Johnson Controls Refrigerator Thermostat
External overriding thermostat with analog control and preset differential.
Lager year round with this external overriding thermostat. It installs on a fridge or freezer to maintain optimal fermentation temperature--trying to lager in a fridge without an external overriding thermostat results in temperatures that are too cold for yeast or even in frozen beer. Plug the appliance of your choice into the thermostat, then plug the thermostat into a standard 120V outlet. An analog dial lets you set the setpoint temperature between 30 and 80°F, with 1 degree increments. The Johnson Control thermostat has a 3 1/2 degree differential, which means that the thermostat will shut the fridge or freezer off (stop cooling) at 3 1/2 deg below the setpoint and start the unit (resume cooling) once internal air temperature exceeds the setpoint--the effect of this fluctuation on the actual temperature of fermeting wort or beer will be insignificant.
Customer ReviewsWrite a review
Easy to use works great.
Holds set temp to within 4 degrees F.
Works just like the product details say it will. I'm very pleased!
Well designed & built. Easy to use. Bought it to convert freezer to a fermenting bio for probiotics that need to be kept 60-70 degrees. Keeps the temp consistently at 63 degrees which is perfect for my needs.Inventor & builders are to be commended as well as Northern Brewer for selling such a high quality product.
I bought this to convert an upright freezer into a modern day root cellar for my probiotics to ferment in. Probiotics ferment best between 60-70 degrees. I set it at 60 and it works perfectly. Super easy to install. Temperature gauge is easy to set and change. The quality of the engineering and manufacturing is outstanding. First rate quality. Mr. Johnson & Northern Brewer are to be commended.