At full power, it uses 32W. At minimum power, 6.5W. Maintenance: vacuum the front of the main filter (black) once every 2 weeks. Filters last 2 years.
- It seems to be on its way out. Panasonic's Singapore and Malaysia websites have no air purifier section, although the model shows up on their website on Google searches. I had a hard time finding the manual online, and finally found it on the Hong Kong website.
- Has dust sensor, and can automatically control its power according to amount of dust.
- Sensor sensitivity can be adjusted
- Quite quiet and uses little power
- Long filter life
- No HEPA
- Filter frame is made of cardboard, I read this may lead to poor sealing and air bypassing the filter, but looking at the dust accumulated this doesn't seem to be a problem.
- I'm afraid I'll drop something into the vent on top and it'll destroy the fan. I hope the fan isn't directly beneath the vent. All the other air purifiers I've seen also have the vent on the top.
Sharp's air purifiers using Plasmacluster are quite famous. I found Plasmacluster works by splitting water molecules into H+ and OH- ions, which deactivate viruses and bacteria. According to Panasonic, "a nanoe is a fine (5 to 20 nm) and weakly acidic water particle with a reactive substance and an electric charge", "nanoe comes from condensed moisture in the air". I wonder if they're similar?
If I were to get another air purifier, I'd look for:
- HEPA filtration
- UV disinfection (I trust it more than nanoe)