You meant R.H. I guess. It is a matter of outside temperature.
If it is in that range, not bad. I'd install flow through type
with remote humidistat(most convenient location). Mine is side-by-side
with furnace thermostat. Mine is spray type.
Tony(Calgary; similar to Colorado winter weather)
I've been running an (older) Aprilaire 558 for several years in my St. Paul,
MN house, and I'm real happy with it. It's a bypass type humidifier,
installed on the return air duct next to the furnace. Only thing I do to it
is replace the "water panel" element once a year. The water flows through
the pad, flushing the excess minerals and crud down the drain.
Mine also came with an automatic humidistat - it regulates the indoor
humidity based on an outside temperature sensor. More of a set it and
forget it arrangement especilly when the temperature can swing from -15F to
30F in a couple of days.
Have you checked with your heating contractor to see what they recommend?
I also have the April Air with the auto set humidistat, its a feature
that sets the unit apart and is definately worth getting, you set it
once to window condensation and back it off and thats it. Its outdoor
temp probe does the rest. Manual set models can easily over or under
humidify unless you constantly reset and fiddle around. This unit
keeps you at the optimal max setting before condensation occurs.
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