We just had a run in with a 4250. Was our first bator, purchased on Jan 25th and put 12 eggs in same day , 7 eggs seemed to be developing nicely. Temp and Humdity were rock solid until about day 17 when we started to see the temp climbing on the unit but dropping on the 4 extra thermometers inside. We even stuck a human thermometer and meat down through the vent hole. All 4 were pretty close but nothing like the machine temp.
Well be raising the desired temp a few degrees we seemed to be able to offset but had to continue to raising to the unit to keep it anywhere near 100F. Luckily our first little girl came out a day early. The next day a pip but we thought he wouldn't make it out as the temp was all over the board. Finally late on Day 22 he broke free as the heater pretty much failed completely. We took him out early to stay warm and dry under heat lamp. By the next morning the temp was down to ambient in the room, 75F even though we now had the unit set to 110F. We tried to use the heat lamp and a large bin cover with saran wrap with a vent and wet paper towels but no sign of life at Day 25.
Fortunately
Tractor Supply took the ubit back for store credit cuz we were within the 30 day warranty. And there in lies the problem. How bad does you product have to be to only give 30 days. Good thing we used it right away.
So now we are hooked so after returning the 4250 did better research and dropped a few dimes on a new
Brinsea 28 EX from
Amazon. Price there was better than the
Brinsea site and free shipping and 5% cash back from my
Amazon Card to take the sting out. It arrives later today.
It has a 3 year warranty. Warranty matters, kicking myself for not looking at that before hand.