Air purifiers are wonderful things for asthma sufferers.

The Grobag Airfree is maintenance free, COMPLETELY silent and fairly small (26.5cm high), perfect for a child's bedroom. It eliminates 99.99% of airborne allergens to help create a healthier indoor environment.
It is cost effective to run, it uses less power than a 60W bulb, and there are no replacement filters to change.

Grobag Airfree removes......
bacteria,viruses, pollen, dust mite debris, pet dander, tobacco odour, mould and mildew spores, ozone and organic odours

Highly recommended for a better nights sleep!