As requested, a couple more shots of the "Craftsman" garage fridge. The panel is about 1-1/2 inches thick overall, I needed the depth to make the front look convincing and not too "flat". It is all MDF except for the drawer pulls wich are PVC composite, overlayed with aluminum HVAC tape and then brushed with scotchbrite. I put saw kerfs down each side so that it would slide down into the aluminum frame of the door and the top strip of aluminum caps it off and retains the panel. It's such a hoot in the garage when I tell guys to open up the 2nd drawer and grab me a wrench! I got the great finish by loading the thing up with rattle-can automotive primer, wet sanding it and then shooting it with rattle can red, which I selected by grabbing a bunch of different reds at HD, walking them over to the tool corral and matchng them up against the Husky boxes. I got a pretty good match and since my real tool box is a 4 story stack from Craftsman, Husky and K mart (of all places) I had my choice of reds to choose from.
With respect to the energy efficiency of the new and older fridges, some of the gains have come from improved insulation but you can only go so far with that while trying to maintian standard exterior dimensions and adequate cubic foot capacities. The big gains have been in compressor design. The newer compressors are much more efficient. My kitchen fridge is a new LG and it draws only 3.2 amps!