Incorrect tonnage selection voids manufacturer protection on 2000 square foot homes

https://precision247yearround.capitaljays.com/posts/ductwork-restriction-cuts-air-conditioning-lifespan-by-5-years-through-static-pressure-damage

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