wrote in message

If the light uses 15 watts and the fridge uses 5, on average, that's
20x24h
= 480 Wh/day, ie 175 kWh/year if the room were always 40 F or 26x24h = 624
Wh/day if the room were always 70 F. It would be nice to get this down to
100 Wh, like the Mt. Best chest freezer fridge modification.

With better controls, it might only need 5x23h = 120 Wh/day.

Nick


The thermostat unit heats just that tiny portion of the unit to make the
freezer be colder. To warm the entire refrigerator box with a 40W bulb is
wasteful and will warm the contents a bit. Saving energy at the expense of
potential food deterioration or spoilage does not make sense.