The Hepa Room air purifiers come with an extended warranty, and is guaranteed to last a long time. The prices may be higher, but the quality is exceptional. I would buy a HEPA type purifier. They seem to have a good reliability all around and are used everywhere.
Many of my clients tend to purchase these models due to their incredible reliability. I’ve seen people get the level of sickness reduced in their household by 40 to 50% by the use of these machines alone. The Blueair 402 Purification system seems to be on of the most reliable products on the market today. I’d advise people to look heavily into this brand.

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