I have a 20 year old Lennox G16 that has been, up until now trouble free. Recently I discovered water in the furance room and at once call my HVAC tech. He told me that my drain pan has rusted and needs to be replaced. He further stated that Lennox will not sell me the drain pan alone and that I must in addition replace my coils which are still ok.
These are my questions, is there somewhere I can buy a drain pan that would fit my system or can the pan be welded to prevent it from leaking?