Background: People with chronic heart failure live in a complex situation that significantly affects both their social well-being and other health outcomes due to symptomatic burden and psychosocial factors. Interventions on social life dimensions should be offered to support maintained engagement in social life and roles and having relationships beyond the family. Adopting a person-centered care (PCC) approach implies moving toward a care model in which health plans are centered on patients' wishes, and they take an active role in their care and decision-making. Aims: To evaluate the effectiveness of a PCC intervention on the social dimension of people with CHF. Setting: Three Outpatient Heart Failure Units in Spain. Design: A multicenter randomized controlled trial following the new MRC framework for complex intervention using a program theory and logic model, and co-created together with patients and clinicians. The effect of a three-month intervention of a person-centered face-to-face and telephone intervention, in addition to standard care, versus usual care alone, will be evaluated in a sample of 340 people with CHF. Methods: The intervention will be developed by a multidisciplinary team of registered nurses, physicians, social workers, and psychologists from each hospital. The intervention's effect on patients' ability to participate in social roles and activities, level of perceived social isolation, and perception of social support will be measured, as the perception of self-efficacy, level of self-care, anxiety, and depression, and their overall health experience, as well as the rates of hospitalization, decompensation, emergency room visits, and death. The multidisciplinary team led by registered nurses will create a partnership with each patient, allowing them to express their goals, wishes, and resources regarding their health situation in a narrative. Both will jointly develop a person-centered health plan that will reflect short- and long-term goals, identify the resources available to the person and how they want to receive support from healthcare professionals. Subsequently, a monthly telephone follow-up will be maintained for three months to update the personal health plan. Tentative results will be presented at the conference.