Hi,

I just bought a 2005 Honda Civic dx. 65,000 miles on it. Everything is working properly except my ac and heater. The vents have a continuous flow of hot air even when the heater is off. When i turn the ac on it also blows hot air. What can I check to troubleshoot or replace, please help thanks!!!!

 

Check to see if you have the vent open for outside air to enter the cabin
Check to see if the blend door actuator is working
Check to see if the temperature selector is set for the desired temperature

 

Check your cabin filter and make sure its clean.