Lots of people in cottage country use propane fridges if you're off the grid. They work as well as a conventional fridge. No idea if they use ammonia or what. 

Jeff 

Sent from my iPhone

> On Jun 28, 2015, at 11:36 AM, David Beierl <dbeierl@ATTGLOBAL.NET> wrote:
> 
> At 11:52 AM 6/28/2015, Rocket J Squirrel wrote:
>> It's been running in the upper 30s (C) hereabouts for the past few days
>> and into the foreseeable future. I would not want my household
>> refrigerator to be ammonia-based. Esp. since we do not have
>> air-conditioning in our house.
> 
> I can't say how it would have worked in that weather, but the
> household-type gas fridge that I grew up with at my grandparents'
> camp in New Hampshire kept ice cream perfectly well.  To a kid it was
> no different from the electric one at home, except quieter.  If the
> grownups gave it any special treatment I wasn't aware of it.
> 
> Yrs,
> d