Firstly, I am not a refrigeration engineer but I would like to improve the efficiency of a LEC domestic refrigerator. This is an A rated unit which I have on a Narrowboat and I am trying to cut down on the amount of electricity it uses as it all comes from my battery bank.
I was intending to improve the insulation by adding 25mm of expanded polystyrene to the sides and top of the cabinet. In addition to this I was planning to blow cool air from the boat bilges over the condenser at the back of the unit.
Do you think I would achieve any savings by doing this?

regards Brian on NB Harnser