Which Type of Heat Transfer Fluid Should I Use?

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 – 250F	N/A	N/A
Heat Transfer-ability	Good	Better	Best	Best
Toxicity	Non Toxic	Toxic	Non Toxic	Toxic
Flammability	Not Flammable	Not Flammable	Flammable	Flammable
Viscous at Low Temperatures?	Yes- larger pumps needed	Yes- better than P.G.	Slight change	Slight change
Susceptibility to Biofouling	Susceptible	Susceptible	Not Susceptible	Not Susceptible
Reserve Alkalinity Maintenance Required	Yes	Yes	No	No
Ships as HazMat	No	Only in bulk	Yes	Yes
Price Point	Highest	Highest	Lower	Lower
Price Stability	Fluctuates w/ crude	Fluctuates w/ crude	More Stable	More Stable