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Efficient heating with style: Lean 2L-70h and 2R-70h

Experience the perfect symbiosis of functionality and design and make your home even cozier with these exclusive fireplace inserts from Spartherm.

Fireplace inserts with maximum efficiency and minimum space requirements

The two Spartherm models Lean 2L-70h and Lean 2R-70h set new standards in fireplace construction and offer a unique design and maximum efficiency. These innovative fireplace inserts are ideal for small living spaces as they take up minimal space while providing an impressive fire experience. With their shallow installation depth, they fit seamlessly into any room design and are particularly easy to install. Spartherm's high-quality workmanship and innovative technologies guarantee clean combustion and efficient heat output.

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Fireplace cut around the corner sits in the wall

NEW! The Lean 2L-70h fireplace insert also impresses with combustion technology in a small space.

TO THE PRODUCT
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COZY WARMTH FOR EVERY ROOM

The Lean 2L-70h and Lean 2R-70h fireplace inserts are perfect for anyone looking for modern combustion technology in a small space - including an L-shaped fire viewing panel, which is particularly suitable as a corner solution. It's up to you to decide which variant suits you best: the narrow side panel can be positioned on the left or right. This creates a calm, harmonious flame pattern with very low emissions.

The appliances are also deliberately compact when it comes to the connection: With a connection diameter of just 150 mm, they even work with smaller chimneys. The Lean models have been specially developed for apartments and houses with limited space and low heating requirements.

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Custom-made products - individual solutions for your fireplace

Sometimes it just has to be tailor-made: If standard solutions are not enough, we at Spartherm offer you custom-made fireplaces and fireplace cassettes. Whether special sizes, special shapes or individual designs - our experts will support you with the planning and implementation.

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Meets all requirements - on the safe side with Spartherm

Can I still use my open fireplace at all? Many fireplace owners ask themselves this question - especially in view of stricter environmental regulations. The clear answer: Yes - with a fireplace cassette from Spartherm. Our models meet all current legal requirements, including

  • the 2nd stage of the Federal Immission Control Ordinance (BImSchV)
  • and the EU Ecodesign Directive

For you, this means: lower emissions, higher efficiency and a safe, sustainable fire experience.

Fireplace cassettes direct from the manufacturer

As a leading fireplace cassette manufacturer, Spartherm offers you high-quality solutions "Made in Germany" - with modern design, efficient technology and the highest quality standards. Whether a standard model or an individual custom-made product: With us, you get your fireplace cassette directly from the manufacturer, developed with many years of experience and manufactured with precision.

Our range is complemented by selected models from DRU - a renowned manufacturer from the Netherlands and part of the Spartherm Group. DRU stands for innovative firing technology, clear design language and maximum ease of use - perfect for anyone who wants to enjoy a stylish fire in an uncomplicated way.

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© 2026 Spartherm Feuerungstechnik GmbH