Preventive maintenance holds up better in commercial refrigeration than in most trades, because the failures are genuinely predictable. JRC runs scheduled maintenance for operators across Hopewell Junction, NY.
A visit covers condenser and evaporator coil cleaning, refrigerant charge verification, electrical connections and contactor condition, defrost operation, door gaskets and closers, drain lines, and temperature logs against setpoint. Those items catch the failures that otherwise arrive on a Saturday night. We will be straight about the limits though. Maintenance reduces breakdowns, it does not eliminate them, and any company promising otherwise is selling you something. It also keeps health inspection temperature records defensible.