Heat Transfer Fluids
High-Performance Heat Transfer Fluids for Efficient, Precise, and Consistent Temperature Control Across Critical and Diverse Applications
From industrial processing to automotive systems and HVAC operations, heat transfer fluids play a critical role in maintaining consistent performance, improving energy efficiency, and supporting safe, controlled heating and cooling environments.
Applications
HVAC Systems
Solar Heating
Thermal Energy Storage
Process Cooling and Heating
Refrigeration Warehouse
Computer Cooling Systems
Data Center Cooling
Our Heat Transfer Fluid Products
Inhibited Propylene Glycol
DOWFROST™
DOWFROST™ Heat Transfer Fluid is the only inhibited glycol made with DOW PuraGuard™ Propylene Glycol USP/EP, offering greater than 99.8% purity. Unlike lower-grade alternatives that may contain impurities affecting performance and safety, DOWFROST™ delivers consistent, high-quality protection.
With premium purity and long-lasting, food-safe corrosion inhibitors, it helps extend fluid life, protect equipment, and reduce total cost of ownership.
*concentrate and premixed solutions available
DOWFROST™ HD
DOWFROST™ HD is a heavy-duty propylene glycol heat transfer fluid engineered for demanding industrial systems. Formulated with an enhanced corrosion inhibitor package, it delivers superior protection for system metals, helping extend equipment life and maintain reliable performance under tough operating conditions.
*concentrate and premixed solutions available
DOWFROST™ GEO 20
DOWFROST™ GEO 20 is a ready-to-use propylene glycol heat transfer fluid engineered for reliable performance in geothermal heat pump systems. Its optimized 20% formulation delivers an effective balance of freeze protection and heat transfer efficiency, while lower viscosity supports smoother system operation and reduced energy demand.
Inhibited Ethylene Glycol
DOWTHERM™ SR-1
DOWTHERM™ SR-1 is an inhibited ethylene glycol heat transfer fluid designed for reliable performance across a wide range of industrial and HVAC applications. Its high-quality formulation delivers efficient heat transfer and dependable freeze protection, making it a proven industry standard for closed-loop systems.
*concentrate and premixed solutions available
DOWTHERM™ 4000
DOWTHERM™ 4000 is a high-performance, inhibited ethylene glycol heat transfer fluid designed for thermally demanding applications. Engineered with an advanced inhibitor package, it delivers enhanced thermal stability and corrosion protection—making it ideal for systems operating at higher temperatures.
Dyed and Undyed Solutions Available. Food Grade Dye Available.
The ™ is a trademark of the DOW Chemical Company.
Product Package Sizes
Pails
5-gallons
Drums
15-gallons and 55-gallons
Totes
275-gallons and 330-gallons
Bulk Tankers
1000-5000 gallons
Get A Quick Quote
Same day quotes. 1-2 day shipment on most packages and blends.
Areas We Service
Colonial Chemical Solutions’ heat transfer fluid products are managed from our Richmond, Virginia office which is strategically positioned to support customers across a broad and diverse footprint.
We proudly serve customers throughout the eastern United States, delivering reliable product availability, technical expertise, and responsive service to operations of all sizes. Our reach extends across the eastern half of the United States, a region that represents a significant portion of industry and infrastructure.
Why Colonial Chemical Solutions
Free Annual System Testing
Fast Order Process
Dedicated Glycol Processing Team
Clear Communication
Choosing the right Heat Transfer Fluid involves balancing temperature range, thermal efficiency, safety, and system compatibility. Choosing the right quantity can be another delicate balance. Let us help.