This HVAC package unit maintenance checklist helps technicians standardize preventive inspections for rooftop and split package systems. Record customer and site details; capture thermostat mode and settings; verify filters and sizes; assess evaporator coil cleanliness; inspect blower motor and wheel; test capacitors and transformer; check disconnects and circuit boards. Cover electric heating (heat strips, kW readings, sequencers) or gas heating (heat exchanger, gas valve, inducer motor, flame sensor, safety switches). Evaluate the condenser section including compressor operation and sound, pressures, refrigerant levels, defrost controls, contactor, start assist, fan motor and blade, reversing valve, and coil condition. Note pipe insulation, approvals for cleaning or recharge, add photos, and finalize with technician signature and customer communication.
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