Sophienstr. 30-32
DE 35576 Wetzlar
Products and innovations

Buderus air-to-water heat pumps Logatherm WLW186i AR and Logatherm WLW176i AR

Buderus air-to-water heat pumps Logatherm WLW186i AR and Logatherm WLW176i AR

Heat pumps with refrigerant of the future: The new Buderus air-to-water heat pumps Logatherm WLW186i AR and Logatherm WLW176i AR enable particularly future-proof, sustainable and quiet operation. Both monobloc heat pumps operate with a newly developed and efficient refrigeration circuit based on R290 (propane) as refrigerant, which is significantly more environmentally friendly than conventional refrigerants thanks to its low global warming potential (GWP) of three. By comparison, a heat pump using R410A refrigerant has a global warming potential almost 700 times higher. The two heat pump variants are available in the output range from four to twelve kW (at outside temperature A-7) for use in detached and semi-detached houses in new builds as well as in existing buildings. 

The new generation of Buderus air-to-water heat pumps sets a new standard, as it is one of the quietest heat pumps in its class thanks to the further developed Silent PLUS technology. For example, Silent PLUS technology avoids disturbing noise in your own garden and for the neighborhood thanks to the integrated sound diffuser. Both the outdoor unit and the indoor unit are very space-saving. They are therefore also suitable for small building plots and the smallest technical rooms. The outdoor unit with a height of 80 or 105 centimetre can also be placed under a window without any problems and looks noble and modern due to the titanium design.

Installation of the heat pumps is uncomplicated thanks to the well thought-out design. Thanks to their modularity, the units can be installed quickly and flexibly for any application. HVAC specialists do not need a refrigeration certificate, because the refrigeration circuit of monoblock heat pumps is completely closed. The connection between the indoor and outdoor units is made via piping with heating water.

Company profile

Buderus short portrait

Buderus, a leading European thermotechnology brand, offers economical and reliable system solutions for heating, ventilation and air conditioning. As a specialist wholesaler for heating and installation equipment, Buderus is also noted for its expert advice, comprehensive services and ideally matched energy-efficient heating systems from a single source.

The product portfolio ranges from oil, gas and wood-fired heat generators to storage tanks, from control systems and heating accessories to a comprehensive offering of systems using renewable energy sources such as heat pumps and solar thermal systems. Add to this technical innovations such as highly efficient fuel cell energy centers which generate both heat and electricity. All Buderus products offer maximum system compatibility. Thanks to the perfect coordination of all components, heating contractors can quickly and efficiently install customized solutions in both existing and new buildings of all sizes.

In early 2015, Buderus launched the Titanium line, a range of innovative and future-proof heating devices. These energy-efficient products stand out through their intelligent and modular design, optimum system integration, Internet connectivity and robust glass front with touch screen. Several Titanium devices have received the coveted iF Design Award, Red Dot Award as well as German Design Award for their attractive design.


Bosch Thermotechnik GmbH

Buderus Deutschland

Jörg Bonkowski

Sophienstraße 30–32

D-35576 Wetzlar


Telefon: +49 (0) 6441 418-1614

Mobil: +49 (0) 160 7067935




The stand in the interactive hall overview

The stand in the interactive hall overview