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mechanical extract ventilation, air handling units, air fi lters, air purifi ers and other air quality technologies. Correctly selected systems can also help prevent condensation and mould growth by managing humidity levels. For specifi ers and building owners, the challenge is to balance health, energy performance and practical operation. While passive ventilation techniques such as opening windows can provide useful purge ventilation, they are not always reliable or appropriate – outdoor pollution, noise, weather, security, and occupant behaviour can all limit their eff ectiveness. Mechanical ventilation and fi ltration provide a more consistent means of controlling airfl ow and reducing pollutants. Eff ective ventilation can also help buildings act as a protective barrier against some outdoor pollutants. A well-designed building envelope, combined with appropriate fi ltration and air distribution, can reduce the amount of particulate matter entering occupied spaces while still supplying the fresh air needed for good IAQ.
Why does independently verifi ed data matter? Ventilation products are selected based on performance data. However, even the best-designed and installed systems will underperform if real-world performance does not match manufacturer claims. If the product data is incorrect, it can lead to serious
problems, including: ■ Oversized systems: which waste energy and create excessive noise.
■Undersized systems: which fail to provide adequate ventilation, leading to stale air and humidity issues.
■Regulatory non-compliance: underperforming systems may fall foul of minimum regulatory requirements (air exchange rates, energy performance, etc.)
■Duct sizing errors: if calculations are based on incorrect fan capacity or static pressure data, it may result in uneven airfl ow and poor distribution.
■Higher energy consumption: also leading to a higher carbon footprint and higher ongoing running costs.
■Inadequate fresh air supply: causing discomfort and poor IAQ.
■Humidity control issues: leading to excessive dryness or moisture problems, increasing the risk of mould and structural damage.
■Buildup of harmful pollutants: If ventilation rates are incorrect, pollutants such as particulate matter, volatile organic compounds (VOCs), biological contaminants and carbon monoxide may be trapped within the building envelope.
■ Poorly designed extract ventilation: Poor exhaust design due to incorrect fan capacity can lead to backdrafting (pulling harmful gases back into living spaces).
■ Risk of system issues: Motors and fans may run at improper speeds, causing overheating, excessive noise, and performance loss. Plus, incorrect specifi cations may lead to premature wear and tear, as systems must work harder to achieve the required level of ventilation. This may result in more frequent maintenance or early system failure.
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Independently verifi ed data gives specifi ers, system designers, installers and homeowners greater confi dence that the selected system will perform as expected in the intended application.
How to identify high-performing products A key strategy is to choose products whose declared performance has been independently and comprehensively assessed by an impartial third party. The next step is to compare performance like-for-like with other models to ensure the best balance between IAQ and energy performance is achieved. This is where Eurovent Certifi cation steps in to off er: ■Independently verifi ed product performance data ■Proven energy effi ciency ■ A Certifi ed Product Directory, allowing direct product comparison across diff erent models and brands
■ Plus, certifi ed products enter a surveillance process to ensure the data declared by manufacturers continues to match certifi ed data.
Key Eurovent Certifi ed Performance programmes for ventilation systems include: Air handling units (AHUs), hygienic AHUs, residential ventilation systems, air fi lters, air ducts, AHU fans, air purifi ers, as well as individual programmes for plate, rotary, and twin-coil heat exchangers.
Final thoughts Better IAQ is not only about health in homes. Research has also linked higher-quality indoor environments to improved cognitive performance, reinforcing the business case for good ventilation in workplaces, schools, and other occupied spaces. For the UK market, the message is clear: as buildings become more effi cient, ventilation must be designed, selected, installed and maintained with equal care. Prioritising certifi ed ventilation products with proven performance and energy effi ciency helps turn IAQ ambitions into real-life performance, supporting healthier indoor environments and more sustainable building operation.
www.eurovent-certifi
cation.com
m.nudd@eurovent-certifi
cation.com
'People
spend much of their time indoors, where pollutants can come
from cooking, combustion appliances, cleaning products, furnishings, building materials, moisture, mould and outdoor air entering the building.'
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