Housekeeping · Seasonal AC care

Check leaves and airflow around an outdoor AC unit

Visually inspect the safe, accessible area around an outdoor unit and leave internal servicing to professionals.

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Outdoor AC units need clear airflow to reject heat. The US Department of Energy advises clearing leaves and debris around split-system outdoor components and calling a qualified professional for more than basic care. Never lean outside a balcony, access a roof or open the electrical housing.

Your try-it-at-home checklist

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First check whether the outdoor unit is safely accessible from ground level. Do not climb or reach beyond balconies or rooftops.
Read the manufacturer's clearances and instructions for stopping the unit and inspecting its exterior.
Look for leaves, litter, pots, panels or covers that may block airflow around the unit.
Stop the equipment as directed, then clear only loose debris around it that is safely reachable. Do not touch the fan, fins, wires or refrigerant tubing.
Avoid storing objects or installing makeshift covers over the unit; keep the specified ventilation space open.
For heavy internal dirt, unusual fan noise or recurring poor performance, request professional service rather than dismantling or pressure washing the unit.

Your try-it-at-home checklist

Further reading

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