Heat: Not really. 75 watt red lamp over the roost on the few nights last winter when it was expected to be -15 windchill --- wouldn't have needed that at all if my coop wasn't "open air"
If yes on heat, what method do you use (lamp, flat panel, etc.)?: see above
Insulated coop: Not at all. I put up a tarp on the north side to cut the wind.
Amount of ventilation you employ on average during the winter: Open air coop had fence walls on 3 sides, tarp on north side to keep the wind down during the winter.
Approximate coop size: 8ft x 8ft, 6ft high
Litter method: deep litter with pine pellets
#of chickens in coop: 10
Location (city and/or state and/or zone): Benton, Arkasnas
How many winters have you been through with your chickens?: 1
(Optional) briefly describe how your flock has fared using these methods: The girls kept on laying, and they didn't seem to mind the weather one bit, except they didn't much care for snow
I used a heated dog bowl to keep their waters thawed.
You can see my coop and the winter adaptations on MY BYC Page