Winter ventilation for a small coop...

[RoosterML]

Did you put this up in the coop or did you put a sensor up in the coop and keep the other end inside? What should the humidity be?

I put the sensor in the coop basically at roost height, I also have another one outside. Your humidity should be at the same level as outside or better.
For example if your outside humidity sensor is at 50% and the sensor in the coop is at 65% you need to allow for more ventilation of the coop. If the sensors are the same or close within a few points you can't ask for better.

 

[MarkJP]

I like it. You should have some happy chickens with that set up.
With those manual opening vents in the top part that will give you some really nice control over what's going on inside. To me the best thing you could do is get something to monitor the humidity level inside the coop.
You can't go wrong with knowing what the humidity is exactly. Humidity should be as close to outside as possible. I would guess that on really cold windy or stormy days you can close those vents up and let the two little holes do the venting. After that use your judgement and crack those vents open accordingly. Maybe open them up a couple inches on each side. If you have one side with a prevailing wind close that one up and open the other side some more. It's nice to see your coop done with both good looks and function. I am not sure I would leave your pop door open on the bottom during cold windy days with the top vents being open, it seems that it would create a draft thru the coop running from bottom to top directly across the birds. I know you'll obviously have to open the door for them but maybe when the door is open you close the tops vents on cold days to minimize the drafting, and once you close the lower door you can open the top vents alittle. Like I said with your set up you will have some really nice control of how thing are inside. So don't get it wrong and everything will be just fine.
Almost forgot you could always permanently hang a ribbon in the coop and monitor the ribbon for movement. Will be a good indicator of what kind of draft the birds will feel.
And hello from CT also !!
This is Dummy proof so it's perfect for me it tells you if humidity is high or low:
View attachment 1593742

I have been closing the door when the go in for the night. I'm also monitoring how much I open the top sliding windows depending upon wind direction, and I will get a couple of those humidity meters soon. Thanks for all the input!