If there is mold inside the furnace air ducts then they all may need to be replaced depending on the severity of the mold issue. If all the ducts need to be replaced then the cost for replace of the furnace would increase.
Were there any disclosure from the homeowners?
How old is the sewer line?
How old is the water supply line to the home?
Right of way
water leaks (mold)
You mainly want to look at any big ticket item that may need attention and address it now before you sign the final papers.
The new mold inspector came on Friday. There was no visible mold. He checked all levels of the hosue: basement, 1st floor, and 2nd floor. He mentioned that there was a 20% moisture level in the basement, but that was normal/to be expected.
The homeowner put in a filter and ran the furnace that way for a day, at the mold inspector's request. He took the air samples, and sent them out to a national lab (EPA approved) to be tested. We'll probably hear the results Monday or Tuesday.
The HVAC man came out to look at the furnace. Yes, he mentioned that it was old, and to keep in mind that it is towards the end of its life expectancy. He guessed the furnace was installed in the 80's, and said it was a state-of-the-art furnace in its day.
I spoke with the general house inspector, and mentioned to him my concerns about the mold inspector he had recommended to me. He mentioned that he has used this inspector often, and felt that his results were reliable. But he also told me that if the 2nd opnion mold inspector's results are different, that he would refund me the money for the first inspection. I was pleased with his integrity! And my guess is that if the second opinion results are vastly different, the general home inspector will begin using a different person to do his mold inspections.
As far as other inspections: we had a pest inspection done and a radon inspection done. Both of those turned out fine. I did not have an asbestos or lead inspection done.
I'll let you know about the mold results when I hear about them.