No, since those require both electricity as well as regular cleaning.We consistently get negative degree weather. I’m looking into ventilation fans. Any experience with those?
Negatives as in -5F? -20F? Or -40F? (Sustained, not quick dips, and not windchill)
At all of those temps I would still recommend the run roof, half of the coop wall being wire.
At -40F I would put in warming stations.