Since 1998, EDF R & D provides energy monitoring of an office building (S = 16633m2) in Lyon and is heating and cooling by a thermo frigo pumps on groundwater. In 2014, it was decided to renovate the production of hot and cold and replace:-The Existing thermo frigo pumps (with piston compressors) by new machines with variable speed compressors.-All the water pumps with new variable speed pumps The measures realized average 2015-2017(variable speed compressors), compare to average 1999-2013 (pistons compressors), have shown that-The building consumption was reduced by 37%-The consumption of water pumps 47%-The consumption of thermo frigo pumps lowered by more than 50% and the COP heating + cooling (*) factor improved by 70%!.-The CO2 emissions are also reduced by 50% compared to older the heat pumps. Compared to a gas boiler and chiller solution, the heat pumps with the new machines reduces the CO2 emissions of 83%.-All of these improvements led to a reduction in CO2 emissions of 37% (of the building). This is the only site in France that has measures (before and after replacement) and certainly the only site in Europe.