KFW70 with gas-solar heating

recoVair from Vaillant. They apparently only have this one model, but I found some things about recoVAIR on the internet, although most people then talk about other product names. On the manufacturer's website, I also only see the device, surely also the technical data, but only about half of it is understandable to me. But how it exactly looks in the house, I can't find anywhere :/

Well, it's not just the device for pipes, which valves? I think you should know that before buying, right?

There are also different versions of the device... and there are prices with a 1000 euro difference... so which one is going to be installed now?

here are pictures:









You can see that you can use very different materials with the same/similar device.

According to the manufacturer’s website, there is only one device. But that seems strange to me as well. That can't be right, can it?

No, that is not correct... there are different versions of the wall unit and also an under-ceiling version

Hello,
for KFW70 ventilation is not necessarily required.

BTW: How much does an automatic ventilation system for a normal single-family house cost approximately?

Best regards Barossi