Heating, cooling, humidifying, dehumidifying, steam-water and air circulation, water and air filtration, mechanical, pneumatic, electronic and electrical controls of environmental air conditioning and equipment cooling systems such as blood banks, surgical and urgent care climate control systems, computer room climate control areas and other complicated systems required for CT Scan machines and cardiac cath equipment which must not overheat. The VA Central Ohio Health Care System consists of four community-based outpatient clinics, a stand-alone behavioral health clinic, and a level 2 complexity health care center that offer a full spectrum of primary care services, urgent care, evidence based behavioral health care, specialty medicine services, and same day ambulatory surgery for more than 50,000 veterans in 14 counties throughout central Ohio.