It is difficult trying to understand what you are trying to convey to me. If you live in an older house, this may be the problem. Your furance, refigerator and range hood may all be on the same circuit. Your furance should have a dedicated circuit, nothing else on it. The refigerator should be on a dedicated circuit also, the range hood can be on a circuit with other devices. To find out what is on a curcuit, go to the panel and find the circuit that powers the fridge, have someone watch to see when the light goes off in the fridge, that will be the fridge circuit. Now check and see if anything else is off, eg. if the range hood doesn't work, then it is on the same circuit. If the furance fan will not operate then it is also on the same circuit. Do the same thing with the furance circuit, turn if off at the panel and see what else does not work.
Remember, the furance and the refigerator need to each have their own dedicated circuit.