Historical villa in Hilversum, NL
Historic 1920 villa, in the past heated and supplied with sanitary hot water by 2 boilers.
The complete heating system was upgraded with an EnerTwin for space heating and heat pump with PV for sanitary hot water production. For extreme winter conditions one old boiler was kept as a peak boiler.
improvement of the energy label and substantial reduction of CO2 emissions.
Multifamily house in Dresden, DE
Group of 2-floor appartments. EnerTwin combined with a peak boiler and a buffer vessel.
The central heating room provides heating and hot water.
Post-war multifamily building in Dresden, DE
Five adjacent multilevel apartment buildings. In each of them an EnerTwin (for a total of 5) is installed in combination with a peak boiler and 2 buffer vessels for heating and hot water production.
Each of the 5 buildings has its own central heating room. Both heat and electricity are used within the appartments