Hello, My girlfriend has a two year old gas fired forced hot water system vented to the outside. We recently completed masonry repairs and generated a great deal of dust in the basement. The heating system does not work properly, now. Her plumber came this AM and said the whole boiler needs to be taken apart and cleaned. I say only the parts which apply to the gas and heating side; the water and pumps are OK. From memory it's a Weil-McLain, a small unit; it's a saltbox. What would be the expected costs for this operation? Thank you.