Unfortunately I can't find the HCM350 anywhere for a reasonable price. I was eyeing it because it seems like a great evaporative humidifier and I'd like to test one. It's sold out on Amazon, except for a few that are going for double Amazon's price ($130 instead of $65). I don't think there is a new successor to the HCM350 but it's hard to tell.

I'll have to check out the other evaporative humidifiers on wirecutter. The Vornado EV100 looks good, though the tank only holds a gallon and it only outputs a gallon a day. Turns out the EV200 exists and holds 1.5 gallons, but is also sold out on Amazon. Shopping for these things is... frustrating.

How long have you had your HCM350?