Air Conditioning, Heating, and Refrigeration Technology: Heating C35100H In-State Tuition and Fees: Out-of-State Tuition and Fees: Credentials: Certificate Credits: 17 Available Online: No 2025 Core Course Instructions Courses Recommended Semester Credits Take All Courses: Courses must be completed with a grade of "C" or better. AHR-110, AHR-111, AHR-112, AHR-114 See A35100 Air Conditioning, Heating, and Refrigeration Technology degree program for course availability and recommended semester. 16 2025 Other Required Courses Instructions Courses Recommended Semester Credits Take All Courses: AHR-160 See A35100 Air Conditioning, Heating, and Refrigeration Technology degree program for course availability and recommended semester. 1