Dear all,

We have a sophisticated two piping HVAC system in our office building, gas heating with the chiller and air treatment unit on the roof.
This is a pretty expensive even if I go back to a single piping system so in this case I have the idée to make a conventional system for heating with radiators or convectors.
But I’m looking for an affordable system for the cooling, fresh air and moist air extraction.
I know that there are some airco systems that also include fresh air input with a heat exchanger.
Maybe one of you have a suggestion and sorry if I don’t express myself so well.

regards,

Joop