Some furnace-mounted humidifier questions:
* Are there any recommendations among the major brands (AprilAire, GeneralAire and Honeywell, if I am not mistaken) or are they more or less equal?
* Where can I get those in the Toronto area?
* If I connect a flow-through unit to a hot water source, can I put a filter in between? The water here is quite hard.
* What about steam humidifiers? How do they react to hard water?
Thank you in advance,