Heat recovery ventilator SpiroFlex VENT CLEAR HD3 HE Comfort — horizontal unit, 325 m³/h

SpiroFlex VENT CLEAR HD3 HE Comfort is a horizontal heat recovery ventilator designed to provide balanced supply and exhaust ventilation with a nominal airflow of 325 m³/h. The unit recovers heat from exhausted air and transfers it to incoming fresh air, reducing energy losses and maintaining indoor air quality. Built for residential and small commercial installations, this model is compatible with standard circular ductwork and supports continuous operation to ensure stable ventilation rates.

Advantages

The SpiroFlex VENT CLEAR HD3 HE Comfort offers efficient heat recovery that reduces heating and cooling loads while maintaining balanced airflow. Its horizontal configuration allows flexible placement in ceilings, attics, or technical rooms and facilitates connection to existing duct networks. The unit supports continuous ventilation, contributing to improved indoor air quality by supplying fresh air and exhausting pollutants and moisture. Designed for straightforward maintenance, the ventilator enables access to filters and heat-exchange components without extensive disassembly.

Suitable for

• Private homes and apartments seeking balanced mechanical ventilation
• Small offices, clinics, or commercial premises requiring continuous ventilation
• Retrofit projects where compatibility with standard ductwork is needed
• Spaces where reduced heat losses and energy-efficient ventilation are priorities

Key specifications

• Nominal airflow: 325 m³/h
• Configuration: horizontal mounting
• Heat recovery: counterflow or crossflow heat exchanger (integral to unit design)
• Compatible with standard circular duct systems
• Designed for balanced supply and exhaust ventilation
• Continuous operation capability for stable ventilation rates

How to use

Install the SpiroFlex VENT CLEAR HD3 HE Comfort in a horizontal orientation in a ceiling void, attic, or technical room with sufficient access for duct connections and maintenance. Connect the supply and exhaust ducts according to the building's ventilation layout, ensuring airtight joints and appropriate insulation where ducts pass through unconditioned spaces. Fit appropriate filters and verify airflow directions before commissioning. Adjust fan speeds or control settings as needed to achieve the target ventilation rate of approximately 325 m³/h, and perform an initial test to confirm balanced airflow and proper heat recovery operation.

Usage recommendations

Regularly check and replace filters according to operating conditions to maintain airflow and heat recovery efficiency. Ensure periodic inspection of ductwork and condensation drains, especially in cold climates, and schedule routine service to verify fan performance and heat exchanger condition. When installing in unheated spaces, insulate ducts and the unit housing as needed to prevent heat loss and condensation.