Also if any knows, I am wondering how heating works on a bus/coach with a rooftop unit. Is their a coolant line from the engine that goes up there to heat in the same way a car would or is there a reverse gear on the compressor so it works like a reverse cycle A/C??? Help appreciated again!Car Heater Questions...?
your a/c will still turn on if you have the nob in read, all the nob does is open a flap from the ac to the heater core, half way lets in half cold half hot if you put it on max ac with it on hot it is true the car will heat up faster because it will recycle hot air, on a bus it is either electric but mostly a coolant line off the engine we have a 80's model buss and it runs off coolantCar Heater Questions...?
Tell your friends they are wrong. either you want heat or cool, can't get both. Some of your more expensive cars do actually switch themselves from hot to cold in order to maintain the temp you set, but not those cars with a RED/BLUE slider bar. The bar opens and closes the gate that allows water from the engine to the heater core, how far you move it decides how much hot water gets thru.
If the A/C switch is ON, this activates the A/C clutch which will engange the compressor when cooling is needed and also will turn on the cooling fan on the radiator.
Above roof units often use a heat pump for heat.
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