Kolpak Vollrath temperature controls Thermostats, timers, thermometers, defrost fan delays all in stock in our online store and ready to ship same day. Keep your perishables at the correct temperature save your refrigeration system from working overtime clean your evaporator coils, fan motors and replace a faulty thermostat or defrost switch. Have questions or can't find the part you need? give us a call 888-289-5911 or email us sales