heater problem

i think my blazer has a problem because whenever i turn my heater on for a while and then i turn it off i still feel heat in the car especially comming from under dash. any suggestions?

You are talking about when you turn off the fan?

Heat blowing or heat radiating?


If heat blowing:

Does it vary with vehicle speed?



If heat radiating:

Your heater core is under the dash, when you turn off the fan the fan stops circulating the hot air, but if you leave the temp control knob turned to heat, the hot water will still circulate through the heater core and radiate through the dash.

yes when i turn off the fan.

oh so its the hot water circulating huh ok i thought for some reason the heater would still be on.
thanks fort the helguys.

It may not just be the water circulating through the dash. Check to see if you can feel it blowing from under the dash with the fan off while driving. And if it varies with vehicle speed.

You will still have some warm air coming from the heater core even with the fan off.

Completely normal.