Coral reefer
Past President
When using a dual stage temp controller with a chiller that has it's own thermostat you are screwed if the chillers internal thermostat goes out correct? If your controller and chiller don't agree on temp it's no good, do people think having a chiller without on board temp control (just on or off) is better if you use a controller? Basically, if your chiller has thermostat built in, then just buy a single stage ranco, no need for duplicity?