I have an un heated garage and where I live winter temperatures can go down to -30 C (-22 F). Summer temperatures can get up to 30 C (85 F). I would like to control temperature for fermentation.
If I got a big fridge and a dual channel temp controller. Could I put some kind of heater in the fridge (e.g. a high wattage light bulb) and leave the fridge unplugged in winter to keep beer warm enough.
In summer I could plug the fridge into the temp controller.
I'll bet someone has tried something like this before.
Does it sound like my idea might work? Any advice for improving the plan?