Effective pipe freeze protection in a commercial building goes beyond freeze protection valves and pipe insulation sleeves. A complete approach includes:
Pipe insulation assessment. Pipes along exterior walls, in unheated mechanical rooms, and above dropped ceilings in unconditioned spaces are most vulnerable. Pipe insulation degrades over time and needs an annual condition check, not just a one-time installation.
Freeze protection valve inspection. Freeze protection valves bleed water as pipe temperature approaches freezing, allowing warmer water to backfill and prevent ice formation. Annual verification that they are functioning and correctly set is part of a standard winter heating start-up.
Thermostat and controls verification. Facilities going dark over extended closures need confirmed thermostat settings and building automation parameters before occupants leave. A&G’s HVAC preventative maintenance program includes controls verification as a standard step in the winter preparation sequence.
Pipe drain planning. Systems scheduled for shutdown during a closure need a documented drain sequence that on-site staff can execute correctly. Improvising a drain procedure during a cold snap is how mistakes happen.