Blog
2026-10-29
Water vs. Oil Mold Temperature Controllers: How to Choose for Injection Molding
Should your mold temperature controller use water or oil? It comes down to the operating mold temperature your resin demands. Water units transfer heat faster, shorten cycle times, and keep shop floors clean, with pressurized closed-loop circuits pushing that efficiency up to 180°C (356°F). Thermal oil takes over once processing requires 200°C (392°F) or higher. Choosing the wrong medium leads to premature heater burnout, excessive cycle delays, or contaminated parts. The breakdown below details where each medium excels and how to identify the exact threshold for your tooling.