I created a MHP in February with a brand new Sunbeam heating pad. I never used a thermometer but judged how well it was working by the chicks' reactions. I did turn it up to high when the chicks cheeped loudly (outdoor brooder) but it's worked great for my brood. They're fully feathered out and appear to be happy and healthy.I can understand your reasoning!!! Our heating pad we bought specifically for the MHP isn’t nearly as hot as our ancient heating pads (the ones we still use on ourselves… those old ones get hotbut oh so lovely for our muscles!!!) BUT I will say that I measured the temperature underneath the MHP we built with the new sunbeam and it read 82ish!!! So it still works!!! Just to encourage you!