We had a furnace installed 6 years ago, location is in a basement and there are approx 10 cats living there. The cats lay on the duct work above the furnace and the smell is horrendous. For the past year we have had several issues: Heat exchanger intake box connection rotted on the outside, control board failures, pressure switches etc. Every part that can be changed has been replaced with the exception of the outer cabinet which looks to be 20 years old and not the 6 that it is. The basement has flooded before, cat urine is evident on the ducts near and above the furnace and the tenant refuses to relocate the cats and their litter boxes.
My questions are: Has anyone had any experience with this type of environment? Should we be looking at a harsh environment furnace, what type if any are out there. Are the cats in deed contributing to these issues.