Various heating and cooling systems, refrigeration, drills, pumps, tools for hospital maintenance, small appliance repairs, electrical systems, vacuum cleaners, floor polishers, housekeeping equipment and chemicals, computer systems, fire alarm systems, pneumatic door systems, telephone systems, copiers, fax modems, and beeper call systems. As part of Optum, SCA Health is redefining specialty care by developing more accessible, patient-centered practice solutions for a network of more than 370 ambulatory surgical centers, over 400 specialty physician practice clinics and numerous labs and surgical hospitals.