I've owned two versions of the Leaf (30kwh and 40kwh). On both versions, starting the remote heating from the app resulted in the windows steaming up on the inside meaning that the car had to be demisted manually by pressing the a/c or front express demister once you got into the car, so the remote heating was "wasted". This week, I left the heater on the Floor Only setting by mistake before locking the car. In the morning, I started the remote heating and to my surprise, no steamy windows at all. No need for a/c or express demister. So my tip is if your Leaf steams up when you use the remote heating function try leaving the heater set on Floor Only before you lock the car.