Traditional walk-in cooler refrigeration systems sell for $2,500 plus installation (which can be another $2,000 with electrical setup). Traditional systems use a “brute-force” approach to cooling: lots of coolant (which is bad for the environment), a big motor, a large surface area, and multiple fans (which can dry out your vegetables and account for up to 60% of the cost of operating electricity).
CoolBot Walk-In Cooler Temperature Controller
Out of stock
DIY Walk-In Cooler Temperature Controller
From the manufacture: