Old Musty House

[Daniel Dollar]

Hi, I've just gotten into real estate investing and finally purchased my first investment property. The problem is, the property had been vacant for at least a couple of months in the summer when we were breaking heat records, and it has a musty old house smell. There's no obvious signs of moisture/leaks and I've run an ozone generator 3 times at 2 hours each straight into the return vent. I've also had zerorez clean the carpets. Carpets were replaced before I bought it and look new. I haven't cleaned the ducts yet but I just had the outdoor AC unit and indoor coil replaced and HVAC guy said he didn't think the ducts is the problem. My question is, if the musty smell were coming from the ducts wouldn't the ozone generator have killed it off? Obviously I don't want to break the bank so I'm looking for a solution that doesn't involve some sort of professional remediation company. Any help would be greatly appreciated. Thanks