The Air 70 is a decentral heat recovery ventilation appliance (HRV).
The appliance is very easily installed in an exterior wall, in habi-
table rooms it is installed directly on the wall. The ventilation air
is supplied and discharged straight through the exterior wall. No
ducts system required.
There is a choice of grilles in various colours for the façade. The
compact appliance hood on the inside of the wall is of a slim,
unobtrusive design. You can paint the Air 70 in any colour you
desire, in accordance with the instructions. That makes the Air 70
fit in any interior.
Silent and low-energy
With its sophisticated technology, the Air 70 is the most silent
decentral ventilation appliance. On top of that, the energy
consumption of the appliance is very low. The fresh supply air is
guided through the built-in tube heat exchanger where it is pre-
heated by the stale and warm air that is exhausted from the space.
That results in adequate ventilation with hardly any heat losses.
Small size, great power
The Air 70 is the most compact decentral ventilation appliance
on the market. Its ventilation capacity is high: up to 70 m3/h, while
the diameter of the duct in the exterior wall is still very small (Ø
250 mm). Moreover, the appliance fully complies with the Euro-
pean regulations (EN 13141-8 2015).
In summer, the appliance uses the cooler night air. No need to
open a window, the 100% bypass will be activated automatically.
That makes the home more comfortable and it keeps out the
noise, but the vermin as well.
The thermal efficiency will not be affected by low outdoor tem-
peratures. The built-in preheater prevents the heat exchanger
from freezing and ensures that the airflow through the Air 70 is
A standard, the appliance is controlled with two touch buttons.
The five LEDs display the various settings and messages.
There are two versions: the Air 70 and the Air 70 Plus. The Air 70
Plus version has additional connection options for a CO2 sensor,
humidity sensor, eBus, Modbus, wireless control, RJ for the 4-way
switch and LED lighting.
Flow rate [m³/h] 15-70 (15, 25, 40, 55, 70)
Diameter tube [mm] 250
Wall [mm] 500-600 (300-500)*
Efficiency acc. to EN-13141-8 2015 > 80%
SFP (Watt/m³/h) <=0.25
* with accessory