ᐅ CO2 Sensor for Mechanical Ventilation with Heat Recovery

Hello everyone,

We are currently building to KfW40+ standards with a mechanical ventilation system featuring heat recovery. The offer includes the Vitovent 300-W plus a CO2 sensor for an additional €235 net.

I have the following questions:

1) Is a CO2 sensor useful? What are the advantages and disadvantages? Is it just an improvement in comfort, or does it also reduce electricity consumption because the mechanical ventilation system regulates itself automatically?

2) In which room would a CO2 sensor make the most sense and why? In the master bedroom or the living room? We have a relatively open area on the ground floor consisting of the living room, kitchen, and dining room. The master bedroom is located on the first floor.

Thank you very much for your input! If you need any additional information for a more informed response, please let me know.

Best regards

VOC sensors would be more useful, ideally at least two. One in the kitchen and one in the master bedroom.

Since you are only using one CO2 sensor, place it in the master bedroom.

Basically, this is a comfort issue. You won't save electricity with it, at least not significantly.