(OLNEY) With summer semester classes set to start at Olney Central College next week, there’s still room for students to sign up for the HVAC certificate course. Those who begin OCC’s heating, ventilation, and air conditioning classes next Tuesday, June 5, will then graduate in just six months, later this year in December. Students will learn to install new and repair existing HVAC systems for both residential and small business purposes, plus students study everything from control circuits and refrigerant cycles to furnaces, boilers, and heat pumps. The classes are also offered in a hybrid format, reducing the time students are required to be in the classroom. For more details about the HVAC certificate program or to register, call the OCC Student Services office at 618-395-7777. With many other classes available at Olney Central College and the other three IECC colleges, check it all out online at www.iecc.edu. Summer classes begin Tuesday, June 5.