Source google image: https://cegibat.grdf.fr/sites/default/files/styles/media_image_content_block_image_lg_md_sm/public/Principe%20de%20fonctionnement%20du%20CESC.png?itok=0HrRblxk
Plus d’eau chaude panneau solaire
Source google image: https://cegibat.grdf.fr/sites/default/files/styles/media_image_content_block_image_lg_md_sm/public/Principe%20de%20fonctionnement%20du%20CESC.png?itok=0HrRblxk