Based on my personal experience, never buy Philips air purifier. I bought a unit in 2008. Within 2 months, one of the LED indicator not functioning, sent for repair and fixed. After 1.5yrs, the unit totally not functioning, sent for repair again since it was still under 2 yrs warranty. After 2 weeks, Philips service center informed they can't repair it and replaced with a brand new unit instead. So, I am more than happy with it (all filters are new). Now, after 2 years of using it, the air purifier broke down again 3 weeks ago. This time no more warranty but I decided to send to service center and willing to pay for the repair cost. Coincidently, another customer before me was sending his air purifier for repair too but I did not ask about his problem. Just 2 days ago, they told me my unit cannot be repaired and will be returned to me instead. I was hoping the RM8xx air purifier should be able to last me 5 years but sadly that's not the case.

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