The danfoss/secop compressor when mated to the proper evaporator plate with a well ventilated condenser that cannot recycle preheated air, is likely the most efficient fridge on the planet.
My 1.8 cubic foot Vitrifrigo fridge averages 18 amp hours per 24 hours in 75f ambients. It runs less than 20 minutes per hour when contents are already cold. And a six pack placed within is cold in a few hours.
My experience with a Norcold/Engel compressor fridge was less impressive. It used more electricity, and the sawafuji compressor was a buzz saw which vibrated my whole van and caused much stress in trying to quieten it within its enclosure.
That one lasted 5 years running 11 months a year before failure. My year old Danfoss can be recharged if needed. Recharging the Norcold would have cost as much as a new fridge.
