Johnson Controls A11B-1 Thermostat & Controllers Freeze Protection Open-Low 35°F 45°F 20' Capillary

Nu-Calgon’s 4188-05 Freeze Kontr'L Glycol 5-gallon is a quality heat transfer fluid for HVAC systems that require freeze and corrosion protection. It is a propylene glycol-based solution suitable for chillers, hydronic heating systems, closed-loop water systems, and refrigeration coils to prevent freezing in low-temperature conditions. This prevents rust, scale, and corrosion on equipment to safeguard the equipment and extend the durability of pipes and components. The product ensures efficient heat exchange and reduces maintenance expenses. It is a safe choice for protecting most metals and system materials and for protecting HVAC equipment in commercial and industrial system applications.