We turned them off in July or August. We were planning to start setting small batches of 30 or 40 eggs in early Jan for spring chick sales anyway so we are just a couple weeks early. Last fall we had a owl kill a couple of Sharon's blue Cochin hens The others we are just working on improving the lines. It's to cold to ship eggs this time of year, mid 20's at night here so I know it is ALOT colder north and west. It just doesn't give me a "warm fuzzy" feeling to even try shipping, i'd hate to have somebody spend good money on eggs and then not get a hatch because they froze on the way.
I checked the temp this morning and it about 99 to 100 depening on which thermometer you look at and 30 % RH. I wasn't thinking and should have taken one to work last week and calibrated it. Most of the digitals are reading low and the analog is dead on 100. I'm going to put a human thermometer in and see what that says before I adjust anything. It's cold in the back room to that may be the issue as well - it's about 60 in there and probably colder when we are using the fireplace.
Steve in NC