A key outcome of a comprehensive preventive maintenance program for HVAC systems is:

• A. Reduced energy usage
• B. Increased maintenance costs
• C. Operative equipment for delivery of HVAC services
• D. Fewer emergency repairs

Answer: (C)

Preventive maintenance for HVAC keeps equipment in good operating condition so it can perform heating and cooling when needed. The main outcome is that systems remain operative and capable of delivering HVAC services to occupants, because proactive care prevents unexpected failures and ensures components like compressors, fans, coils, and controls function properly. Regular inspections, cleaning, lubrication, filter changes, and calibration support reliable operation and service continuity. While better energy efficiency and fewer emergency repairs can accompany PM, the central objective is maintaining readiness to deliver the required services.