Heat recovery unit SpiroFlex Rekuperator VENT CLEAR HD3 HR Comfort 350 m3/h

The SpiroFlex Rekuperator VENT CLEAR HD3 HR Comfort 350 m3/h is a horizontal heat recovery ventilation unit designed to provide continuous balanced airflow while recovering thermal energy from exhaust air. Engineered for residential and light commercial spaces, this rekuperator supports improved indoor air quality and reduced heating and cooling loads by transferring heat between outgoing and incoming air streams. The unit is intended for fixed installation in ventilation ducts where a nominal air flow of 350 m³/h is required.

Advantages

The compact horizontal design allows flexible placement in ceilings, attics or mechanical rooms where space is limited. The counterflow heat exchanger maximizes thermal recovery efficiency while maintaining low pressure drop, which helps reduce fan energy consumption. Corrosion-resistant construction and accessible maintenance panels simplify cleaning and service. The unit operates with balanced supply and exhaust flows to maintain neutral indoor pressure and reduce drafts.

Suitable for

• Residential apartments and single-family homes requiring continuous ventilation with heat recovery
• Small offices and light commercial premises seeking energy-efficient ventilation
• Renovation projects where compact horizontal units must fit into existing ductwork

Key specifications

• Nominal air flow: 350 m³/h (balanced supply and exhaust)
• Configuration: horizontal heat recovery unit
• Heat exchanger type: counterflow (plate/core type for heat transfer)
• Application: mechanical supply and exhaust ventilation with heat recovery
• Access: service panels for maintenance and filter replacement

How to use

Install the unit in-line with ductwork following local ventilation standards and manufacturer mounting instructions. Connect the supply and exhaust ducts to the corresponding spigots, ensure correct orientation of the heat exchanger for horizontal airflow, and provide electrical connection to the unit’s fans and controls. Fit recommended air filters before commissioning and adjust fan speeds or built-in controls to achieve the target balanced flow of approximately 350 m³/h. Verify airflow and check for leaks after installation.

Usage recommendations

Regularly inspect and replace filters according to operating conditions; clean the heat exchanger and service panels at least annually. Maintain clear access around the unit for airflow and servicing. Use compatible ductwork and airtight connections to preserve recovery efficiency and prevent cross-contamination between supply and exhaust streams.