Earth-loop glycol that meets code, propylene where it's required.
Geothermal earth loops, solar thermal, biomass, and heat-pump systems often require propylene glycol by code for environmental safety. We blend it to the exact concentration your design temperature needs, fairly priced, correctly sized, and ready in bulk.
Talk to a SpecialistWhat you're up against
- PG is often legally required for ground-source earth loops
- Long buried loops make inhibitor longevity and correct concentration critical
- Budgets are tight, and over-dosing glycol wastes money and hurts heat transfer
Earth loops, solar thermal, and heat-pump systems usually call for propylene glycol by code. Sub-Frost blends PGHD to the exact concentration your design temperature requires, with no over-dosing and no wasted budget, plus bulk and tote pricing that keeps your project on track.
The spec
PGHD is a code-friendly inhibited propylene glycol with a ~15-year design life, blended to the exact concentration your earth-loop design temperature calls for. PGAL covers all-aluminum heat-pump and solar loops. Bulk and tote volumes keep cost-per-gallon down.