The most common reason for condensing boiler breakdowns – loss of pressure

Probably the most common reason for a condensing boiler to fail to provide heat is due to loss of pressure. The heating circuit on most condensing boilers is a sealed circuit. It is usually pressurised to one bar. Most condensing boilers are designed to stop providing heat if the pressure in the sealed heating circuit drops below half a bar, so it is important to maintain the system pressure if you want to have heat. Continue reading