Decentralized Units
Decentralized Units represent a category of compact ventilation systems designed for localized air exchange. This category prominently features small wall-mounted Heat Recovery Units (HRUs), which are engineered to provide continuous, balanced ventilation for single rooms or specific zones within multi-family dwellings, educational facilities, or commercial spaces. The core technical advantage lies in their self-contained operation, often utilizing a high-efficiency ceramic or metallic heat exchanger core to capture outgoing thermal energy and pre-condition the incoming fresh air. Many residential decentralized units employ a cyclical, push-pull operation using a single reversible fan, while others feature dedicated supply and extract fans for continuous flow. These systems dramatically simplify installation, requiring only a core-drilled aperture through an exterior wall rather than complex, extensive ductwork. Decentralized HRUs are a crucial solution for modern, airtight building construction and retrofit projects, preventing the accumulation of indoor pollutants while minimizing the energy penalty of ventilation. They enable precise, demand-controlled ventilation at the point of use, offering occupants independent temperature and air quality management. Their high heat recovery efficiency makes them a highly effective and compliant solution for achieving superior Indoor Air Quality (IAQ) while substantially reducing heating and cooling costs.