While working in the garage yesterday, I noticed that my furnace is cycling on and off *constantly*. I hear the gas jets kick on and they burn for about 15 seconds, then shut off. About 30 seconds later it repeats the process, over and over and over again. Only occasionally did the blower kick on where hot air was pushed through the house.
I don't know a dang thing about furnaces, but this can't be normal functioning of the furnace, can it?
-F