Been using this for over 18 months... so far so goodQuality air cleaner, but there are others on the marketWhat's this?Cleared up the airIt takes a bit of time but it worksLongest Air Filter I've HadSeems to do the jobExcellent and highly recommendedHoneywell HA170E1Great air PurifierReally effective purifier←PreviousNext→ See all 17 answered questions Customers also viewed these itemsPureMate Multiple Technologies True HEPA Air Purifier and Ioniser with UV-C and Odor...61Honeywell Pre-Filter for Honeywell HA170E1 True HEPA Air Purifier13HoMedics HEPA Professional Air Purifier - White223Fellowes Allergy UK Approved AeraMax DX55 Air Purifier with True HEPA Filter201Need customer service? The new Honeywell Bluetooth® Smart True HEPA Allergen Remover is the first air purifier utilizing Bluetooth® technology to track local pollen counts via a free mobile app and auto-adjusts its cleaning levels accordingly. This technology enables automatic air cleaning operation according to allergen levels in a specific zip code.