My outdated ductwork had mold in multiple locales

However, I decided to look at the ductwork after finding no mold on the cooling system itself.

I’ve got to get dire about cleaning this outdated house. I moved into this rental a few months ago because our lease was up on our outdated loft and I struggled to find something of the same quality. The first time I inspected this locale out, I kept noticing that it odored like someone had been burning incense in here just hours before I arrived. That must have been the case. When I got the keys and drove over here alone to start cleaning, it odored horrible inside. It odored like a mix of sewer gas and mold. Thankfully the sewer gas smells were easy to remove. Every sink here has an air admittance valve underneath because of a lack of rooftop air vents for the plumbing system. These air admittance valves cut over prolonged years of use, so simply replacing them is usually all you have to do to get back to normal again. Sadly, the mildew smell wasn’t as easy to address. At first, I couldn’t find any mold outside of the bathroom shower. After I cleaned and sanitized the stone grout, I kept noticing the same smell throughout the house. I went on the hunt for water damage however found none in the most proper locales, like underneath sinks or near the water heating system and air conditioning unit. However, I decided to look at the ductwork after finding no mold on the cooling system itself. Disgustingly, I found mold growing in the metal ductwork behind several of the ceiling vents throughout the house. After the second contaminated vent, I dropped our tools and called an Heating, Ventilation & A/C cleaning corporation. I hope that getting the ductwork professionally cleaned will remove the nasty smells from this outdated house.
a/c workman