HVAC and Power Outages: What You Need to Know

Power outages affect HVAC systems. Here is how to handle them safely and protect your equipment.

During a Power Outage

Immediate Steps - Turn thermostat to off position - This prevents surge when power returns - Protects equipment from unstable power

Staying Comfortable **Without Heating:** - Layer clothing - Use blankets - Close off unused rooms - Conserve body heat

**Without Cooling:**

• Stay on lower floors
• Open windows if cooler outside
• Use battery fans if available
• Stay hydrated

Protecting Your Home **Winter:** - Monitor indoor temperature - If extended outage and freezing, drain pipes - Never use outdoor heating devices inside

**Summer:**

• Open refrigerator/freezer minimally
• Protect temperature-sensitive items

Using a Generator

Can You Power HVAC with Generator? - Central systems require large generators - Portable space heaters may work - Window units may work with larger portable generators

Generator Safety - Never run inside or in garage - Position away from windows - Carbon monoxide poisoning is real risk - Use proper extension cords

Professional Standby Generators - Automatically power home during outages - Properly sized for HVAC - Professional installation required - Significant investment

When Power Returns

Restart Procedure 1. Wait 5-10 minutes for stable power 2. Turn thermostat to desired setting 3. Allow system to start normally 4. Monitor for unusual sounds or behavior

Why Wait? - Power may be unstable initially - Compressor needs time before restart - Prevents potential damage

Signs of Power Surge Damage - System does not start - Error codes on thermostat - Tripped breakers - Unusual sounds or smells

After Extended Outages

Inspection Recommended If: - Outage lasted more than several hours - Power fluctuated repeatedly - System behaves differently after

What to Check - Thermostat functioning - Normal startup sounds - Proper heating/cooling output - No error indicators

PG&E Power Shutoffs

Bay Area specific concerns:

• Public Safety Power Shutoffs may occur
• Sign up for alerts
• Have backup plans
• Consider surge protection