Henley Lisbon 21kw boiler

The Lisbon  21kw  Multi fuel cassette boiler is manufactured in beautiful Portugal from steel construction and boasts excellent burn control along with an 80% plus efficiency level. It is capable of heating up to 12/13 single radiators. Its sleek modern design and large viewing glass looks stunning in any home. Available in Charcoal with a choice of a 3 or 4 sided frame with external air as standard.

It comes with an airwash system which helps to keep the glass clean. It uses a specially placed vent or vents to draw in air from the outside to which will wash over the front of the glass.
It features a tertiary air system. This creates a cleanburn system where hot air pushed into the firebox above the normal height of the fire. This allows the excess gasses to combust given a cleaner burn.




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  • Additional information
  • Technical Data
  • Diagram


Stove Type

Boiler, Insert

Fuel Type


Technical Data

Power : 21kW (71694BTU)
Power to Water : 15kW(51210BTU)
Power to Room : 6kW(20484BTU)
Finish : Steel
Flue Size : 178mm
Flue Location : Top