UPDATE: Looking for cheap Levoit lv-h132 replacement filters. They are perfect for this purifier and are widely available in two packs for much less than the WBM filter. Universal versions of this filter are available in 7.5" x 2.4" sizes. I love how quiet this WBM air filter is at high speeds. It's almost silent in the lows, but I use it in the highs as I like a bit of white noise while I'm sleeping. It's easy to open the bottom to change the filter, although I couldn't find a replacement. There's a blue LED ring that looks cool and can be turned on or off as a night light, or used at a lower brightness. The filter works well for the office and while I don't have any scientific proof that it works, I don't get a stuffy nose at the end of the day when it filters the office air, there is currently dandelion mist in the air, so without the filter I might don't breathe easily. This WBM filter is a fairly new product so I can't find any replacement filters for it. Luckily these are simple round filters so the same size is probably available in another model. This air purifier is also sold in some big stores that promise a great price. p Change the filter material. When it's time to replace the filter, it's easy to operate. This air purifier sucks in air from below and blows it out upwards. Unfortunately, the air purifier does not resume operation when the power is turned off. This means my ultimate goal of creating a schedule with the Alexa controller plugin won't work.
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