SpiroFlex Rekuperator pionowy VENT CLEAR VD4 ERV Ultimate — vertical heat-recovery ventilator, 450 m³/h

The SpiroFlex Rekuperator pionowy VENT CLEAR VD4 ERV Ultimate is a vertical heat-recovery ventilator with a rated airflow of 450 m³/h designed for continuous balanced ventilation. The unit uses an energy recovery ventilator (ERV) core that transfers both sensible heat and a portion of moisture between incoming and outgoing air streams to improve indoor air quality and reduce heating and cooling loads. Its vertical configuration makes it suitable for installations where floor space is limited or where ducting is arranged in vertical risers, and it is intended for use in residential and light commercial environments requiring controlled ventilation and energy efficiency.

Advantages

This ventilator provides continuous balanced ventilation with energy recovery, helping to maintain comfortable indoor temperatures while reducing energy consumption for heating and cooling. The ERV core conserves indoor humidity when appropriate, which can improve comfort and reduce the load on humidification or dehumidification systems. The unit’s rated capacity of 450 m³/h supports efficient air exchange in medium-sized spaces, and the vertical design allows flexible placement in shafts or service rooms. Materials and airflow design are selected to support reliable operation and steady performance over time.

Suitable for

• Residential apartments and houses requiring mechanical balanced ventilation
• Small to medium commercial spaces such as offices, clinics, or retail premises
• Installations with limited floor footprint or vertical duct risers
• Renovation projects where energy recovery and humidity transfer are desirable

Key specifications

• Nominal airflow: 450 m³/h
• Energy recovery type: ERV core for sensible heat and partial moisture transfer
• Orientation: vertical unit suitable for shaft or riser installation
• Application: continuous balanced ventilation for residential and light commercial use
• Effect on HVAC load: reduces heating and cooling demand through heat recovery

How to use

Install the SpiroFlex VENT CLEAR VD4 ERV Ultimate in a vertical position according to local ventilation and building codes, ensuring correct connection of supply and exhaust ducts and proper sealing to prevent bypass air. Connect the unit to appropriate controls and power supply as specified by an HVAC professional. Set airflow rates and control strategies to match the occupancy and building ventilation requirements; regular inspection of filters and the ERV core is recommended to maintain performance. Commission the system after installation to verify balanced airflow, correct heat recovery operation, and absence of air leaks.

Usage recommendations

Maintain filters and the ERV core according to the manufacturer's maintenance schedule, commonly involving periodic cleaning or replacement of filters and inspection of the core for fouling. Use the unit in conjunction with an appropriate control strategy (timers, demand-controlled ventilation, or integration with building management systems) to optimize energy savings and indoor air quality. When installing in humid climates, ensure condensate and drainage provisions are in place and verify that the ERV core is suitable for local moisture conditions.