The Model 550
bypass humidifier is our economy unit
designed for smaller homes. This unit
utilizes a manual humidifier control that
can be installed in the living area or on
the furnace ductwork. Along with all other
models (except model 448) it is equipped
with a drain to flush minerals from the
system. The model 550 has an evaporative
capacity of 0.50 gallons per hour and can
handle up to 3,000 square feet if the home
is tightly constructed.
The Aprilaire Automatic Humidifier Model 600
takes humidifier innovation to the next
level and performs as good as it looks! It
offers all of the performance benefits of
our other technologically-advanced
computer-equipped automatic humidifiers and
it’s easier than ever to have installed
because it includes a built-in bypass
damper, which means fewer parts to install.
Plus, the damper is conveniently labeled for
summer and winter settings, allowing you to
set it for the entire season with no
guesswork involved. Just set it and let your
humidifier run automatically and it will
deliver up to 50% more humidity, compared to
other competitive units on the market. It
also can be installed in manual mode if
needed. The Model 600 has an evaporative
capacity of 0.70 gallons per hour and is
ideal for a home with up to 4,000 square
feet if it’s tightly constructed. We believe
it’s the best performing bypass humidifier
on the market!
