment with clear reporting and no hidden costs.
Key Benefits of Indoor Air Quality Assessments
1. Protect Health and Wellbeing
Whether occupants in your building are in perfect health or suffer from conditions that are severely affected by air pollutants, an assessment will identify risks that can cause harm to your people. Different pollutants and VOCs can trigger allergies and asthma attacks, as well as cause several health effects, like irritation of the eyes, headaches and fatigue. We help keep your premises in a stable condition to ensure everyone can work in safe conditions.2. Ensure Legal and Regulatory Compliance
An Indoor Air Quality Assessment can help you meet your obligations under COSHH Regulations and HSE requirements. Data collected over decades has outlined that exposure to indoor air pollutants could have greater significance on human health than outdoor air. The assessment can help to keep your business and property legally compliant with building certification schemes.3. Improve Productivity
Ensuring your indoor air quality is clean and safe is a sure bet to improve performance amongst your workforce. Benefit from fewer sick days and reduced staff turnover. Employees will have a boost in concentration and performance, and they’ll know they can come into work without the worry of allergies or other health conditions being triggered.4. Optimise Ventilation and Building Performance
We detect underperforming HVAC systems, blocked filters, ventilation gaps and other systems that could be causing poor indoor air quality. Optimising your systems ensures safer working conditions, healthier environments and can extend the lifespan of your systems. This can reduce costs for your business.5. Enhance Reputation and Corporate Responsibility
Having the reports and data to showcase safe air quality in your premises demonstrates to governing bodies and inspectors that your business has a positive track record and supports ESG (Environmental, Social, and Governance) standards and sustainability initiatives with measurable improvements.6. Actionable Insights and Peace of Mind
Professional air quality assessments and testing from H2O Hygiene give you data you can rely on. Each assessment comes with tailored recommendations and clear steps to improve indoor air quality, and our qualified team are on hand for any guidance you require. Indoor Air Quality Risk Assessments give you peace of mind and ensure any early warning signs of risks are dealt with as soon as possible.Got a Question?
Frequently Asked Questions
Poor indoor air quality can affect your team’s health, comfort and productivity. It may lead to headaches, fatigue, respiratory irritation or longer-term health issues. Maintaining clean air supports wellbeing, reduces absenteeism and helps businesses meet health and safety standards.
An Indoor Air Quality Risk Assessment measures levels of pollutants such as carbon dioxide (CO2), carbon monoxide (CO), volatile organic compounds (VOCs), particulate matter, and humidity and temperature. The type of VOCs and pollutants measured can be determined by the indoor environment and systems in place. It helps identify ventilation or contamination issues that may impact occupants’ health.
In alignment with Building Regulations Approved Document F, which mandates that ventilation must be capable of limiting indoor pollutants to protect health, it is industry best practice to conduct an Indoor Air Quality Assessment at least annually, or more often if there are complaints, new ventilation systems or significant changes in occupancy. Regular monitoring, testing and sampling as part of the assessment helps ensure compliance with HSE guidance, COSHH regulations, building standards and maintains a healthy environment.
Typically, a standard Indoor Air Quality Assessment takes between 2-4 hours, depending on the number of monitoring points. We perform a site survey after consultation to identify the scale of the assessment, outlining factors such as building size, layout and number of monitoring points required.
H2O Hygiene prioritises each of our clients’ needs and will conduct our assessments to make sure your business can run as normal. Our equipment is placed discreetly, and testing can be performed during normal working hours with minimal disruption.
If our reports find any issues, we will recommend corrective actions such as improved ventilation, filter changes or source control. Follow-up testing can confirm improvements once remedial measures are in place. Rest assured, if we do find any issues, we know exactly what to do to fix them.
UK employers must provide a safe working environment under the Health and Safety at Work Act 1974. Regular air quality assessments demonstrate compliance with HSE guidance on ventilation and workplace welfare.
Assessments are recommended for new and existing buildings of all types, including commercial, retail, education and healthcare, or any indoor space where people spend extended periods. They are particularly useful for employers, landlords and facilities managers responsible for occupant health and safety.
Our Reviews
What Our Clients Say







