The Galician Health Service has developed the TELEA tool, integrated into the electronic clinical record, performing telemedicine and home telemonitoring. Any patient with specific access, can send information in a pre-established format to his own electronic record. It is accessible to healthcare personnel from any point of the Galician healthcare network in real time. TELEA is a home-care platform integrated with clinical information systems, improving management of chronic illnesses and balancing the cost of resources used. TELEA integrates several functionalities: Videoconferencing, Personal Health Record, Custom Notifications, and is ready to incorporate any clinical protocol, allowing customization. 3,809 patients with chronic diseases plus 60,607 patients with COVID-19 are being followed up by TELEA in primary care. Profiles include: arterial hypertension, heart failure, diabetes mellitus, chronic obstructive pulmonary disease (COPD), COVID-19, oral anticoagulation treatment, among others. Significant improvements in health outcomes and reductions in resources required by patients; 17.23% reduction of patients accessing hospital emergency and admissions, 90.75% reductions in care nursing visits and 31.46% reduction in primary care doctor visits, with a user satisfaction above 85%. The lessons learnt from this practice include 1) there has been resistance to change by professionals and users for new health technologies, which have been overcome with the use of the well-designed technology, 2) new telemonitoring technology does improve user satisfaction and the management of their chronic disease.