Furnace Repair Work

My grandmother is 92 years old and I believe that her furnace is about the same age.  In all seriousness, her furnace is very old.  Something is wrong with it now and instead of purchasing a new one, she insists on getting it repaired.  We need to call someone who specializes in Furnace Repair.  I think that she is attached to the old furnace and that is why she refuses to get rid of it.  I am hoping that it can be fixed for her.  I think that it would break her heart if she was forced to part with it.