Fan won't come on to blow heat in furnace?

Once the furnace gets the signal from the thermostat, I hear the Furnace start up....but the blower does not kick in. It does work most of the time, however occasionally the furnace just runs and runs and does not blow heat. Only way I can fix this, is by turning off the switch on the furnace and...

I have an older luxaire furnace maybe 10 plus years, the fan turns on sometimes it will blow heat but most times it comes on blows cold air and stays on for a while most of the time we have to turn the switch to off to shut off the blower, when watching the flame through the window on the furnace...

We just bought a new home and the heat has never worked well. When the heat goes off the fan continues to run and blows freezing air which lowers the temperature back down several degrees. They have come out several times and said there is nothing wrong and this is normal. The second time they...

This morning our heater came on at appointed time but the fan never came on even when we switched it from auto to on setting. We have a 8 yr old split system, (2 stories) & its worked fine until today. Is there anyone that can give us a few likely scenarios to try & fix ourselves before we have to...