NEWS O A
Ventilation survey reveals impact of poor indoor air quality
ne of the UK’s leading ventilation manufacturers, EnviroVent, has revealed the startling results of its national survey* to mark Clean Air Day (19th June), which demonstrated that a staggering 66% of people had experienced mould in their homes. At a time when awareness of the importance of indoor air quality is heightened and Government legislation to protect people from the
impact of poor indoor air quality, Awaab’s Law, is due to be implemented in October 2025, EnviroVent has called these findings ‘extremely worrying’. The study of 200 householders revealed that 29% of people were asthma/allergy sufferers, with 16 per cent of people stating that they felt poor indoor air quality negatively impacted their health. This includes allergies, asthma, chest infections and coughs, whilst eleven per cent of those surveyed said they had trouble breathing at home. The survey also found that 59% of those surveyed had taken steps to improve their home’s indoor air quality and 92% of people believed indoor air quality to be very important or fairly important. Ruth MacEachern, Product Manager at EnviroVent, explains: “The results of the survey
are extremely concerning, as a high proportion of households are still suffering the effects of poor indoor air quality. Condensation and mould are symptoms of a home that has high humidity levels and lacks proper ventilation. However, mould is more than just an eyesore, it’s a potentially dangerous fungus that releases airborne spores that are an irritant and can exacerbate asthma and other respiratory conditions.”
Ruth adds: “Good ventilation in the home is essential for maintaining a healthy and comfortable living environment, lowering humidity levels, offering longer term benefits over and above other options like dehumidifiers. Mechanical ventilation systems are becoming
more popular in the home as they help to reduce condensation and mould growth and work autonomously in the background.” EnviroVent provides a range of ventilation products, which introduce fresh filtered air into the home and remove stale, moist area or a combination of both.
Built environment urged to advocate for healthy indoor environments
s the UK marked Clean Air Day on 19th June 2025, Caerphilly- based ventilation solutions specialist Nuaire called on specifiers, consultants, and contractors to put indoor air quality (IAQ) at the heart of building design and performance. Clean Air Day is the UK’s largest campaign dedicated to raising awareness of air pollution and its impacts on health and the environment. Organised by the charity Global Action Plan, this year’s theme encourages individuals and organisations to take practical steps to reduce pollution and protect public health, both inside and outside buildings. Activities range from educational sessions in schools and workplaces to community-wide initiatives that promote greener, cleaner living and working practices. While the national conversation often focuses on outdoor emissions, Nuaire is taking the opportunity on Clean Air Day to emphasise that clean air doesn’t stop at the front door. With the average person in the UK spending around 90% of their time indoors, the air we breathe inside homes, offices, schools, hospitals and other environments is just as critical to our wellbeing as the air outside. “Indoor air pollutants are an invisible challenge,” said Meirion Richards, managing
director at Nuaire. “From carbon dioxide and VOCs [Volatile Organic Compounds] to particulate matter and excess humidity, harmful pollutants can build up, especially in modern well-sealed, energy-efficient buildings. The right ventilation strategy is essential — not only to meet Building Regulations, but to protect occupant health long after the building is handed over.” On Clean Air Day, Nuaire called for a performance-led approach to ventilation, ensuring that systems are not only compliant with Parts F and L of the Building Regulations but are also designed for real-world effectiveness. This includes adopting technologies such as mechanical ventilation with heat recovery (MVHR), demand-controlled ventilation, and
hybrid systems — all tailored to occupancy and usage patterns. Meirion continued: “Developers, architects, M&E consultants, contractors, and building managers all share responsibility for delivering healthy indoor environments. It’s not enough to specify a system; it must be commissioned properly, maintained over time, and designed with IAQ outcomes in mind.” With a legacy of
innovation dating back to 1966, Nuaire offers a comprehensive range of energy-efficient ventilation solutions across the residential, commercial, and industrial sectors. These systems are designed to reduce indoor pollutants, prevent damp and mould, and provide a consistent supply of fresh, filtered air. Clean Air Day serves as a timely reminder that improving air quality is a shared responsibility — and that healthier buildings start with healthier air.
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10/11/23 16:13 BUILDING SERVICES & ENVIRONMENTAL ENGINEER JULY 2025 5
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