My Furnace will run for about 12 hours no problem then all of a sudden the pilot light will go out , for the past two days its done this.. It stopped at about 5.30 am then last night at about 1.30pm... I will go down and relight it and it will start right up... It blows hot air seems fine...

Any ideas
Thanks alicia

Sounds like your thermocouple in the furnace is on the edge of getting bad, you can replace it yourself or get plumber to do it for you. Home Depot is about $7.00 for the thermocouple.