A 2000 Square Foot Home Needs 3.5 to 4 Tons for Ideal Operating Costs
https://precision-bonded-hvac.iamarrows.com/compressor-replacement-exposes-homeowners-to-escalating-repair-liability-beyond-initial-cost
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