Wood-burning stoves: Heat output and efficiency (NT VVS 071)

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  • Report #: NT VVS 071
  • Approved: September 1988
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This test procedure describes how the heat output and efficiency of wood-burning stoves for domestic use can be tested.

The procedure implies that the stove is tested under operating conditions similar to those found in typical installations in single family houses or apartments.

The purpose of the test is to make it possible for consumers and others to be sure that stoves sold and installed have acceptable heat output and efficiency.


Nordtest is a trademark of Nordic cooperation in conformity assessment. The emphasis of Nordtest is to develop, promote and innovate Nordic test methods and pre-normative activity. Nordtest endeavours to remove technical barriers to trade and promotes the concept: “Approved once, accepted everywhere”.