Temperature stability problem for the heating system were difficult because these systems often have very high heat inertia, especially when there is noise and bias effects on measured values. Theoretically there are many control methods are applied to this problem. However, the purposes of scientific research and experimental work, this report presents a summary of the two design approaches PID controllers and controllers FLC (Fuzzy Logic Controller) for the temperature to stabilize CRT 916 921 heating system and quality survey of the heating system when the noise impact. The implementation of the controller is built on Visual Basic 6.0 environment using standard RS232 interface and is packaged for easy installation.