Thermondo, a Berlin, Germany-based provider of innovative heating solutions, raised over €23m in Series C funding.
Backers included Global Founders Capital, E.on, Holtzbrinck Ventures, IBB and Picus Capital.
The company intends to use the funds to continue to innovate and launch new products.
Founded in late 2012 by Philipp Pausder, Florian Tetzlaff and Kristofer Fichtner, Thermondo provides efficient heating products such as condensing boilers, solar and fuel cell heaters.
The company also offers homeowners a complete package of services including consultation, preparation of proposals, applying for government subsidies, dismantling and disposal of old equipment, delivery, installation, maintenance and emergency.
It currently employs more than 200 people.