Collection: Open Vent Boilers

An open vent boiler, commonly referred to as a regular, conventional, or heat-only boiler, uses a system involving 2 tanks, a hot water cylinder and the actual boiler. Ideal for larger properties, open vent boilers efficiently meet the demand for hot water across multiple taps and shower heads. In contrast to system boilers, open vent boilers rely on a feed and expansion tank to maintain pressure, while system boilers utilise a pressurized heating circuit replenished by mains water. Nevertheless, both systems store hot water for later use rather than heating it on demand like combi boilers.