The filter monitor automatically monitors the condition of all three filters and will alert you when replacement (or cleaning in the case of the Pre-Filter) is required. The monitor calculates the filter life based on a combination of operating hour, speed of operation, and the Particle Sensor reading.

Filter Lifespan Table of Summary		Hours of operation	Speed of operation	Particle sensor reading	Hours of operation
	Pre-Filter (stock no.: 006840) • Made of polypropylene material.				Varies between 2-12 months. Periodical cleaning is highly recomended
	HEPA Filter (stock no.: 101078) • Made of enhanced, non-woven melt-blown polypropylene material. • High Efficiency Particulate Arrestor rated. • Surface area measures approximately 29.5 square feet. • ATMOSPHERE has also been scientifically proven to effectively remove 7 classes containing 80 different particle contaminants such as airborne allergens, bacteria, fungal spores, pollen, viruses, minerals including asbestos, and radon decay products.				Varies between 3 months to 5 years
	Odour Filter (stock no.: 101077) • Contains 1900g of activated carbon.				Varies between 4 to 12 months