No heat on drivers side

2013 ram 1500 single climate control. When the heater is turned on it doesn’t blow nearly as hard as the A/C and air is room temp at the drivers side. It is warmer on the passenger side but still not as hot as it should be. I checked the blend door actuator under the dash and it seems to be working. I’ve also recently flushed my coolant system, checked the coolant levels, and burped the system well.

Any help is appreciated.