i put the lid back on and also put the plxiglass on and the temp is sitting at 81.4 which is good thats with the UTH. BUT the windows are open. tomorrow when i go to work they will be closed agian. i think ill run home at lunch time and check it, if its too hot i will unplug the UTH. ( i work from 7 to 330 and take lunch at noon) i will also have my wife keep an eye on the temp. when i got home is when it read 85.6 i dont know how long she was in that range for. shes buried 100 percent so shes in the cool moist eco earth. i think she will enjoy the summer soo much more. her eco earth stays more moist because the temp is natural compared to the infrared drying it out.