R.L. DEPPMANN GLYCOL DIVISION
PREMIUM DOW GLYCOL
Reliable glycol supply for HVAC and hydronic systems, data centers, industrial processes, food-grade applications and more.
DOW MASTER
DISTRIBUTOR
Trusted partner blending premium glycols to your required concentration at our in-house facility. With us, it's always in stock.
UNMATCHED CUSTOMER SERVICE
Nearly 100 years of industry experience, backed by a team that knows glycol. Get expert support to help you get it right the first time.
FAST SHIPPING,
NO MINIMUMS
Fast, reliable fulfillment. Most orders ship in 24 hours. Keep systems protected and jobs on schedule without interuption.
OUR GLYCOL SOLUTIONS
High-quality DOW glycol solutions for a variety of applications.
DOWFROST™ Inhibited Food Grade Propylene Glycol
Heat transfer fluid designed for applications where incidental or indirect food and beverage contact is possible, providing safe, reliable freeze protection and corrosion inhibition.
DOWFROST™ HD
Inhibited Propylene Glycol
Low toxicity heat transfer fluid, trusted in HVAC and snow melt systems for its proven freeze protection, corrosion control, and reliability.
DOWTHERM™ SR-1 Inhibited Ethylene Glycol
Heat transfer fluid for HVAC and process cooling applications, offering maximum freeze protection and corrosion control.
STOCK, BLENDED, & READY TO SHIP
WE STOCK & BLEND IN-HOUSE
We custom blend glycol to your exact concentration requirements at our in-house facility, ensuring your system gets precisely what it needs. With glycol always in stock and most orders shipping within 24 hours, we deliver quality, flexibility, and responsiveness to keep projects moving.
Always in Stock
Custom Blending
Ships in 1-2 Business Days
AVAILABLE CONTAINER SIZES
Get the right quantity of glycol for your project - no minimums required.
5 Gallon Pails
Compact, easy-to-handle container designed for mess-free pouring without pumps or siphons.
55 Gallon Drums
Durable HMWPE plastic drum with thick walls for reliable indoor or outdoor glycol storage.
275 Gallon Totes
Space-efficient IBC tote holds the equivalent of five 55-gallon drums for high-volume storage.
PREMIUM DATA CENTER GLYCOL
DOWFROST™ LC 25
DOWFROST™ LC25 is a purpose-built heat transfer fluid designed to optimize performance and reliability in direct liquid cooling systems.
Long life, no maintenance fluid.
Multi-metal corrosion protection.
Prediluted 25% packaged solution.
Designed for high-density cooling.
NEED OVER 2,500 GALLONS OF GLYCOL?
BULK TANKER OPTIONS
We work directly with contractors, owners, and maintenance teams to coordinate bulk delivery, pumping, and on-site installation.
Glycol Calculators for HVAC Systems
Utilize our glycol calculators to help improve your hydronic HVAC system's performance.
Freezing & Burst Point Calculator
Determine Glycol Concentration for Freezing Point and Burst Point Protection (Plus ethylene and propylene glycol freeze chart.)
Concentration Calculator
Calculate How Much Glycol is Needed to Increase Your System's Glycol Concentration (Correcting or balancing glycol concentration through glycol addition.)
Container Volume Calculator
Use Our Container Calculator to Quickly Determine Container Sizes and Quantities to Order.
NOT ALL GLYCOLS ARE CREATED EQUAL
WHY CHOOSE DOW?
Glycol quality varies, and the fluid you choose directly impacts the performance, reliability, and lifespan of your system. Dow heat transfer fluids are engineered, tested, and trusted to deliver consistent performance so you can protect your equipment, avoid costly maintenance, and keep your system running.
Proven Performance
Engineered to deliver reliable freeze protection, heat transfer efficiency, and long-term stability.
Protect Your Investment
Keep expensive equipment running as designed and minimize unexpected downtime and repair costs.
Consistent Quality
Manufactured to rigorous standards for dependable performance batch after batch.
Reduce Maintenance
A high-quality glycol helps prevent corrosion, scaling, and degradation. This saves time and money over the life of your system.
DO YOU NEED GLYCOL?
Our Customer Service Team can help you find the right glycol, quantity, contain size, and delivery method for your project.