Home telephone or telemonitoring support can bring some aspects of specialised care and monitoring into the homes of people with heart failure. This updated Cochrane review confirmed that people with heart failure who received home telehealth support were less likely to die or go into hospital for problems relating to their heart failure than those getting usual care. Usual care involved visiting a GP surgery or hospital for care and monitoring, which may be difficult for frail people with limited mobility. The review included seventeen new trials since the last review was published five years ago. More evidence is needed on which people would gain most benefit, particularly considering that people with heart failure can have different underlying health problems, multiple conditions and care needs. Data on cost of the interventions compared to usual care was mixed (some found it more expensive and some less expensive overall). Information on the cost effectiveness of telehealth support for people living with heart failure in the UK context was not covered by this review.