Where's My Global Warming???

My furnace has been running for AT LEAST 3+ hours. I say at least, because it was running when I got home. I had the thermostat set on 71F when I went to work, and when I got home I cranked it up. In the 3+ hours since I did that, the temperature has gone up a measly ONE DEGREE in my house, because my furnace can't keep up with the drop in temperature outside. Tomorrow the wind chill is supposed to be -20F.

I'm cold. My house is cold. My cats are cold.

Global warming, me arse.... :)