Preventive maintenance (PM) is scheduled maintenance performed at regular intervals to prevent equipment failure, property deterioration, or service disruption. PM programs generate predictable recurring revenue and reduce emergency calls. For field service businesses, PM contracts are among the most profitable service types because they are planned, efficient, and build long-term customer relationships.
An HVAC contractor offers a preventive maintenance plan where technicians visit twice a year — once in spring to service the AC and once in fall to service the furnace — catching problems before they become emergency repair calls.
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