The Sureflow device removes air and dissolved oxygen from heating systems to prevent corrosion. It creates a vortex that draws air out of solution through an automatic air vent. This results in higher flow and return temperatures, increased hot water supply, and savings of up to £150 per year for the average household. Over its 40-year lifespan, it can save £6,000 on fuel bills and reduce CO2 emissions by 40 tonnes. Installation is simple, with no ongoing maintenance needed other than occasional cleaning of the air vent.