TT21 Classic

The TT21 Classic strips everything back to what matters: clean design, efficient heat, and effortless operation. Cast iron top, door and combustion chamber floor combine durability with timeless elegance. The magnetic door-closing mechanism uses no moving parts in the closing system, helping reduce wear and maintenance compared with a conventional mechanical closing mechanism. A single control handle manages combustion with built-in ignition function, keeping the whole experience beautifully simple. The 4.5-litre ash drawer comes with its own lid, so even emptying is clean and unfussy. With a 5kW nominal output and an operating range of 3–7kW, it heats spaces from 30 to 120m² — modest on the outside, serious where it counts. Up to 5-year warranty, subject to TermaTech’s warranty terms and conditions. This is Scandinavian craftsmanship at its most honest.

Key Specs

• Heat output: 5kW nominal (3–7kW range)
• Efficiency: 81%
• Energy rating: A+
• Dimensions: 955 H × 514 W × 429 D mm (excluding adjustable feet)
• Combustion chamber: 340 × 271 mm
• Room size: 30–120m²
• Fuel: Wood only
• Smoke Control Areas: DEFRA exemption requires the separately purchased TermaTech DEFRA kit, part number 69TT2022DK, and installation and operation in accordance with the approved instructions. The DEFRA kit is not included with the stove.
• Ecodesign Ready
• Flue connection: Top or rear
• UK flue connection: 150mm spigot supplied with the stove
• Fresh air connection: Yes
• Ash drawer: Yes (4.5 litre with lid)
• Glass cleaning system: Yes
• Weight: 103kg