First you have to see if your blower motor is working or not. If it is and still you have no heat then your heater-core is blocked and needs to be replaced.
The heater in your car uses waste heat from the engine to heat the car. When the engine is not running there is no heat to distribute.
It shields the rest of the car from the heat of the exhaust or radiator .
A car engine is a heat engine, but there are various types of heat engines outside the realm of car and truck engines.
Car not blowing air or heat
The heat will also work when the car is turned on, but not moving. It uses heat from the engine.
heat It transfers engine heat from the coolant to the air inside the car.
Its convection.
Car heaters need a few moments to warm up.
the way the heat enter a car is sort of like a green house. when sunlight is traveling through glass some of the sun heat enter and some reflect back. the heats bulits up and heats up your car. If your car was black or a dark color it will obsorb the sun heat so if you were to touch the car it will most likely burn your finger. the heat will come out of your car if you were to open it.
The Car Coach - 2011 Heat Trapped in Hot Car was released on: USA: 21 July 2011
heat engine and car
The Engine