Netatmo weather station

Doug's Christmas present has FINALLY arrived.

It is a Netatmo weather station with a number of indoor sensors and a rain guage. We haven't set up the rain guage, but have 3 indoors and an outdoor sensor set up. They measure CO2 along with the normal weather station stuff of humidity, pressure and temperature. The master one also measures noise levels. The station can notify you about various conditions which might eventually allow us to link it in to heating control or other clever things.

There is also a weather map where you can see readings from lots of other stations. Only the external conditions not all the ones in the house.

I think the CO2 reading will be interesting. At the moment the house is quite well ventilated through none of the doors or windows fitting very tightly. However in the winter when we would freeze with a window open in the bedroom it can feel very fuggy and headache making. As we get the house better sealed with the hempcrete wall insulation, wood fiber and plasterboard on the inside of the roof and better windows we need to think about how we will ventilate but not lose too much heat. We are thinking we will install either single room heat recovery ventilators, or a single unit that does the whole house with duct work. At the moment we might be favoring the whole house solution because someone suggested a thing called a Canadian Well (may have other names too) where you run the air underground first to pre warm it in winter or cool it in summer. Still tinking about this - the underground pipe can get mouldy which is not great for air quality...

We also recently bought some scales that connect to the wifi and show nice (or depressing) graphs of your weight on a webpage or app.