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HS Tarm Wood and Biomass Boilers

Updated: Feb 20, 2017
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HS Tarm is a manufacturer of wood and biomass boilers for private residences. The company is privately held and headquartered in Denmark.

Corporate History

HS Tarm Company was founded in the early 1900's by Rasmus Sorensen.  His son Han expanded the company to include wood stoves and central boilers, manufacturing his first boiler in 1927. It was his initials (H.S.) that were eventually incorporated into the company's name and logo.

The company was sold to the British BAXI Group in 1993 and changed its name in 1999 to BAXI A/S. In 2009 the BAXI Group merged with DeDietrich Remeha and was renamed BDR Thermea. In 2010 the company was sold to Martin Sorenson, the grandson of the founder of HS Tarm.

For many years HS Tarm products were distributed in the United States by New Hampshire-based Tarm Biomass, but in 2016 the company began phasing out as the company’s distributor.

Product Lines

HS Tarm wood and biomass heating products include the Solo-Innova, Bonus Light, TK, and DBK. The Solo-Innova is a top-of-the-line unit available in 30kW and 50kW models, and a 150ltr log chamber is standard.

The Bonus Light is a 30kW unit with a 90ltr long chamber. The TK is available in 30kW and 45kW models with a 150ltr combustion chamber and an induced gas fan.


The DBK gives you the option of a 30kW log boiler or a 22kW pellet boiler and features automatic change over between log firing and pellet firing. 

Contacting HS Tarm

HS Tarm
Smedevej 2
Tarm, 6880

Phone: 9737 1511


HS Tarm boilers are covered by a 20-year limited warranty. 

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