A 2000 Square Foot Home Needs 3.5 to 4 Tons for Ideal Operating Costs
https://precisiontrainedhvac.wpsuo.com/nonstop-cooling-elevates-static-pressure-beyond-0-5-inches-causing-compressor-strain-and-airflow-loss
For a 2000 square foot house in Sacramento, you typically need a 3.5 to 4 ton HVAC system to balance comfort with operating efficiency