95 manufacturers took part with more than 100 products in nine categories overall. For around five weeks, some 3200 trades people voted at haustec.de and chose their favourite products.

2020 Product of the Year in the "heating" category was the Weishaupt Thermo Condens WTC-GW 80/100-A gas-fired condensing boiler. These units have extended the maximum output of Weishaupt's wall-hung condensing boilers from 60 kW up to 100 kW, or up to 800 kW when installed in a cascade. Alongside its installer-friendly design, the boiler's key features include the self-calibrating Weishaupt SCOT System (Safety Combustion Technology) and the large turndown to 14.4 kW (at 50/30 °C).

In the "heat pump" category, Weishaupt's BiBloc WWP LB air-to-water heat pump secured second place. The BiBloc is available with capacity ranges starting at 3–10 kW for the WWP LB 12 model and extending up to 5.6–16.6 kW for the WWP LB 20 model. Aerodynamic aluminium louvres and owl wing-shaped ventilator blades ensure particularly quiet operation, with a sound pressure level of just 35 dB(A) even very close to the unit. That corresponds to the most stringent limits mandated by the Technical Instruction on Noise Abatement (TA Lärm) for residential and spa areas. The BiBloc heat pump can operate in outdoor temperatures as low as -22 °C and deliver flow temperatures up to 65 °C thanks to steam injection and the additional heat exchanger with electronic expansion valve. These functions make the BiBloc one of the quietest and most efficient air-to-water heat pumps on the market – a truly premium product for builders and renovators.