Heat recovery unit with transparent covers and LED-lit interior on Blauberg stand

Photo: Mariusz Młynarczyk / CloudAir.tech

A grey heat recovery ventilation unit is shown with clear top panels edged in red and blue LEDs, revealing two fans and the heat exchanger inside, with round duct spigots at the end. A larger grey unit with filter and fan pictograms stands behind against a blue and wood-effect wall.