I'm not sure why Infiniti restricted the ability to turn off the A/C when switching to recirculated air. Maybe they felt that the cabins collected moisture too quickly without it. Like in the other cars I've had, I would have preferred that Infiniti had given us the option to turn the A/C off in that mode. Choices man, it's all about having choices

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In the wintertime, it's actually not that bad. I do feel a slight dip in the temperature, but it's not that drastic. But when it comes to defrosting the windshield first thing in the morning, ideally I would want to run it in recirculate mode with the A/C off. I still don't see it as a huge issue, as the EX warms up more quickly than our other vehicle.