Comparing humidification delivery (the amount of moisture that passes
through the device and into the air) is a great place to start.
While many portable humidifiers claim to deliver a set number of gallons
of moisture per day, the truth is they will only deliver as much moisture as
you put in them, and re-filling them with water can be a hassle.
The story is similar with other whole-house humidifiers making claims
about gallons-per-day of moisture delivery. Typically, these claims are made
based on a home¡¯s heating equipment running 100 percent of the time at 120¢ª F.
Since these types of humidifiers only work when equipment is running (and no
equipment runs full-time), they rarely deliver more than 1 gallon of moisture
for every 3 gallons that they claim. Plus, for every 1 gallon of water that is
evaporated, 3 gallons go down the drain.
TrueSTEAM offers the most reliable, efficient levels of moisture because
of its 1:1 humidification delivery rate, regardless of equipment operation.
