Study shows heat pumps are cheaper than gas boilers after 10 to 16 years

Study shows heat pumps are cheaper than gas boilers after 10 to 16 years
Study shows heat pumps are cheaper than gas boilers after 10 to 16 years

MUNICH (dpa-AFX) – According to a study by the Technical University of Aachen (RWTH), installing a heat pump can prove financially beneficial after 10 to 16 years. This is what emerges from calculations carried out at the request of the energy group Eon on exemplary houses dating from 2005, 1990 and 1980, which were presented on Friday in Munich. The investment and operating costs of a heat pump, including demand, were compared with those of new gas heating.

Calculations for older homes were not initially available, but Eon estimates the lead time should be somewhat longer. However, calculations indicate that it is quicker to combine the heat pump with an own photovoltaic installation. In this case, it only takes 11 to 14 years for the operating cost advantage to offset the higher initial investment.

For the heat pump, the study by Dirk Müller, professor at the Technical University of Rhineland-Westphalia, estimated the purchase cost at around 18,000 euros after deduction of the debt, and the additional cost of photovoltaics at 11 000 euros. For gas heating, installation costs were estimated at 15,000 euros. However, the operating costs of the heat pump were significantly lower than those of gas heating. In the case of photovoltaics, they were even much lower.

Differences in profitability depend on the building and its use, including the number of people living in the house. Müller explained that these were buildings without underfloor heating. With underfloor heating, the situation is more favorable to the heat pump. In principle, there is no category of building for which a heat pump is not possible.

Regarding the expected lifespan of heat pumps, Mr. Müller gave a value of at least 12 years. He stressed, however, that this does not mean the devices will be broken after this period, but that they may need to be repaired or replaced parts, which is much cheaper than a new installation. The calculations were also made based on the prices of branded devices, for which it can be assumed that spare parts will be available in the future./ruc/DP/stk

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