HoMedics humidifiers
HoMedics has 2 units here, from $80 to $100, across 2 types. The most capable is the HoMedics TotalComfort Deluxe at 0.5 gal/day, enough for 123 sq ft. 2 of the 2 cannot produce white dust.
Across the lineup, HoMedics's published room sizes average 4.4× what the output supports, so treat the square footage on the carton as a ceiling rather than a rating. How that is calculated.
HoMedics
HoMedics TotalComfort Deluxe
A tower with a 1.47-gallon tank, a demineralisation cartridge in the box, and a 426 sq ft claim - an oddly specific number that at least suggests somebody calculated rather than rounded up to 500. Seventy hours on the lowest setting is among the longest here, which as usual means the lowest setting moves very little water: about half a gallon a day. Where it earns its place is the combination of a demineralisation cartridge and a real humidistat at $80, which is not on offer from most rivals at this price.
123 sq ft supported · box says 426 sq ft
Two 3.8-litre tanks rather than one big one, which makes the refill a pair of manageable trips and means you can run it on a single tank overnight. Warm and cool mist, demineralisation cartridges, a humidistat and an eighty-five-hour low-setting claim - the longest number in this catalog, and the one that best illustrates why the number is nearly meaningless. Eighty-five hours from 1.38 gallons is 0.39 gallons a day, roughly a tenth of what the 521 sq ft printed alongside it would require.
96 sq ft supported · box says 521 sq ft