Easiest way to fix the problem is to flush your heater core with distilled water. If this does not work you will have to take it in to have the actuator door on the driver side replaced which will cost you around $150. More times than not it is fixed by the flushing.
my 2000 Chevy venture van the air comes hot by drivers vet and cool by passenger vents
Do you have dual control thermostats?
Check your settings...the passenger and drive have TWO different temperature settings.
Well, the air conditioning system draws the heat out of the passenger cabin, transfers the heat to the refrigerant, superheats the refrigerant, then rapidly transfers the heat from the superheated refrigerant to the ambient air which flows through the condenser fins. This removes heat from the refrigerant, causing it to cool rapidly and drastically, and that cool refrigerant returns to the evaporator, where the blower fan blows over the evaporator, blowing the cooled air into the passenger compartment.
The actuator that controls the diverter door needs to be replaced.
Heat travels from warm to cool.
the dual climate control valve is bad This has happened to me in the past when the Freon was getting low. Shorty after this I found out I was completely out of Freon. IGNORE THE SECOND ANSWER. THE DUAL CLIMATE CONTROL VALVE IS BAD OR YOU SIMPLY HAVE THE DRIVERS SIDE ON HEAT.
i set my thermostat to cool, my heat pump start it go to heat but not cool, i think the thermostat. can u help.
Probable broken door inside the dash. Have a mechanic check the ac system for trouble codes.
it will heat up by sunlight hitting it it cools by cool air hitting it
No, the heat pump will also cool the home.
You might also notice that the passenger side air is slightly warmer than the drivers side. Try to flush the heater core, it might be clogged.