Had no choice, I had to buy one, yesterday. The stat on my very dependable home made bator became 3 to 4 degrees to cold , It would not get warmer than 97 the first 3 days, I ran down to the local farm store and the only incubator they had was a Farm Innovator 4200, with fan.and turner. it took me 6 hours of messing with the stat to get it to stabilize temp, and I transferred the eggs, it has held perfect temp for 2 days now. It came with a secondary thermometer, (glass mercury, ) and I checked calibration with a known good thermometer, the mounted thermo, is junk and I covered it with tape, so I don't have to look at it. So for now It looks ok, the real story will be the hatch rate, I think I may use some of the components, to make a new bator, by adding a good stat, repositioning the fan, making a better box, I think the heat coil is ok, I like the turner,(never had one of those till now. Fingers crossed