TwinFresh Easy-D RL7-50-17 decentralized heat recovery ventilator

What is VENTS TwinFresh Easy-D RL7-50-17?

VENTS TwinFresh Easy-D RL7-50-17 is a decentralized heat-recovery ventilation SET of two units, designed for installation in two wall openings. It is most commonly used in two adjacent rooms or in two openings of the same room, where a central ducted system is not a practical solution. Both units are connected into a coordinated system and operate via one wall control panel KV1, supplied together with 1 remote control.

In practice, this means you are not buying a single fan, but a kit that enables balanced ventilation of two openings. In automatic mode, the units operate alternately: when one exhausts used air, the other supplies fresh air, then they switch roles. This principle is very useful in renovations and retrofits, where you want heat recovery without extensive ductwork.

Main advantages

• True 2-unit set with alternating operation
  The units operate in opposite phases and alternate roles in a 70-second cycle, giving you continuous, balanced ventilation of two openings without a central duct system.
• Ceramic heat regenerator
  Heat recovery is based on a regenerative ceramic energy storage element that enables heat transfer between supply and exhaust air.
• Antibacterial treatment of the heat exchanger
  The ceramic insert is antibacterial treated, with the treatment effectiveness stated for up to 10 years of operation.
• Shared control via the KV1 panel and remote control
  Both units are controlled from one place, which simplifies everyday use and operating mode adjustment.
• Flexibility with additional filters
  A standard G3 filter is included, and for more demanding protection there is also an upgrade to the F8 filter, suitable when you want better protection against fine particles and allergens.

Operation and control

The system is designed for automatic alternating operation of two units. In one cycle, one unit operates as exhaust while the other acts as supply; after 70 seconds, the roles switch. This means ventilation is continuous and without the feeling of one-sided airflow, which is important for room comfort.

If you want a different mode of use, manual operation is also available. Using the same control panel, you can set the units to constant supply or constant extraction, which is useful for special room requirements. The housing also includes an indicator light for filter maintenance or replacement, making it easier to ensure proper operation.

The closing damper is manual, which means the user closes it by hand when the unit is not operating. The housing is plastic and sound-insulated, and the fan uses a reversible axial motor with DC power supply, ball bearings and built-in thermal protection.

Technical specifications

Energy efficiency

For this model, two different efficiency figures are important. Up to 97% describes the ability of the ceramic material to store and release heat during regeneration. Up to 92% is the certified efficiency of the entire unit and is the figure that makes sense to consider in real room use. That is why the system is designed so that, in addition to ventilation, it also helps reduce heat loss.

Frequently asked questions

Do I need one unit per room, or does the set cover two rooms at once?
This is a set of two units. It is most often installed in two adjacent rooms or in two openings of the same room, with the units together forming a complete system.

How does the alternating operation between the units work?
The units operate in opposite phases and switch roles every 70 seconds. One unit then exhausts air while the other supplies fresh air, after which they switch roles.

Can I control both units separately or only together?
Basic control is via one wall panel KV1, which is intended for the whole pair, together with an additional remote control.

Is it possible to use a different filter?
Yes, in addition to the standard G3 filter, an upgrade to the F8 filter is also available. Please note that F8 reduces the maximum airflow to approximately 40 m3/h.

Conclusion

VENTS TwinFresh Easy-D RL7-50-17 is a well-thought-out solution for anyone who wants heat recovery, alternating operation and easy control from one place in two openings. It is a practical 2-unit set for modern retrofits, where comfort, energy efficiency and easy installation are key.