This paper deals with the influence of a low-intensity electromagnetic field of very low frequencies on the calcium carbonate deposit, in a gasketed plate heat exchanger by using a continuous circulation of water with a high scaling power at the laboratory level.To estimate the effect of this physical treatment, the results of two experimental campaigns are presented in this document. The first campaign shows the reduction effect on the quantity deposited in the exchanger in grams per day per unit area by the determination of Ca2+ and Mg2+ concentrations with ICP-OES after dissolving the deposit in 2 % nitric acid solution, and by monitoring the carbonate with TOC analyzer. The 2nd set of experiments aims to study the impact of electromagnetic field on polymorphism of calcium carbonate by RAMAN spectroscopy and by scanning electron microscopy (SEM). In addition, the elemental composition was determined by the EDX probe.Then, chemical speciation has been modeled with the geochemical Phreeqc software. The obtained results have then been compared to the experimental measurements in the presence or not of an electromagnetic treatment.Overall, in all the tested conditions, a reduction of 78.8 % of the deposit was observed without modification of the polymorphism of calcium carbonate.