The performance of this fridge can be marginally improved (5~10 degree delta) by adding low wattage box type 12v fans to the interior (Fridge_A & Fridge_B) and exterior (Fridge_C & Fridge_D). In the upper right corner of Fridge_A you can see where three SPDT (single pole double throw) rocker switches have been added to the control panel. The fans can be turned off, run continuously or switched into an automatic mode via a series connection with the thermal switch at the rear of the fridge. The fan in Fridge_D is inline with the air intake pipe, the one that's hidden behind the wires and exhaust pipe. In the continuous operation mode this fan is useful when initially lighting the fridge on propane. It alleviates the need to 'prime the system' by running it on ac or dc for an hour or two prior to lighting.

 

There is a way to pick up an additional 10~15 degree delta. Fire the unit up on propane. Then toggle the voltage selector switch from GAS to DC. The gas stays on! And the DC heating coil kicks in. In automatic mode the fans will settle in to a longer duty cycle because of the added heat. An alternate solution might be to replace the fridge with an Isotherm CR49ASU.