
Acthys
Low-pressure ventilation systems for the renovation of multi-family housing built before 1982.

Acthys, the specialist in renovation ventilation for pre-1982 multi-family housing.
For four decades, Acthys has been leading the way in developing solutions for renovating building ventilation, specifically targeting multi-family housing built before 1982, equipped with individual or collective shunt or Alsace-type natural draft ventilation, or flue ducts.
Our mission is to meet our customers' needs in their low-pressure renovation projects, guided by four principles: innovation, trust, respect, and sharing.
Our Matrys and Helys hybrid mechanical ventilation solutions are specifically designed to address the need for effectively renovating existing ventilation systems
Our mission is to meet our customers' needs in their low-pressure renovation projects, guided by four principles: innovation, trust, respect, and sharing.
Our Matrys and Helys hybrid mechanical ventilation solutions are specifically designed to address the need for effectively renovating existing ventilation systems
Acthys solutions
01
MATRYS U box
MATRYS U box
A major component of low-pressure mechanical ventilation, the MATRYS U extract unit creates a negative pressure in the ventilation network, and varies it according to the detected need for air renewal.
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02
HELYS Premium H800 fan
HELYS Premium H800 fan
A major component of hybrid ventilation, the HELYS Premium assistance fan ensures optimum air renewal all year round.
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03
H315 HELYS fan
H315 HELYS fan
An essential component of hybrid natural ventilation, the HELYS assistance fan maintains the desired air flow rates all year round in a system operating on natural draft.
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04
GHN² extract grille
GHN² extract grille
Humidity-sensitive extract grille specially designed for natural and hybrid ventilation.
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05
GBP extract grille
GBP extract grille
Specially designed for low-pressure mechanical ventilation.
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06
G2H extract grille
G2H extract grille
Peak flow extraction grille optimized for hybrid ventilation.
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Made in France

Ventilation solutions

20 years of expertise

Renovation

The industrial expertise of Aldes and Aereco
