In an erie twist, like the television show "Lost", I have been forced to push a button every half hour to prevent myself from freezing to death.  Our forced air heater fan stops blowing after about 1/2 hour of normal behavior.  I originally thought that the problem was due to the thermostat, which has also been acting erratically.  So I bought a new one, and the same thing happened.  After 1/2 hour the fan stops blowing I can hear a droning sound coming from the unit.

Because it's Sunday and I don't want to pay the extra fee associated with an emergency call, I have not called a repair person.  So I rise from my couch every half hour to turn the unit off, and then switch the fan on.  After the fan runs for awhile I am able to start the unit up again, and it blows hot air for about 1/2 hour.

I have come to accept my new role...

Update:  On Monday the repair person diagnosed the problem as a clogged Drip leg which he cleaned out.  Our heater is working normally and I am attempting to adapt to my freedom.