"On a pris froid avec cette climatisation."

Translation: We caught a cold with that air conditioning.

[coatar]

No article needed before froid in french?

[Trofaste]

Nope! "prendre froid" = "to catch a cold"

[RQZ.Sash]

"we caught a cold with this air conditioner" got wrong, why?

[UBGpGgRa]

On HAS to we not you. What is the rule for this"?

[Trofaste]

"on" is commonly used as a replacement for "nous" (probably because it's easier to conjugate verbs for "on"), hence "we". The other use is equivalent to impersonal "you" or "one" in English, eg. "One/You should not go to sleep too late." = "On ne devrait pas aller dormir trop tard."

[n6zs]

"On" is commonly used as the generic "we", the generic "you", and the generic "they".

[StuartBerg2]

"With" implies the A/C also caught a cold. Dans seems more appropriate.

[LindaMundy1]

In Australia where we use airconditioning a lot, it is usually one word.