Have HVAC Questions? Ask an HVAC Expert for Answers
we are not sure of what he did, but will look for the invoice.
the invoice says only control board changed. also, is any steady humming normal when the furnace is not running. he has gone to check on the transformer. will let you know.
the transformer seemed ok..but it is still humming.
I have to leave for an hr..send me an email with your answer
ok waiting for an answer