IFrom the simulations we can see that PID and can be used for temperature control ON / OFF controller, but the PID controller proved to be more accurate. The ON / OFF controller has switch and misfire, can be applied to systems where precision is not required response. While P regulators are adequate and can maintain a nominal size within a certain tolerance. However, when you want to reach the set temperature as accurately as possible, they are not good enough as can be seen from previous simulations. Addition and regulator system it becomes slower but we get a shift of 3 ° C and then stabilization to the desired value. With the PI controller it is obtained on the elimination of static error. While PID the controller has the best response to the temperature control system that can be seen from previous simulations. This leads to the conclusion that the PID controller is most suitable for systems that require precision, PI controllers can be used in most systems where it is not required great precision. The ON / OFF and P controllers have the lowest precision due to the device with ON / OFF controller or permanent control deviation with P controller.