Questions on my Aprilaire model 560 Humidifier

Friday, January 6, 2012 by Aprilaire Team
Consumer question:

I am a new condo owner and I own an AprilAire 560 Humidifier which is installed down in the basement of the condo with my furnace. Recently something went wrong with it and there is a lot of water leaking. I had to turn the water off. I had 2 questions:
a. How do I turn the humidifier off? I want to be sure it is not on when the water is off. This would just waste electricity. I cannot seem to find the switch. Can you email me an old manual for this model?

b. How do I fix a water leak like this? Is it likely I just need to replace a part, or do I need to replace the whole unit? If the whole unit, what dealers do you have near me?
If a part, how do you recommend I get that done?

my daughter has mild asthma and we also have 2 babies so I'd appreciate your getting back to me asap so I can get this done.

ps how old is the 560 model? are parts still even sold for it? I could not tell how old it was.

Aprilaires' response:

Thank you for contacting us with regards to your model 560 Humidifier. This model is off as long as the humidistat's control knob is turned down all the way. It will not call for additional humidity in this position, but there is no other power switch. Manuals can be found at:

Based on the information provided, it's not clear where the leak formed. There are several parts that the water passes through to reach the humidifier, the solenoid valve, feed tube, water distribution tray, water panel, scale control insert and drain line. You could try operating the humidifier with the cover removed to see where the leak is. Replace the appropriate part. We offer many replacement parts through our parts department at You can also find local contractors through our dealer locator in the upper-right hand corner of our website at They can offer parts and repair services.
This unit was manufactured between 1993 and 2001.

Please let us know if you have any further questions.

Comments for Questions on my Aprilaire model 560 Humidifier

Wednesday, January 2, 2013 by steve mach:
I have a 560 Alpineaire humidifier its getting water I cannot get the manuel thermostat to click is a bad thermostat thats preventing it to run . the fan is on. Thanks.
Wednesday, January 15, 2014 by Charles Nelson:
Where is the control knob on the Model 560
Thursday, February 13, 2014 by Nancy:
I have a 560-A Aprilaire Bypass Humidifier.Is it normal for my humidifier water to go on when i have it set at 35% when the outdoor
temp. is + 20? Why does the water not go on when it's -20 and i set the manual humidity control at 15%? Thank You, Nancy

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