The apartment had been laying empty for 3 years, so while it looked clean, it smelled stale and funky.
The people I was with and I knew going in that after so long it would need a lot of little things done to it, and a few big things savor replacing the carpets.
The people I was with and I got all the work done within a couple weeks, and made large strides before moving in. That first night I noticed that something was still a bit musty in the aged house. My wife had some problems with dust irritations, as well, so I knew the two of us had missed something. The culprit was the old, dirty air duct method in the locale, which had never been cleaned before, apparently. I removed 1 of the air vents in the kitchen, and stuck a flashlight inside to look around. I was stunned, because never before did I assume just how filthy and dirty the inside of an air duct could get! It looked savor someone had opened up a full vacuum bag and emptied it out inside the air duct. Correction, I mean it looked savor someone had opened up a hundred vacuum bags inside that air duct! Even if the two of us could reach in there to sweep it out, the two of us knew that all of the air ducts were this filthy and the two of us couldn’t scrub them all. She had to call a local HVAC tech and request a full cleaning. It took just a few hours, and when she was done the tech told us that she had never seen air duct this filthy before… just savor me!