You might like to read more in depth information about The Clean Air Act of 1956 and 1968.
A Defra Exempt stove has passed a lab test where its emissions are measured at its rated output and at a reduced rate. This is to help reduce air pollution in towns and cities that are Smoke Control Areas. A Defra Exempt stove can generally be used to burn wood in a Smoke Control Area - it actually depends what fuel the lab test was carried out with but this is nearly always firewood.
It is worth noting that the Ecodesign legislation, in effect since 2022, establishes emissions limits that are arguably even stricter than those set for Defra Exemption. However, the framework does not include the low output test. We may well see the introduction of an additional low output test for stoves that can be used in Smoke Control Areas after 2022.
The 6100 come in 4 different formats. The 6140 is the smallest model and the firebox will of course be the same on all 4 models.
The 6143 has a taller log store under the stove making the height 950mm.
The pedestal and side glass panels make up the Aduro 9-3 woodburning stove.
The 9 Air is the model to choose if you have a well sealed house and need to fit a direct air supply.
The Opus Calypso is a high-efficiency wood-burning boiler stove designed to provide both room heating and hot water.
The smallest of the Invicta Sedan models but with all the attributes that cast iron brings, the S has a 5kW heat output for smaller rooms or where it is a secondary heat source. Being cast iron it gives a more even heat distribution and allows the stored energy to continue to heat the space after the fire has gone out.
The Scandfire Opus 70 gives you the Scandfire all-in-one system that arrives on site ready to assemble. The Opus 70i woodburning inset stove sits in a solid chamber in the room from which the pumice chimney continues on and out.
The Opus Melody is a design classic, a lovely cylindrical stove that burns beautifully and very efficiently.
This multfuel cast iron stove has a nominal heat output between 7-8kw with a pretty decent fuel efficiency of 78%.
The 9kw nominal heat output of the Harmony 33 will suit larger rooms.