Heat is coming from the engine.
There is no heater blower is a Honda. The heat created on the air condition system is heated up through a heater core. If there is no heat coming out then the heater core will be the culprit.
no
If there is no heat coming out of the vents, but there is air coming out on a 2003 Mercedes Benz E-320, check the thermostat to make sure it is not sticking. If this is okay, check the heater core. If the heater core is bad, there will be water on the passenger side floorboard.
The cooling fan at the radiator is not coming on. Running the heater take heat out of the coolant as it goes through the heater.
Front heater core is in the dash, the rear heater core is all the way in the back of the vehicle. If you have steam coming out of the dash vents, the front HC is leaking. If you have steam coming out of the rear heater vents, then the rear core is leaking.
If you bypass the heater core the air temperature coming into the vehicle will not be increased ( so no )
one of two things , #1, low on antifreeze or #2 , heater core plugged up.
When the heater is off but heat is still coming out of the vent, it could be due to residual heat from the engine or a problem with the cooling system. This could be a sign of a faulty heater control valve or a malfunctioning blend door. It's best to have a mechanic inspect the vehicle to diagnose and fix the issue.
check and replace if needed the heater core that's one reason why no heat
Your heater core is leaking. This is the part of your car that creates heat for the passenger compartment of your car. There is no fix for a leaking heater core except to replace it.
Sorry bad news Your heater core has a leak