"Air" - maybe???
More seriously, maybe it's the cross designs motif itself??
That's a great point to bring up about the episode title, do you have any further ideas for what it could mean with this interpretation:
Unit 1 is dried with a giant fan after
Bearing in mind that there's actually a cross behind Shinji in the shot of him seeing Misato having sex in EoTV (they had him hold the cross in the EoE shot because Misato's feet are covering the cross in the background, emphasizing its importance), the fans are made significant by their repeated association with the cross. Since Kaworu is Christlike, it makes sense that unit 1 would be fanned down after
It's just Anno's way of depicting people escaping from suffering (it connects to why the post-2nd impact world is trapped in a constant state of heat through summer), and it also adds significance to why Shinji is so disgusted by seeing Misato have sex, since sex is used as a motif throughout Eva (see: episode 20's "do you want to become one with me?" scene) to represent the merging of souls, or individuals dissolving their AT-fields around each other. The cross in Eva signifies suffering, which, according to Eva, is bred by the divisions that people experience from their AT-fields, and Shinji's ultimate decision in EoE
is to embrace suffering and grant souls the potential to restore their AT-fields, becoming human again.