- Concentrated|Burst protection to -100°F|Non toxic, Propylene Glycol-based hydronic fluid and anti-freeze|Inhibited for use in hydronic heating, cooling, potable water and closed looped solar systems|Also for non-drainable fire hydrants and sprinkler systems|May be diluted with water|Contains 70% actives.
Harvey™ Heat Antifreeze is for winterizing hydronic heating, cooling, potable water and closed loop solar systems. Contains inhibited propylene glycol which provides unsurpassed rust and metal corrosion protection.