These are the different A/C settings to use for every car drive you do all year round and there's some you're sleeping on
Published on Aug 05, 2026 at 1:20 PM (UTC+4)
by Alessandro Renesis
Last updated on Aug 05, 2026 at 1:20 PM (UTC+4)
Edited by
Mason Jones

Most people turn their A/C on or off but don’t really fiddle with the settings, but this may change your mind.
There are so many things we can do to make the A/C work better.
Including one that makes a huge difference in traffic.
Recirculation vs fresh air
Most drivers leave the same A/C settings on year-round, probably because it’s just easier and faster.
But there are a few things we can do to improve the air quality and regulate the temperature in the cabin.
For example, switching between ‘fresh air’ and ‘recirculation’ can make your cabin cooler, clearer, and more comfortable depending on the situation.
‘Recirculation’ mode reuses the air already inside your car, which means the A/C will cool the cabin faster and reduce outside exhaust and odors.

However, reusing the same air that’s already in the cabin means sooner or later it’ll become stale, which is why using ‘fresh air’ mode can help, because it’ll pull air from outside, which has two main benefits.
First, it prevents foggy windows; and second, it keeps the cabin from feeling stale.
A simple rule to follow
There’s no one-size-fits-all solution as it all depends on different factors.
In general, a simple rule is to use ‘recirculation’ on hot days, in heavy traffic, or when outside air smells bad.
This’ll generally work, at least for a while, and it’ll take time for the air to become stale.
Especially if the car is new.

When the air is cleaner, switching to ‘fresh air’ will improve the air quality in the cabin.
Also, switching to ‘fresh air’ in cooler weather, during highway driving with no traffic, or whenever your windows begin to fog, will help.
If your car has been sitting in the sun, it’d be a great idea to start with ‘fresh air’ for a minute to push the trapped heat out, then switch to ‘recirculation’ again.
Just a few small tweaks to your A/C settings could make every journey more comfortable, whatever the season.
Alessandro is an automotive journalist with 10 years of experience covering supercars, automotive history, emerging vehicle technology, and luxury transportation. He wrote the first article published on SupercarBlondie.com when the website launched in 2022 and has since built a reputation for insightful reporting across the automotive and transportation industries. His expertise is grounded in hands-on experience. Alessandro has driven every Tesla model ever produced, from the original Roadster to the Cybertruck, and regularly covers the latest developments in electric vehicles and automotive innovation. His passion for transportation extends beyond cars, he has even flown a Boeing 787 Dreamliner simulator in Addis Ababa, Ethiopia. His reporting spans everything from classic American muscle cars and rare automotive discoveries to luxury yachts, private aircraft, high-end watches, and cutting-edge vehicle technology. Known for his deep knowledge of automotive history and ability to uncover the stories behind iconic vehicles, Alessandro brings readers a blend of historical context, technical expertise, and first-hand experience.