Thanks for the advice everyone. I will be making recommendations for the owner to have the system pressure tested and possibly tested for mold/bacteria.
I'm writing up a mechanical systems condition evaluation and will be reporting on expected service life of all mechanical equipment. Seeing as how ductwork is included in what I consider to be mechanical systems, I want to let the owner know whether or not he'll have to budget to replace the...
I'm having a hard time finding any definitive information regarding the expected service life of typical sheet metal ductwork. I'm looking at a 52 year old commercial building with original ductwork. It's all internal and serving an office environment with heating and cooling. Any clues...
