My heater won't blow hot air. it's just cold. how can i fix this?

 

welcome to the forum. If this has been your car since new, check your heater valve, could be stuck closed. Go to hondaautomotiveparts.com and enter your car information and go to the parts diagram for the heater valve, it will give you the pn and where it is located ( engine compartment close to the firewall )

 

Check your coolant level. If you don't have enough coolant then you won't have heat either. And what year is this Accord? Maybe the doors in the heater box are not moving as they should you may want to check fuses. It could be stuck on A/C side. Just some more things to look into. The heater valve that ACMECH is talking about is a good thing to check as well, but I have never seen one go bad.