The high efficiency of these boilers is achieved by recycling and abstracting the heat from the exhaust gases where, in non-condensing boilers, the heat present in the exhaust gases is wasted to the atmosphere.
Biasi Riva Open Vent 18 Gas Boiler gas boilers are available as wall mounted and floor standing appliances and have been designed to blend in with other domestic appliances. Available in combi, regular and system types, Worcester's gas condensing boilers run at 90% (or over) efficiency. All our regular and system boilers are also compatible with Worcester Greenskies solar panels.