Inhibited heat transfer fluids,
blended to spec.
Sub-Frost blends 100% virgin propylene and ethylene glycol with proprietary inhibitor packages, leak-detection dye, and custom pre-mix concentrations: food-grade, industrial, and aluminum-safe fluids for the systems you can't afford to freeze.
100% virgin glycol, blended to spec
Food-grade, industrial, and aluminum-safe, from pails to bulk tankers.
100%
Virgin glycol, never recycled blends
NSF HT1
Food-grade registered (Reg. 169143)
~15 yr
PGHD design life
ASTM
D1384 · D8039 · D8040 tested
Inhibited glycols for every closed-loop system
From NSF food-grade to all-aluminum and heavy-duty industrial. Find the right fluid for your application, with full specifications and data sheets on every page.
Heavy-Duty Industrial Propylene Glycol
The flagship heavy-duty inhibited propylene glycol for industrial closed-loop heating and cooling.
View spec sheet
NSF Registered HT1 Food-Grade Propylene Glycol
NSF Registered, Category HT1 food-grade propylene glycol for breweries, wineries, and dairies.
View spec sheet
Aluminum-Safe Propylene Glycol
Organic-acid (OAT) propylene glycol that protects aluminum to 350°F, with no phosphates, nitrites, amines, or borates.
View spec sheetInhibited Ethylene Glycol
Dyed-orange inhibited ethylene glycol for industrial HVAC where toxicity is a non-issue.
View spec sheet
From a single pail to bulk tankers
Order the way that fits your operation. Every fluid ships in the package size your system and schedule call for.
- 1-gal bottles (6/case)
- 5-gal pails
- 55-gal drums
- 275-gal totes
- Bulk tanker
Built for your industry
Glycol matched to how your industry actually runs, and people who understand it.
Breweries
Food-grade glycol your auditor will accept.
Wineries
Precise fermentation temperature control, food-grade certified.
HVAC & Hydronic
Spec-compliant glycol for mixed-metal hydronic systems.
Data Centers
Low-conductivity glycol for cold-plate and liquid cooling.
Refrigeration & Dairy
Sticky supply, fluid testing, and recover-and-replace service.
Snowmelt
Hydronic snow-melt glycol that protects the slab and the loop.
Geothermal & Renewables
Earth-loop glycol that meets code, propylene where it's required.
Size it right with the freeze & burst calculator
Find the exact concentration for your lowest expected temperature, convert an existing solution, and get the gallons of concentrate, water, and containers you need.
Open the calculator- ✓ Freeze & burst protection for PG and EG
- ✓ Dilution & blend-to-target solver
- ✓ Container & volume planning
- ✓ Visual freeze-point curve
More than a drum of glycol
The testing, recovery, and supply that keep your system running season after season.
Recover & Replace
Spent-glycol recovery and recycling on the heavy-duty lines, handled responsibly, not dumped.
Free fluid analysis
We test pH, inhibitor level, and contamination, then tell you whether to top up or replace.
Blended to spec
Any pre-mix from 25% to full concentrate, matched to your system and your lowest temperature.
Fast Indiana delivery
Pails to bulk tanker, shipped quickly from our Westfield blending facility.
Get a quote: product, concentration, and freight to your ZIP.
Tell us about your system and we'll get you the right fluid, fast.