NISSAN HEATER NOT WORKING

It's 14° Outside. I Let The Car Warm Up And Left For The Laundry Mat. The Heater Never Got Hot, And It Worked Last Night. It's Not...

The A/c Cools And Blows Fine. But When I Turn On The Heat, It Stays Cold.

I Let My Car Warm Up In The Morning For About Fifteen Minutes. There Is Still No Heat Unless I’m Going Down Main Road Fast Enough. The Two...