I did NOT build my IV but it has coolant run through two small radiators - each with a small fan on them - under the panel. Here in Phoenix it's the most useless thing on the plane. But I did try it out last December just to confirm it worked and there were no leaks. With 15 years in the Minneapolis area the last 33 here in Phoenix has been nice but this last summer has been trying - AND it's not over yet. 100 degrees today. I could take some pictures of the installation if you would like. But I do agree that with all the air leaks in a IV the heater fan and warm air are mostly for the mind.

Bill U.