oil pan 4,
I think I found the major source of your heat loss.
It is this strangely shaped object in the photo below:
If this is an appliance, it certainly is a strange looking appliance. It would be a good idea to see if there are any other models of this appliance that are "Energy Star" rated.
If you look at any of your other images, none of them come even close to this one in terms of wasted heat.
In fact, along the bottom edge of the photo you can see what a huge amoint is lost from the appliance plug-in cord alone.
All in all, I can't imagine any way to utilize an appliance as wasteful as this one is.
Good you got your Flir 7... otherwise, you never would have known.
Sincerely,
-AC