Originally Posted by
Guppydriver95
my airplane won’t stay cool in the summer if I did that. Either 2 engines, or one engine with an apu for cooling. Single engine with no apu? Never gonna happen.
That's fair. I don't know about the 737, but on the A320 the FADEC bumps the idle speed of the running engine under bleed demand. I've seen the N1 in the high 20s sometimes. I also need to make a habbit of opening the crossbleed to make sure both packs get bleed air.