Protecting People and Resources
Commercial Thermal Fluids
High Performance Thermal Fluids
Our commercial thermal fluid products are designed for diverse applications across multiple industries, including HVAC, chiller & boiler systems, food & beverage processing, solar heating, energy production and distribution, semiconductor, pharmaceutical, geothermal, railroad, and other industries.
All of our thermal fluid formulations are customizable when ordered in larger quantities.


Douglas ProTech provides a range of thermal fluid solutions to keep systems running with reliable performance.
We combine our product offerings with expert consultation and options for customized formulas, packaging and delivery to ensure customer success. Call us for a consultation if you’re not sure which formulation would be best or if you have an application that needs a custom formulation.
All our thermal fluid formulations are Generally Regarded as Safe (GRAS) and do not contain per- and polyfluoroalkyl substances (PFAS), or “forever chemicals”.
Douglas ProTech Thermal Fluids
COMMERCIAL THERMAL FLUIDS
We offer both our own brand of heat transfer fluids and DOW products as an authorized distributor.
Douglas ProTech Commercial Thermal Fluids
Douglas ProTech’s HTF Pro is a non-toxic formulation with inhibited propylene glycol and corrosion inhibitors, optional leak detection dye, and is NSF Certified for food-grade applications. We also regularly provide custom thermal fluid solutions at different ratios based on specific system needs.