Incorrect tonnage selection voids manufacturer protection on 2000 square foot homes

https://precisionwarrantyhvac.fotosdefrases.com/staged-pressure-testing-and-electronic-leak-detection-pinpoint-sealed-system-faults-in-sacramento-cooling-units-1

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