Are there ready-made solutions for indoor CO2 control?

Question

Sensors

It infuriates to constantly open / close the window when it becomes stuffy in the room (not closing is not an option, at minus five - I think it’s not so hot either). I decided to buy an air conditioner that would ventilate the room itself when CO2 was exceeded, but was surprised to find nothing of the kind in stores. There is no desire to fence your crutches with arduino. Are there ready-made solutions for indoor CO2 regulation on the market?

Answer 1

There is a thing called a breather
https://habr.com/ru/post/482352/
https://habr.com/ru/company/tion/blog/
And yes, if anything, a regular air conditioner does not "ventilate" at all, but just circulates air inside the room