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Rainy Season HVAC Care: Protecting Your Outdoor Units

Bay Area rainy seasons bring challenges for outdoor HVAC equipment. Learn how to protect your investment.

Mike ChenNovember 27, 20245 min read

How Rain Affects Outdoor Units

Quality HVAC equipment is designed to handle rain. However, extended wet conditions, debris accumulation, and standing water can cause problems.

Proper Unit Placement

Units should be elevated above flood-prone areas and have adequate drainage. If your unit sits in standing water after rain, call for an evaluation.

Debris and Leaf Management

Fall leaves accumulating on or around units restrict airflow and trap moisture. Clear debris regularly during rainy season.

Condensate Drain Issues

Humidity during rainy season increases condensate production. Ensure drains are clear to prevent backups and water damage indoors.

Heat Pump Winter Operation

Heat pumps work harder in cold, wet conditions. Listen for ice buildup on outdoor units and ensure defrost cycles are working properly.

Frequently Asked Questions

Quick answers to common questions

No—covers trap moisture and encourage rust. Units are designed for weather exposure.

Light frost during defrost cycles is normal. Heavy ice buildup indicates a refrigerant, airflow, or defrost control problem—call for service.

Related topics:

rain HVAC protectionoutdoor unit carewinter HVAC

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