The gas boiler in a house that I am hoping to sell is totally bankjaxed and as a result the heating is not working. I had a plumber out this morning and he informed me that the whole thing would have to be replaced at a cost of €1500. I am just wondering if I should bother replacing it given the cost involved. I am aware that the surveyor will almost certainly pick this up during the course of the survey but surely this will not cause the entire sale to fall through? The rest of the house is in very good condition.