The IQAir GC Multigas is an ideal air purifier for small rooms such as bedrooms. Getting rid of nasty smells and smoke are easy for this air purifier. Sufferers of allergies will be suited to this unit as it is excellent at removing allergens. As well as controlling gases, it is good at removing particles with its filter cartridge. The purifier has a pre filter, gas and odor filter and a post filter. The filter cartridges last up to 2 years meaning that the system is affordable. There are six different speed settings allowing you to control the level you need. The purifier housing is made with non-offgasing impact resistant UV stabilized ABS.