Seacliff Mechanical Service

Penn Air Control is an independent test and balance engineering company and a member of the Associated Air Balance Council. Its services include hydronic test engineering, life safety control performance verification and the review of control sequences and interlocks. In addition, Penn Air Control offers cooling tower thermal performance and sound and vibration testing services. It also offers a clean room and flow hood testing and certification program. Penn Air Control checks duct air leakage. The company is a part of The Penn Air Group, which has been providing heating, ventilation and air conditioning energy conservation and indoor air quality solutions since 1972.

Southland Industries is a mechanical systems engineering, construction and maintenance company. The company provides design, construction and maintenance of mechanical systems, process piping, plumbing, floor and wall systems and fire protection for a vast array of advanced technology and commercial and institutional projects. The staff includes registered professional engineers, project managers, project engineers, sheet metal shop and pipe fitter fabricators, sheet metal and pipe fitter field mechanics and a professional support staff of accounting, information management, human resource, marketing and safety personnel. Since 1949, Southland Industries has designed and built systems that are coordinated with other disciplines. The company is involved in a variety of projects that range from high-rise offices, luxury hotels and public facilities to the advanced technology projects for the semiconductor, telecom, biotech and biopharmacy industries. The company has an office in Garden Grove, Calif.