IAQ
best solutions, slowing progress toward healthier buildings. A unifi ed, comprehensive approach addressing both new
and existing buildings is essential to clarify standards and drive meaningful change. Retrofi tting older properties with advanced ventilation systems, such as demand-controlled ventilation and sensors for particulate matter and CO2
,
can signifi cantly improve IAQ. While challenging, these upgrades are achievable in many cases and off er substantial benefi ts.
Legislation must ensure IAQ is a mandatory consideration in all building regulations. Without it, newly approved buildings may inherit the same IAQ issues seen in older properties. With 80% of current buildings still in use by 2050, a proactive, regulated framework is essential to prioritise IAQ moving forward.
EPCs
The British Electrotechnical and Allied Manufacturers Association (BEAMA) launched its EPC Reform Position Paper at the BESA event, advocating for Energy Performance Certifi cates (EPCs) to include IAQ metrics focused on healthy buildings. This represents a pivotal opportunity to prioritise IAQ and educate. With 442,000 EPCs lodged on the Energy Performance of Buildings Register (England and Wales) from July to September 2024 alone, such reforms could drive improvements in a signifi cant number of homes annually, incentivising property owners and developers to adopt sustainable practices. A dedicated IAQ certifi cation could further complement
these reforms by providing a clear, standalone assessment of air quality within buildings. This certifi cation would highlight the link between IAQ and energy effi ciency, encouraging developers and property owners to adopt healthier, more sustainable practices. The government’s Warm Homes Plan, which seeks to lift a million households out of fuel poverty, must incorporate IAQ as a key consideration. Energy effi ciency goals should not come at the expense of occupant health. Instead, systems designed to improve IAQ can also reduce operational costs, demonstrating that healthier indoor environments and energy effi ciency are not mutually exclusive but rather mutually benefi cial.
Healthy = effi ciency One of the key fi ndings from the BESA event was the
disconnect between energy effi ciency and IAQ. The drive to reduce energy consumption and increase air tightness has sometimes resulted in sealed buildings with inadequate ventilation, exacerbating IAQ issues. At Carrier, we believe a healthy building is an effi cient building. Prioritising IAQ through smart ventilation systems not only improves occupant health but also enhances overall building performance. Advanced technologies such as particulate matter and CO2
sensors can optimise
ventilation systems, ensuring cost-eff ectiveness and long- term return on investment. Effi cient systems and IAQ are intrinsically connected. Poorly maintained systems, such as those with clogged
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fi lters, increase motor consumption and running costs while reducing air quality. For example, fi lter cleanliness directly aff ects ventilation effi ciency and IAQ; clean fi lters ensure optimal airfl ow and pollutant removal, while dirty fi lters compromise both energy performance and air quality. To further support IAQ improvements, legislation could include thresholds for CO2 example, if CO2
levels and particulate matter. For
exceeds a defi ned level, such as 1,000 ppm (parts per million), systems should automatically increase ventilation output to maintain air quality. Similarly, PM levels should be monitored to ensure they remain within acceptable limits. Ventilation standards should be tailored to building type and usage, ensuring a minimum level of operation based on occupancy and activity to deliver consistent air quality improvements. In recognising the interdependence of IAQ, energy
effi ciency and system performance, reforms could set a new standard for building health and sustainability, fostering better outcomes for occupants and the environment alike. As an industry leader, Carrier Group is committed to supporting this transition with innovative products and services. From comprehensive IAQ assessments to state-of-the-art ventilation systems, we are ready to help developers and property managers create healthier indoor environments. The solutions exist, but their adoption could remain limited without legislative support. The government has a unique opportunity to act, leveraging insights from events like BESA’s and the expertise of organisations like Carrier to implement meaningful change. By equipping developers with a clear legislative framework, we can ensure that the buildings of today and tomorrow are healthier, more effi cient and fi t for purpose in 2050 and beyond.
Clear
legislation would have a broad positive impact, providing much-needed guidance amidst the vast array of available options
and helping developers make
informed choices.
www.acr-news.com • April 2025 19
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