Sounds like the blower resistor is burned out.
Heat can be hot or boiling hot too...
A good hot water tank can heat water to 150 f .This should be limited at the setting knob on the lower element to 120 if you have small children, or 130 if there are adults only.
If the washing machine only uses hot water, you should use the "hot water" setting for washing your clothes.
Temperature says nothing if it is cold or hot. Heat means only hot.
One method of heat transfer that removes heat from hot liquids is convection. This occurs as the hot liquid loses heat to its surrounding environment as cooler particles come into contact with the hot liquid and carry the heat away.
If you have the control panel set to the heat setting, it is only designed to blow out on the floor. If you desire hot air out of the middle, you must set the control panel to vent.
The flap is stuck open that controls when and where the heat goes
The heat comes from Earth's interior, which is always hot.
Many animals hide in burrows or caves in the hot day. Some animal to avoid the heat of the day only come out at night.
What causes heat to only come out of the defrost and vent but not the floor of a 1995 S10 Blazer?
The heat comes from hot rocks deep under the surface of the earth.
It comes from a heat source (lava chamber) that is below the surface of the earth In the chamber: hot rock or magma