Outdoor PM2.5 in central Leeds exceeds the WHO guideline. NO₂ remains elevated along the M621 and inner ring road. The city's distinctive back-to-back housing typology produces high air-change-rate variability and persistent damp risk where retrofits outpace ventilation.
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Leeds' air-quality context
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Building-type risks
Back-to-backs and Victorian terraces. Limited cross-ventilation, post-retrofit airtightness and condensation risk. Humidity & health →
City-centre offices. New-build sealed envelopes where AHU control quality and filter spec dominate IAQ outcomes. Office air quality →
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What to do
Specify ePM1 50% (MERV 13) filtration, commission ventilation against BS EN 16798-1 Category II, and add continuous PM2.5, CO₂ and humidity monitoring. IAQ monitoring →
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Services across Leeds & West Yorkshire
IAQ testing, mould and VOC investigation, ventilation assessment and monitoring across Leeds, Bradford, Wakefield and the wider West Yorkshire region. Reports against WHO, BS EN 16798-1, WELL and BREEAM frameworks.