alfadog
Final Approach
The installation manual calls for an avionics fan I believe as an "option", but it would make sense. Considering that it'll rarely be on in my aircraft, I'm not terribly concerned just yet
IDK, once you have it in the airplane, you might find yourself using it for situational awareness on VFR xc flights. Also, if it keeps the unit from failing, it might be a useful addition for when you are in the soup and counting on it