I arrived home from work today to a warm house.

I looked outside and the tube/pipe from the big loud fan thing was iced up completely. That pipe leads to the inside blowing unit in my house. The pipe was frozen the whole way. I let it de-ice for a few hours then kicked it back on. It wasn't 10 minutes before the whole pipe was frozen back.

What does this mean? And how much is this going to cost?

*sigh*