Why does my Nest thermostat say in 2+ hours to cool?

Why does my Nest thermostat say in 2 hours to heat?

Nest Thermostat quick fix for no cold air! Try this before you call your HVAC company.

Nest Gen 3 only blows warm air *Fixed* with help from Nest tech.

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How do I recalibrate my Nest thermostat?

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