My car wont blow out heat or air

providing your coolant is full cause low coolant will cause no heat
and your temp gauge is normal in the middle then most likely u have a bad blend door actuator usually on the passenger side

Sounds like low flow issue. Flush and clean system, PROPERLY! Buy a flush kit, drain system, blow compressed air through, fill with cleaner/water mix, run for 30 min with heat on, drain system, blow out with compressed air, fill with water, run for 30 min, drain, blow out with compressed air, fill with 60% coolant mix.

Are you talking about the engine cooling system or a problem with your Auto A/C?

sounds like the evap core id freezing up are you leaving it on recuit position to long?

https://www.oreillyauto.com/shop/air-conditioning-16770/blower-motor-resistor-12386/2003/honda/accord

or..

https://www.oreillyauto.com/shop/air-conditioning-16770/blower-motor-relay-11581/2003/honda/accord

if the fan does not increase speed as turned up replace resistor assembly usually in heater housing under dash.if doesn,t nave separate resistor assy.it is the fan switch

there might air in the system so you will have to bleed it or remove the rad cover and let the car run for a bit the should be on in full

The blower motor is under the dash on the passenger say. There may be a trim panel that needs to be removed in order to get at it. Once you can see the bottom of the blower motor start the car, turn the speed selector to high and tap the bottom of the blower motor with a large screwdriver handle. If it starts working replace it. If it still doesn't work check out the link to the how to tip below.

http://www.fixya.com/cars/r6571076-blower_motor_not_work

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

try turning the blower down, if you have the fan on full you will feel cooler air from time to time. as the thermostat only measures the ambient tempreture inside the car when this level is met then it will turn off the heat so it will only blow the air from the car which will feel cooler.
if the car is still cold suspect the tempreture control in the car maybe faulty or the water level in the system maybe low.

check for 12 V and ground at blower motor with the fan switch at high if o.k replace motorand if you12V but no ground replace fan switch .good luck