Abstract: The invention relates to a thermoelectric installation, in particular to a heat pump.This installation includes thermoelements mounted between thermal exchange walls belonging to hot exchangers through which a hot fluid circulates and cold exchangers through which a cold fluid circulates, said hot and cold exchangers alternating with thermoelements to form batteries arranged side by side or imbricated in such a way as to constitute a drawer of parallelepipedal appearance. A joint is provided at the level of each plane of thermoelements, this joint being constituted by a plate including the same number of apertures as there are thermoelements in said plane, this joint being nipped between the facing walls of the hot exchanger and of the cold exchanger and including, in addition, a peripheral rim acting in conjunction over the whole or part of its length with a bearing surface formed in the framework. A displacement mechanism is provided to produce a relative displacement between the drawer and the framework.