Last summer, I went out on a repair call for an air conditioner that wasn’t cooling. At least that’s the message the dispatcher sent me over the phone. When I arrived at the home the customer seemed a little distant, sort of like her mind was somewhere else. After she told me about the problem she was having we both went to the basement to look at her furnace. As I walked up to it I immediately saw the problem. The insulated Freon line was frozen. A large chunk of ice was right where the Freon line goes into the plenum near the furnace. Unfortunately, this wasn’t her only problem.
Mold in the Humidifier
Once you discover that much ice on the outside of the furnace, you know the coil inside of the plenum is iced up just as bad. I removed the cover to the humidifier so I could see how much ice had accumulated, and to my surprise the humidifier pad was covered with black and green mold. The first words out of my mouth were this pad needs to be changed; there is enough mold here to make someone sick. I wish I had chosen my words more carefully. (more…)