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Heat Pump vs. Furnace in San Diego, CA
Data last updated: July 25, 2026
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Cost Comparison for San Diego, CA
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Recommendation for San Diego, CA
Heat pumps are strongly recommended in San Diego, CA. The high cooling demand (900 CDD) and moderate heating needs make heat pumps the most cost-effective option.
Climate Context
| Climate Zone | Mediterranean |
| Average Temperature | 64.0°F |
| Winter Low (typical) | 50°F |
| Summer High (typical) | 80°F |
| Heating Degree Days | 1300 |
| Cooling Degree Days | 900 |
| Median Home Age | 52 years (built ~1974) |
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