Ventilation heat recovery unit SpiroFlex Rekuperator pionowy VENT CLEAR VD3 LR Optimum (S)

SpiroFlex Rekuperator pionowy VENT CLEAR VD3 LR Optimum (S) is a vertical heat recovery ventilation unit designed for mechanical supply and exhaust ventilation with heat recovery. The unit maintains balanced air exchange by extracting stale indoor air and supplying fresh outdoor air while transferring thermal energy from the extract stream to the supply stream. Its vertical layout and compact footprint make it suitable for installation in service shafts, utility rooms or small plant spaces in residential and light commercial buildings.

Advantages

The unit recovers heat from exhaust air to reduce heating demand and improve overall energy efficiency. It operates with balanced supply and extract airflow to maintain indoor air quality and humidity control. The vertical configuration allows for flexible placement in confined spaces and simplifies duct routing. The design supports continuous operation with reduced noise and low energy consumption when paired with appropriately sized fans and controls.

Suitable for

• Residential apartments and houses requiring controlled ventilation
• Small offices and commercial premises with limited plant space
• Renovation projects where a compact vertical unit is preferred
• Buildings seeking to improve energy efficiency and indoor air quality

Key specifications

• Configuration: vertical heat recovery ventilation unit
• Function: balanced mechanical supply and exhaust with heat recovery
• Installation location: indoor, in service shafts, utility rooms or dedicated plant cupboards
• Airflow direction: separate supply and extract air streams with heat exchange between them
• Intended use: residential and small commercial spaces
• Acoustic performance: designed for low operational noise when installed correctly
• Energy performance: reduces heating load by transferring heat from exhaust to supply air

How to use

Install the unit vertically according to the manufacturer’s installation instructions, ensuring adequate access for servicing and filter replacement. Connect separate supply and extract ductwork, and provide outdoor air and extract discharge routes following local building regulations. Commission the unit with appropriate fan speeds and controls to match the required ventilation rates for the served rooms. Regularly check and replace filters, inspect the heat exchanger for cleanliness, and verify airflow and controls during periodic maintenance.

Usage recommendations

The unit is best operated with a planned maintenance schedule that includes filter changes and periodic inspection of the heat exchanger and fans. Use appropriate controls and setpoints to balance indoor air quality, energy use, and acoustic comfort. Ensure ductwork and installation follow local codes and the manufacturer's guidelines to achieve optimal heat recovery and long-term reliable operation.