Correctly Sizing an HVAC Unit Determines Whether Replacement Becomes Inevitable
https://sacramentoprecisionhvac-local-sac-near-mcdonald-hearing-aid2826.readspirex.com/posts/planned-replacement-schedules-through-maintenance-program-workflow-extend-hvac-lifespan-15-years
For a 2000 square foot house, you typically need a system between 3.5 and 5 tons of cooling capacity, depending on insulation, ductwork, and local climate