APOLLO 100% Propylene Glycol — Professional-Grade Heat Transfer Fluid
Concentrated propylene glycol heat-transfer fluid engineered for hydronic and HVAC systems. Delivers reliable freeze protection, corrosion control, and optimal thermal performance in boilers, chillers, radiant floors, heat pumps, and geothermal systems.
Critical: Use at Exactly 35% Concentration
Target Concentration: 35% This is the optimal balance between freeze protection and heat transfer efficiency.
Below 35%: Risk of freezing in cold climates — system damage may occur.
Above 35%: Reduced heat transfer efficiency — system performance is compromised.
Always verify concentration with a propylene glycol refractometer.
Visual inspection is not sufficient. A calibrated propylene glycol refractometer ensures your system is protected and operating at peak efficiency.
Key Benefits
-
100% concentrated propylene glycol — dilute to exactly 35% for optimal performance
-
Freeze protection — guards hydronic and HVAC piping in cold climates when properly diluted
-
Superior heat-transfer performance — optimized for boilers, chillers, radiant systems, and heat pumps
-
Corrosion & scale protection — safeguards copper, steel, and aluminum system components
-
Non-toxic, low-odor formula — safe for residential and commercial applications
-
Versatile compatibility — suitable for geothermal, hydronic, and HVAC closed-loop systems
Mixing & Application Guide
- Mix with clean water to achieve a 35% propylene glycol concentration by volume
- Use a calibrated propylene glycol refractometer to verify concentration before filling the system
- Do not rely on visual inspection or generic antifreeze testers — use a refractometer specifically rated for propylene glycol
- Check concentration annually or after any system top-up or flush
- Suitable for closed-loop systems only — not for potable water lines
Specifications
-
Fluid Type: 100% concentrated propylene glycol heat-transfer fluid
-
Recommended System Concentration: 35% glycol / 65% water
-
Packaging: 5 Gallons
-
Applications: Hydronic heating, boilers, chillers, radiant floors, heat pumps, geothermal systems
-
Primary Functions: Freeze protection, heat transfer, corrosion control
-
Toxicity: Non-toxic, low-odor
Compatible Systems
APOLLO Propylene Glycol is compatible with virtually any closed-loop hydronic or HVAC system, including:
- Air-to-water heat pumps
- Geothermal heat pump systems
- Boilers & radiant floor heating
- Chillers & fan coil units
- Solar thermal systems
Skip to content
