Code-Compliant & Custom-Modified: Armstrong GLA Glycol Make-Up Units
September 19, 2025
When a commercial HVAC system relies on glycol to prevent freezing, a reliable method is needed to maintain system pressure. That’s where Armstrong’s GLA Units come in. These automatic fill units are designed to maintain proper pressure in glycol-based systems while preventing contamination, overflow, or system failure. At Maddock, we stock Armstrong GLA units—ready to…
