Interesting, thanks! I do have an old “dorm room” fridge in the basement so I’ll try the controller route - is there anything specific that I should look for in a controller?
Well you're nearly there! You want one that does both heating and cooling. The "InkBird" controllers work well in my experience. For example, this one. But there are a huge variety of them available for pretty cheap. You just plug the fridg in to the controller and put the sensor inside. It will cycle the fridge on and off to maintain the setting.
Given that normal fridge temps are about 4C, you might get up to 16C just by turning the fridge internal knob. I'd try that first.
Any small fridge coupled with a controller can maintain low temperatures like that. I don't want another fridge though.
A cooler with large quantity of cool water should maintain 16C in a 25C environment for quite a while.
I think those "blue ice" blocks + fan + controller could hold 16C quite accurately with a bit of homebrew.
You can see I've thought about this a little... I still haven't built anything.
Interesting, thanks! I do have an old “dorm room” fridge in the basement so I’ll try the controller route - is there anything specific that I should look for in a controller?
Well you're nearly there! You want one that does both heating and cooling. The "InkBird" controllers work well in my experience. For example, this one. But there are a huge variety of them available for pretty cheap. You just plug the fridg in to the controller and put the sensor inside. It will cycle the fridge on and off to maintain the setting.
Given that normal fridge temps are about 4C, you might get up to 16C just by turning the fridge internal knob. I'd try that first.
Thank you Gary! I’ll try the knob first and then order the controller if that doesn’t work. Appreciate your advice