Heater is not working

Sounds like a bad water thermostat. They are inexpensive and fairly simple to replace.

Is your heater blend door working? Heater core clogged? Antifreeze full? No air in cooling system?

I don't hear the"flop" of the door when I switch to hot on temp

Blend door actuator is broken. Gears are stripped

fan does not on heat or ac

Have you reverse cleaned your heater core? I have fixed more vehicles doing this than I can count with your description. YouTube. It is easy.

Blower is not working

Heather is not working

I changed the thermostat and flushed the heater lines and still does not work so I repeated with another thermostat, same problem.

Did all this same problem

Hey ive had this same issue in my 06 twice now. I seen you said you replaced thermostat and flushed the heatercore. It's very possible its actually the heating element under the passenger side dash. Look under the dash you will you will see a plug with the pigtail piece of the harness. Unplug the clip and remove the 2 screws and that will release the element . It looks like a pumice stone with the leads connected to it. Replace that and you should be good to go. But also because most dodges have electric heat not engine cooled. Anyways hope this fixs your problem as well.

I don't hear the floor when I turn the heater on. Now it only blows cold air. How do I fix that?

Is your coolant full? How many years/miles has thermostat been in car? Fill coolant, replace thermostat. If no heat after that, pressure test system and also backflush heater core to resolve a possible clog. Some manufacturers are very difficult to get all air out after servicing cooling system. 1 air bubble can result in no heat.

The first thing I would have done after verifying coolant was full was to flush the heater core and bleed the system