I'm curious where and when you are brooding chicks, and how many chicks you are brooding that you only use 50W. While the heating pad uses 180 for initial start up, I assume that after it cuts back to the 150 watts, it then cycles on/off, or the wattage ramps down to match what ever setting it is set at. I know very few people who can brood chicks at 50 watts, unless it's a very few and they are brooding them in their houses. Are you brooding in your house????One of our concerns is the cost of running electronic devices, which is why I asked about the wattage. Running something at 180 watts 24/7 isn't as cheap as running something at 50 watts 24/7.