Vacon, Inc. a global manufacturer of AC drives, announced that they have entered a three year supply agreement with Bristol Compressors International Inc. This agreement will be to design and manufacture Variable Frequency Drives (VFDs) that will be used to control Bristol Compressor’s Benchmark VStar variable speed compressors. The custom designed, patent pending technology AC drive was developed by Vacon’s Chambersburg, PA facility where it will also be manufactured. "This partnership with Bristol Compressors allows Vacon to enter into the high volume residential HVAC marketplace which is an exciting growth opportunity for Vacon” says Tom Doring, president, Vacon North America. “This new compressor represents a major technical leap forward in efficiency and sound reduction and we are excited to be part of the overall solution”.