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IntroductionResterilizable medical devices go through a washing process, where the temperature/duration combination usually complies with a factor A0=3,000. In the context of energy constraints, we aimed to determine the most energy-efficient pairing.MethodWe modeled the curve corresponding to the equation controlling the factor A0 = 3,000, then selected the combinations to be measured, corresponding to the curve’s inflection points. We installed a multimeter to measure the electricity consumption of our washer. Electricity consumption was computer-modeled, and the lowest point of the curve was determined.ResultsThe electricity consumption of our washer follows a polynomial curve of equation 32.043.x² - 5,875.3.x + 276,555 (R=0.993). The lowest point on the curve corresponds to the 92°/190s pairing, with lower electricty consumption than the 93°/180s pairing currently used in service (p DiscussionWe were able to determine the most economical pairing in terms of electricity consumption on our washer. Further measurements are to be carried out on our other washers, to determine whether the results observed are also applicable to them.