Incorrect tonnage selection voids manufacturer protection on 2000 square foot homes

https://precision-hvac-evaluation-sac.almoheet-travel.com/extended-hvac-service-calls-expose-aging-systems-to-failure-risk-and-mounting-repair-costs

For a 2000 square foot home in Sacramento, you typically need a 3.5 to 4 ton unit, but sizing incorrectly creates void risk that leaves you exposed to uncovered repair costs