The Edwards nHT series diffusion pumps provide stable high-throughput vacuum performance. Designed for optimum energy efficiency, flexibility and low maintenance, the nHT series is the ideal solution for avariety of demanding industrial applications. The nHT series diffusion pumps have been designed for optimum heat transfer to the oil, resulting in faster heat-up times and a significant reduction in energy consumption. In addition, the use of the Energy Efficiency Controller (EEC) provides further reduction in power consumption – up to 30% without the loss of pumping performance.