Which Type of Heat Transfer Fluid Should I Use?

September 10, 2019

CORECHEM carries four types of inhibited Heat Transfer Fluids: a Propylene Glycol-based fluid, an Ethylene Glycol-based fluid, an Ethanol-based fluid, and a Methanol-based fluid. Use this convenient reference chart to determine which type of Heat Transfer Fluid is most appropriate for your needs. Note: Due to product evaporation, our Ethanol and Methanol-based fluids are most commonly used in closed-loop geothermal systems. View our Heat Transfer Fluids here.

Characteristic Propylene Glycol (GlycoChill ‘P’ series) Ethylene Glycol (GlycoChill ‘E’ series) Ethanol (ExoEndosol series)Methanol (GeoChill ‘M’ series)
Operational Temperature Range -50F – 325F -60F – 250FN/AN/A
Heat Transfer-ability Good BetterBestBest
Toxicity Non Toxic ToxicNon ToxicToxic
Flammability Not Flammable Not FlammableFlammableFlammable
Viscous at Low Temperatures? Yes- larger pumps needed Yes- better than P.G.Slight changeSlight change
Susceptibility to Biofouling Susceptible SusceptibleNot SusceptibleNot Susceptible
Reserve Alkalinity Maintenance Required Yes YesNoNo
Ships as HazMat No Only in bulkYesYes
Price Point Highest HigherLowerLowest
Price Stability Fluctuates w/ crude Fluctuates w/ crudeMore StableMore Stable