My heat just stopped blowing hot air... AC works fine

Antifreeze is OK andp car never heated upcar.. normally when I turn the heat on I can hear the antifreeze rush in behind the dashboard but now I Dnt hear that when I turn it on or off..

Check your blower resister it's under glove compartment and don't buy an eBay get mercedes approved I payed $125. mercedes is $250 no Chinese in our cars. It takes less than half hourto change resister also check filters there also in same spot I think.