The Thermal Electric Device (TED) that does the heating and cooling can only remove 14 degrees Fahrenheit from ambient temperature. So if it's 80 degrees in the car (or in the seat) your going to get 66 degrees out the climate controlled seat vents. The Heating ventalactuon and Air Conditiong system will have to do some work before the seats start to feel hot or cold.
There is specific duct work though the seats to provide heated and cooled air. The TED in the backrest does not have a 100 percent positive seal o the duct work so one cooled air may be lost. Depending on how large and in charge you are can affect system performance too.
The can add around 144 degrees Fahrenheit to the air. That seems like a lot but when you take 8n consideration at 30 below it will take 30 degrees to get to 0 and then the red only has another 114 degrees in it. We as humans are about 100 degrees. That's not go8mg to feel hot. Add to this the TED is warming and cooling air that has to warm or cool the seat before you fell any affect and you can understand why it takes time to heat or cool.
A heated seat has a wire that gets hot directly under the cushion this will put it's heat directly to the seat cover and to your posterior a lot faster than heating and cooling air will that has to go through a duct that's hot or cold.
