No. I was using one of each. Because they were both running the same fluid (HC-50), I could switch between them (with a little effort to keep them balanced).
It still meant a slug of hot or cold into the other system, but allowed (for instance) me to chill the receiver until after all my solvent was through the biomass, then switch to heating it for recovery.
a more capable chiller and heater would have made the strategy more effective.