Seasonal variations and the influence of ventilation rates on IAQ: A case study of five low-energy London apartments

The indoor air quality (IAQ) of five low-energy London apartments has been assessed through the measurement 16 key pollutants, using continuous and diffusive methods across heating non-heating seasons. This case study approach aimed to assess presence pollutants within better understand role ventilation seasonal variations in quality. results indicate strong variations, driven by increased natural rates over summer monitoring period. A combined metric for outdoor ( I tot ) suggests that IAQ winter = 17.7) is more than twice as bad seen 8.6). Formaldehyde concentrations were lower season, indicating offset off-gassing, contrast findings other studies. However, summertime observed increase proportion entering internal environment. resulted higher NO 2 winter, despite significant reductions concentrations. These demonstrate impact practices upon IAQ, influence occupant actions complex relationship play balancing sources pollution.