Service Call Platinum Client customer complaint of musty smell believes to be coming from furnace, no bacterial growth visible inside furnace, found damp spots around foundation in crawl space. smell may be coming up from crawl space, no gaps in duct, advised customer should address moisture in crawl space. also spoke to customer about RGF reme Halo to treat bacterial growth and viruses in the house. will also help with odors. quoted pricing. also spoke to customer about whole home dehumidification.