Let me just throw this out there,, I am not naming any specific company or brand,, but being in the business,, these early brands of Thermoelectric coolers were at the center of allot of investigations... vehicle and structure.. NOT POINTING BLAME AT ALL!!
Just personnel observations,, These are NOT meant to replace full time units and consume CONSTANT power (12V), They do as advertised,, but get very hot!!! Some are still in service today if used properly.. But again,,focus has been on a few in the past,, be sure to follow manufactures directions and recommendations!!