Bertie_Woo t1_irnqmxf wrote on October 9, 2022 at 5:40 PM

Reply to comment by Bertie_Woo in Your annual reminder that if your apartment has a radiator, don't open and close the valve. This can create condensation in the system causing a knocking sound. Radiators are designed to be used with a series of open windows to balance heat. by emeyer94

In theory I feel like there should be a device that taps the single-pipe for humid air. I suppose that wouldn't fix stuffiness though.

Forced air HRV (Heat Recovery Ventilation) systems could possibly help, but I haven't seen a window mounted version. It would probably be noisy anyways.