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Termatech TT21 Range

Introduced in 2017, the TT21 range is fast becoming known for its sleek Scandinavian design and high quality. Based on the best selling TT20 range.

The top plate, door, flue outlet and combustion chamber base are all made from cast iron, extending the lifespan and durability of the stove. The door has a unique closing mechanism, operated by heat resistant magnets for ease of use and a long service life.

  • A direct air kit is available for all TT21 stoves, allowing external air to be supplied through the stove’s air-ducts. This means that you can avoid opening windows and wasting heat
  • Large and easy to access ash drawer
  • The deep combustion chamber ensures that the flames are centred and minimised the risk of embers and ash falling out
  • The stainless steel handle is also available in a black lacquered finish
  • Wide range of accessories
  • Air wash
  • SIA Ecodesign Ready
  • HETAS approved
  • Defra exempt for smokeless zones (with the addition of the Defra kit)
  • A+ energy rating



Easy operation and high product quality combined with an attractive price

The TT20 series combines operating comfort, high product quality and a stylish Scandinavian design. We have designed the TT20 to be a real “everyone stove” that is one of the absolute best stoves on the market for the price.

The TT20 series naturally meets the latest – and strictest – European approval requirements: the efficiency is even over 83%. 7 different variants – all designed with a focus on solid quality. Whichever TT20 you choose, you can be sure of a solid construction and a well-thought-out design.



Choose between steel or soap stones with straight or round sides. All TT20 models can be connected to the chimney backwards or upwards. The combustion chamber bottom and the inner frame of the door are made of cast iron, which provides stability and long life.

The deep combustion chamber not only has the advantage that ash and embers cannot fall out. This also means that the stove very rarely has to be cleaned of ash, and that there can be a good layer of embers, which ensures a long reheating. As an option, among other things, a wood-burning door with integrated fireplace set.



The handle is a so-called “cold handle.” That is, the handle is ventilated and its location means that it never gets hot, so you avoid burning your fingers.
The ash drawer is extra large and easy to reach when it rarely needs to be emptied. A lid is included so that the ashes can be carried out without it swirling up.


The operation of the TT20 series is so simple that everyone quickly and easily gets used to it. The combustion is easily adjusted with a single handle, and the effect can be seen immediately in the fire. The built-in start-up function makes the use of the TT20 a breeze. All TT20 models can be equipped with external combustion air and have an output of 5 KW, which can heat up to 120 m2.
Another practical detail is the moulded glass or metal plate that can be placed in front of the oven. This solution is extremely practical as the plate can be easily removed by cleaning.


Energy Performance Labelling Rating A+
Combustion Chamber W/D (mm) 340/271
Operating Range (kW) 3 – 7 Kw
Efficiency 83.4
Warranty (up to, years) 5
Spigot Top or Rear








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