There are heater doors on the heat blower box that direct the path of the heat. Apparently the heater door to the floor vents is stuck closed.
The most likely cause would be a vacuum leak at the rear of the engine or a defective selector switch.
The flap that directs sir to the selected vents is jammed or broken...or the switch that controls it is.
Either you have a blockage present or your vents on your sewer lines have become blocked or you need to install more vents.
Heating vents should be located near the floor since hot air rises. If the heating vents are located near the ceiling the heat would stay there and not warm the room.
Heat and steam coming from the dash and air vents after replacing the water pump means that a hose is hooked up backwards in the new installation. The heater is actually taking on water when it is supposed to only take on hot air.
Warm(er) air rises - if vents were high up there would be little circulation without fans.
some thing is probley cloging the vents take it appart and ckeck.
It should blow through the floor vents. Modern vehicles generally use movable baffles in there HVAC systems, to direct air flow where the controls indicate. If the controls allow airflow to the floor, but nothing flows out, there is a malfunction between the control switch and the actuator that directs the flow.
Inexpensive floor vents are easy to find and buy. Depending on the material, the price can vary. Buying direct from the maker would be the cheapest way so as to avoid overhead costs and price mark-ups.
Any of the following can cause this......... 1. Bad a/c - heater controller.. 2. Bad a/c - heater controller inside door operation.. 3. Bad, broken or cracked vacuum line/lines..
If we are talking rain water not engine coolant I would suspect the drains under the cowl are plugged up with debris (leaves and such). If it is engine coolant then I would suspect the heater core is leaking.
Heating vents should be placed on or near the floor because heat rises. In rising, it will warm the air of the room. If the heating vent were near the ceiling, the room would stay chilly, even though heat was being poured into it.
Low coolant level? Thermostat opening too soon? Plugged or restricted heater core? Water pump not circulating coolant? System airbound?
vacuum leak the vacuum reservoir is below the left head light, check the hoses
It could be the heater core leaking.
Most likely cause would be the floor has a moisture problem or the floor was not level when it was installed. There is always a chance if it is fairly new that it is defective.
Because you have a vacuum leak in the system or your vacuum canister is leaking. When you accelerate the vacuum from the engine will drop. That will cause your system to loose vacuum and the floor/defrost door will go to its neutral position. To keep the vacuum up you have a canister that will hold vacuum. It must be air tight.
Heater core is leaking. Air Conditioner drain hose is plugged.
This is a very common problem and you need to check for a vacuum leak, broken vacuum line or a loose vacuum line......
Bad heater core.
The motor which blows air through the vents.