Circulating air module and circulating air module system

A circulating air module (5) with fresh air intake, which can be introduced into a building wall (1) of an interior space or secured to the building wall (1) of the interior space, or which can be introduced into a ceiling region (83) or secured to a ceiling (83) of an interior space, comprising

• a housing (13) with a front side (15) and an opposing rear side (17), and with a fresh air inlet (39) which is designed such that fresh air (53) can flow into the housing (13), and with an inside air inlet opening (33) and an inside air outlet opening (35),
• a heat exchanger (43) arranged in the housing (13),
• an inside air radial fan (49) arranged in the housing (13) and having an axially arranged air inlet, facing the heat exchanger (43), such that inside air flowing in through the inside air inlet opening (33) as circulating air (55) can be drawn through the heat exchanger (43),
• wherein the heat exchanger (33) is arranged between one of the front and rear side (15, 17) and the inside air radial fan (21), the air inlet of which is facing said side (15, 17), and
• wherein the circulating air module (5) is designed such that the fresh air (53) is supplied to the circulating air (55) in the housing (13) and the circulating air (55) flows out of the inside air outlet opening (35) as supply air (57) along with the added fresh air (53).