Our 2 2017 vehicles do this. Not hard to turn it off, I imagine I could change it somewhere, but I have never used recirculate, why is it the default?

None of my 3 are that way. One of those has automatic climate control… Do your 2 cars have automatic climate control? Mine will seemingly start at recirculate to get maximum cooling then transition to vent once the temp get close to the setting. But only when very hot. Maybe your cars default to r…

I suppose it is automatic climate control, kind of you set a temp but have to push the ac button if you want cooling on the GM, and the Toyota. My 2 thoughts, maybe it increases gas mileage, or owners can be impressed by how quickly the car cools. I have never left it on long enough to see if it tur…

Do they have display screens with menus? May be buried in the options. Year, make, model might be helpful.

2017 Toyota Rave, 2017 Acadia limited. I have not delved into the menus, just curious why recirculate is the new default.

Probably because it’s easier to keep air that’s already in the vehicle cool than to continuously cool off warmer outside air? I could easily be wrong. Last summer while my Corolla was in the shop I rented a 2019 Corolla. Automatic temperature control would only work if I had the air coming through …

[image] Barkydog: just curious why recirculate is the new default. It won’t be that way in December. The A/C control module is selecting recirculate in order to cool the interior to the temperature that you selected. If you set the the temperature to “Low” and not to a reasonable temperature…

I have only had 6 vehicles with A/C. None of them had Automatic climate control, all had outside air as the default setting and some of them would turn off the recirculate setting if you engaged defrost. It was sort of fun to see the big rotary knob on the PT Cruiser move by itself.

Why wouldn’t you want the air conditioner to recirculate the air? That’s how your home’s air conditioning works. It’s more effective and efficient.

@Barkydog - I haven’t seen an automatic climate control that requires turning on the a/c. Are you sure you have it in “auto” mode? I get in lots of cars where they have been switched to manual mode.

Why is recirculate the default for AC

General Discussion

It_s-Me May 4, 2020, 11:56pm 4

I’d have to go look at the wifes car, But

On my Ford I have 2 A/C settings
A/C = Fresh air
MAX A/C = Recirculate and closes a valve in the heater hose

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Why is recirculate the default for AC

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