Since 1965 DONWIL has been Western Pennsylvania's first choice for 7x24 reliability in Power and Precision environmental systems for critical applications. Representing Liebert Corporation, the leading manufacturer in the world of critical HVAC and AC/DC power systems, DONWIL has assembled the most respected team of critical support systems experts in the industry.

When asked to get involved in a mission critical project, we don't walk away after the initial sale. DONWIL continues to support customers both during and after the construction process, including all aspects of system procurement, start-up, commissioning, monitoring and maintaining these systems to ensure that they work as designed, and adapt as your company changes and expands.