Clearing Windows
Hi, hasn't happened to me yet, but then I am relatively new.
The Ec120 I fly has duct guides that when flipped up are against the screen. I assume a combination of that, the fan and the heater control would help clear the screens quickly if mist on the inside.
We had the heating on yesterday as it was cold - only for a minute (at most) at a time, because it was noisy and the cabin warms up quite quickly.
For the excursions I have had recently we have also cleaned & polished the canopy glass before the first flight of the day - not sure that helps except with immediate visibility, but guess it gives her a chance to adjust to the air temp outside the hangar..