What makes me say this?
The oil filter is leaking. He's got a coffee can underneath it catching the spillage. So oil is leaking into a can less than three feet from the furnace. Less than three feet beyond that is a pile of crap that's been here since before we moved in.
Something I realized though; he can never take a legal action against us for anything. Why? Little things. There's no way the front-porch is code. There's one smoke detector in the three-story house, which we provided, but we do have two CO detectors which he provided. I think one of them may pull double duty, leaving us only one smoke detector short to meet code.
Grraaarrrg! If I die in a house fire, I'm killing him. Over and over and over again.