The HMX-Ambiator works on the principle of cooling ambient air in two stages: indirect evaporative cooling (IEC) and direct evaporative cooling (DEC). At neither stage are chlorofluorocarbons (CFCs) used.The HMX-Ambiator uses up to 60% less energy to cool a space as compared to the energy consumed by conventional air conditioning systems to cool a similar area. The Energy and Resources Institute (TERI) certified this claim by recording the power consumed by HMX-Ambiators over a period of one year.Since the product consumes less energy, it also emits less carbon dioxide into the air. While a conventional air conditioning unit of 1 TR capacity used for a small office will emit 1 kg of carbon dioxide per hour, a comparable HMX-Ambiator will emit only 0.4 kg of CO2 per hour.A further benefit of the HMX-Ambiator is that it does not recirculate air, but sucks in filtered fresh air continuously from outside the building. This contributes to a healthier working environment with a minimal increase in carbon dioxide levels. Conventional air-conditioning systems only introduce up to 10% fresh air. As a result, carbon dioxide levels inside an air conditioned building can go up to more than 1,000 parts per million (ppm).