Originally posted by x.staygold.x
It depends on what kind of furnace you have and what kind of humidifier you have as well.
A high efficiency furnace (+90%) will condense the flu gases to get the most out of the heated air, but a mid efficient will NOT do that. And if you have a flow through humidifier, then it will have a small amount of running water while it is on. A steam humidifier will not, unless it is broken. A tray-type humidifier will NOT have water running through it as well...
exactly right, if there is a condensate drain running out of the furnace, not the humidifier than you've got high efficiency. that hose looks more likely to be from a flow through style humidifier though. to check if the valve is stuck, remove the call for humidity (turn your humidistat all the way down), this should de-energize the solenoid on that controls the valve (to verify this put a screwdriver on top of the solenoid and check for magnetism. if the solenoid is de-energized and there is still water flowing over the humidifier pad then the valve is pooched. remember that on a humidifier can go through as much as 20 gallons of water in a day, on a residential unit, so with these low humidity conditions a decent flow of water can be expected from the drain. hope this helps
Last edited by CRX-R; 12-24-2008 at 03:59 PM.
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