One of the most significant benefits of ECG at home is convenience. Patients can take the test from the comfort of their homes, eliminating the need to travel to the hospital or clinic. Patients can schedule the test at their convenience, making it easier for those with busy schedules to prioritize their health. The portable electrocardiogram (ECG). It records the electrical activity of the heart continuously over 24 hours or longer while you are away from the doctor's office. A standard or "resting" ECG is one of the simplest and fastest tests used to evaluate the heart.