John Krol of Phoenix would like advice on the type of humidification system to add to a forced-air furnace as well as the pros and cons of adding a system, how much it will cost, and recommended ...

I figured if I hooked the relay up to the furnace's blower control, then the humidifier could only add water when the furnace blower is on. The solenoid is 24VAC, so I'm not too worried about killing ...