Today was cold but not overly so. Last night was bitterly cold. The kind of weather when brass monkeys turn up at garages asking about brass welding while clutching two spherical brass objects! The temperature inside the bus dropped to 18 Fahrenheit or minus 8 centigrade. It didn't seem to bother the 7 gallons of water in my 7 gallon water container though.
It's a very small fridge and I took account of its measurements and the measurements of other similar fridges during the construction phase of the interior of my motorhome. Indeed, I even put an electrical socket there, ready for use. I'm of two minds though. I really like my lack of electrical dependency. Solar panels while providing a laughably small amount of power for a mind boggling cost and ridiculous complexity aren't an option I'll be pursuing. I could put the fridge in and use it or I could just use a cooler. A bag of ice in a cooler should last a week. In terms of cost, the fridge would cost probably 100kwh a month. At current prices, electricity is 13 cents per kilowatt hour. That's $13 a month just to run a miserable little fridge! I can buy 20lbs of ice for $1.50! You can probably see why I'm so skeptical about modern technology.
Running the fridge via a converter would require a battery capable of holding at least 3000 watt hours or in 12v terms about 250AH. Now that's going to be four large, heavy batteries just to run a sodding fridge. It really is not worth the expense, the fuss or the bother. Let's look at costs.... a converter will be about $150. A single battery will be about $100. That's an expenditure of $500 just to run a fridge for a single day. Add in solar, wind or a generator and the costs rack up into thousands just to run a sodding fridge.
Now let's look at coolers. A bag of ice twice a week for a total weekly expense of maybe $10. Over a year that would be $500. Don't forget the fridge could go wrong, the batteries have a 5 year replacement cycle and the converter probably has too. Ice will never go wrong. Coolers are cheap. Then there's heat generation. Coolers produce no heat. Fridges produce a lot of heat. I ask the question... how much heat is it desirable to introduce into an already hot tin can in the summer?
Thus, the fridge lives and works, just like the water heater I removed but are they of practical value? My thought is no. At least though, I know that the fridge works, should I feel the urge to install it though I shall resist all such burgers.