Could humidifier be contaminated??

Yes, it can pickup all sort of contaminants and breed mold if not cleaned.

Growth in the April-Aire panel is not common since it dries out between cycles. But the symptoms you are having might suggest mold growth *somewhere*. Turn off the humidifier for a couple of days and see if your symptoms lessen. If they *do* lessen, you could have excessive humidity in the house or possibly mold growth in the ductwork or in the A/C coil (if used).

Of course, you could replace the panel too...

Buy a hygrometer so you have some idea what the humidity level is.

Jim

(snip)

Radio Shack has a nifty digital one. Forgot the model #, but I used it a few years back when I had a small DIY humidor made out of a 6-pack cooler with some florist wet foam and propylene glycol at the bottom.

AJS

It COULD be, but very doubtful.

However, I dont install a humidifier, unless a UV lamp goes in as well....just insurance against that sort of thing.

I'd be tempted to call a heating guy out to change the pad again. Or, if you want to be really cheep, take it apart yourself (not dificult). Mix up a bucket with about two ounces of bleach, and the rest warm water. Soak the pad in bleach water for about five minutes, drip dry, and put it all back together. Now, that's cheep!