Exposure to cold temperatures is, often, a neglected problem in ICUs, CT, AND MRI scans it may cause several discomforts such as shivering, lung diseases, and artifacts in scan reports, etc., one of the leading influences of the overall sensation of cold discomfort is the cooling of the back. This study aimed to evaluate the effect of a heated ambulance mattress- prototype on body temperatures and thermal comfort in an experimental study. The endotherm patient warming mattress and ambulatory patient mattress are the preexisting projects. The Inditherm mattress is designed for use by all patients undergoing anesthesia who may be at risk of inadvertent pre-operative hypothermia, and for any patients who require warming in pre-operative, intra-operative, and postoperative settings the ambulatory mattress is generally a warming mattress. The main disadvantage is that these two technologies are not automated the operator has to set all parameters. In this project, we are designing a mattress that liberates heat depending on room temperature. The Lab VIEW controls on and off of the system it compares the room temperature with the present value and produces a suitable result. The main advantage is the project is fully automated and warms the patient only at the required time.