The 'fan' on the rower doesn't direct much air at you at all. You will want a fan if not more than one.
I have one of these that I like pretty well:
That plus a large fan at my back is enough generally but I'm also in a <70 degree basement. Doing it at 78 ambient would suck without significant airflow.
Viper GTS
I have one of these that I like pretty well:
CBreeze
Rowing Machine accessories, c breeze, cbreeze, Concept2 accessories, Concept2 accessory, Rowing fan
www.ps-sport.net
That plus a large fan at my back is enough generally but I'm also in a <70 degree basement. Doing it at 78 ambient would suck without significant airflow.
Viper GTS