Allbrite has converted the Standard ST1 stove by Saltfire to be a flueless burner, using state of the art Bio-ethanol systems you can now site this burner in any room. The clean burning of bio-ethanol gives of no harmful gasses. This particular model is very common in conservatories due to its size and heat output.
As with all of the flue-less burners you can at any time add a flue and burn logs on it should you wish to at a later date.
The result of thousands of hours of development, the ST1 is one of the most efficient and clean-burning stoves available today.