Eli5: If I get in a cold car and want the temperature inside to be 71, so I set it for 71 or set it higher until I am uncomfortable?

Question

What is the fastest way to heat the inside of a car or room. Set the heater to desired temperature or initially set it higher than wanted?

In: Engineering

Answer 1

Modern cars’ climate control systems will optimize how to most quickly get your car to 71 degrees if you set it to that temp. They’ll often blast air at higher fan speed and through the feet vents first, then open the upper body ones and drop the fan speed once the temps are reached.