Abstract: A system for the climate-control of interior spaces of a building includes an exhaust air channel for guiding exhaust air out of at least one interior space, and a heat recovery device designed to obtain thermal energy from the exhaust air. One or more interior spaces have a circulating air module with fresh air intake connected to a fluid circuit of a climate-control device. The circulating air module includes a housing with a fresh air inlet for fresh air to flow into the housing, and inside air inlet and outlet openings; a heat exchanger; an inside air fan for conveying through the exchanger inside air flowing in through the inside air inlet opening as circulating air. Fresh air is supplied to the circulating air in the housing and the circulating air flows out the inside air outlet opening as supply air along with the added fresh air.

Abstract: A circulating air module with fresh air intake which can be introduced into or secured to a building wall of an interior space, includes a housing with a front side facing the interior space and an opposing rear side, a fresh air inlet, an inside air inlet and outlet openings; a heat exchanger; an inside air radial fan having an axially arranged air inlet facing the exchanger, for drawing through the exchanger inside air flowing in through the inside air inlet opening as circulating air; and a fresh air fan supplying fresh air laterally adjacent to the inside air radial fan between the front and rear sides of the housing. The circulating air module is designed such that fresh air is supplied to the circulating air in the housing and the circulating air flows out the inside air outlet opening as supply air along with the added fresh air.

Abstract: A circulating air module with fresh air intake which can be introduced into or secured to an interior space building wall, or into a ceiling region or a ceiling of the space, includes a housing with front and opposing rear sides, a fresh air inlet for fresh air to flow into the housing, and inside air inlet and outlet openings; a heat exchanger; an inside air radial fan having an axially arranged air inlet, facing the exchanger, for drawing through the exchanger inside air flowing in through the inside air inlet opening as circulating air. The exchanger is between the front or rear side and the fan, wherein the air inlet thereof faces this side. Fresh air is supplied to the circulating air in the housing and the circulating air flows out of the inside air outlet opening as supply air along with the added fresh air.