Efficiency
Solar Power and HVAC: How They Work Together
6 min read••
Solar and HVAC are often discussed together. Here's how they actually interact and complement each other.
Solar panels and HVAC systems have an interesting relationship, especially as California shifts away from gas.
The Basic Connection
Solar panels produce electricity during the day. Air conditioners and heat pumps use electricity. During sunny days, your solar can power your cooling directly.
Why This Matters
AC and Solar Timing Solar produces most when cooling demand is highest—hot, sunny afternoons. This is a perfect match.
Heat Pump Considerations Heat pumps use electricity year-round. Winter solar production is lower, but so are heat pump electricity demands in our mild climate.
System Sizing Considerations
Solar Sizing with HVAC If you're adding solar and have electric HVAC: - Account for HVAC usage in solar system size - Consider future upgrades (heat pump, EV, etc.) - Maximize production during cooling season
HVAC Sizing with Solar If you have solar, efficient HVAC equipment makes more sense: - Operating costs approach zero when solar covers usage - Higher efficiency equipment maximizes solar self-consumption
Heat Pump vs. Gas Furnace with Solar
The Electrification Angle Solar produces electricity. A gas furnace can't use it directly. Heat pumps can.
**Heat Pump Advantages:** - Uses your solar production - No gas bill - Eligible for additional incentives
**Gas Furnace Considerations:** - Lower operating cost per BTU currently - Doesn't benefit from solar investment - May face future regulation