Background: Heart failure with preserved ejection fraction (HFpEF) accounts for half of all HF cases, is difficult to diagnose and manage, and represents the fastest growing subtype of HF in the US. Lack of awareness about the HFpEF diagnosis among patients contributes to delays in seeking care, reduced participation in self-management, and worse health outcomes. Methods: This study explored HFpEF-related knowledge among patients using semi-structured interviews guided by the “Integrated Health Literacy Model”. Patients were asked to describe 1) their heart condition, as they understand it; 2) where they currently learn about their heart condition; 3) what they want to learn more about; and 4) who can help them learn more. Results: In this study, 10 patients with HFpEF were recruited from a local health care system ( Table ). All patients were unaware of having HFpEF; 8 out of 10 thought they had "congestive HF." Patients learned about their condition from cardiologists, primary care physicians and clinic staff. All reported using the Internet to seek information, though in some cases information was confusing or contradictory to what they were told before. Patients noted that they had symptoms for a long time before learning the symptoms were HF-related. Patients wish to know more about the prognosis, factors that can help or make their condition worse, signs and symptoms to monitor, use of wearable devices to monitor, how to live longer and non-pharmacological treatment options. Most patients wanted to learn more about their condition from cardiologists, however, some faced challenges in their current cardiology care, citing lack of time during the clinic visit, difficulty with medical terminology and inability to ask follow-up questions. Patients emphasized a need for more emotional support at the time of diagnosis and help addressing mental health. Conclusion: Patients were not aware they had HFpEF, expressed multiple needs for education and support, and identified cardiologists as the most credible source of education.