As temperatures drop, many resort to drying clothes indoors near radiators, believing it to be a safe and effective method. However, research from the Mackintosh Environmental Architecture Research Unit at Glasgow School of Art reveals that this practice can increase indoor humidity by up to 25%, contributing to the growth of dust mites and mold, which thrive in humid conditions. A survey by EnviroVent in the United Kingdom found that 75% of households that dry laundry indoors near heating sources have humidity levels conducive to mold and dust mite proliferation. The increase in humidity not only makes the air feel heavier but also leads to a significant rise in indoor dust, which can aggravate respiratory issues, especially in vulnerable populations like children and the elderly. To mitigate these risks, experts recommend improving ventilation, using dehumidifiers to maintain humidity below 50%, and positioning drying racks away from direct heat sources. Regular cleaning with HEPA filters and washing bedding at high temperatures can further reduce dust mite populations. These small changes can lead to a healthier indoor environment during colder months.