Bay Area summers range from cool and foggy to hot inland heat waves. Prepare your cooling system before you need it.
DIY Preparation
Replace the air filter. Start the season with a clean filter. Have extras on hand for monthly changes during cooling season.
Clean the outdoor unit. Remove debris, trim vegetation, and clear at least two feet around the unit. Gently rinse coils with a garden hose.
Check the condensate drain. Pour water into the drain pan to verify it drains freely. Clear any blockage.
Test the system. Run the AC on a mild day to verify it cools. Check airflow from all vents.
Clear vents and returns. Ensure furniture or objects do not block airflow.
Professional Maintenance
Schedule professional maintenance before peak cooling season. Technicians will: - Check refrigerant levels and charge - Clean evaporator coil - Inspect electrical connections - Test controls and safety devices - Lubricate moving parts - Verify thermostat calibration
Professional maintenance catches problems before they become failures during heat waves.
Consider Upgrades
Spring is a good time for system improvements: - Upgrade thermostat to smart model - Add ceiling fans for air circulation - Seal accessible duct leaks - Add attic insulation if inadequate
Bay Area Microclimate Considerations
Fog belt: Your AC may run rarely. Pre-season testing ensures it works when needed. Run the system monthly even in cool weather to keep components lubricated.
Inland valleys: Prepare for serious heat. Ensure system is fully functional and consider shade structures for outdoor units.
Coastal areas: Humidity management matters as much as cooling. Ensure condensate drainage is clear.
If You Find Problems
If pre-season testing reveals issues, address them promptly. Summer is HVAC companies' busy season with longer wait times. Spring service calls typically have shorter waits and more flexible scheduling.
Do not wait until the first heat wave to discover your AC does not work.
Emergency Planning
Despite preparation, systems can fail. Have a backup plan: - Know how to find 24/7 emergency service - Have portable fans available - Identify cooling centers in your area - Know safe heat precautions
Preparation reduces emergency likelihood and helps you respond if problems occur.