In Germany, 25 million heating pumps convey the heated water from the boiler to the radiators. 80 percent of them are outdated, inefficient and therefore real power guzzlers, according to Tanja Loitz, managing director of the non-profit co2online GmbH. These vintage pumps use more electricity than a television and washing machine combined.
As a result, they do not meet the strict efficiency requirements of a new EU regulation under the European ErP (eco-design) directive, which has been in force since January 2013. For heating and air-conditioning applications, manufacturers throughout the European Union are now only allowed to place particularly energy-saving high-efficiency pumps on the market. In 2015 and 2020, the efficiency specifications for glandless pumps will be tightened in two further stages.
The widespread use of high-efficiency pumps can make a significant contribution to climate protection. Electricity savings and CO2-Reduction are also very good sales arguments to convince property owners to replace an old pump that is still functional but inefficient with a new high-efficiency pump. With a new heating pump, the power consumption of the pump can be reduced by 80 percent.
With the pump check, homeowners can find out in just a few minutes how quickly a pump replacement will pay off. Owners can still secure a new pump at www.meine-heizung.de/gewinnspiel until June 3rd. Together with the manufacturers Grundfos, KSB and WILO, “My heating can do more” is giving away 15 high-efficiency pumps with a total value of around 4,500 euros.
The four heating pump types – from unregulated to highly efficient
A visit to the basement will quickly reveal whether it is worth replacing the pump. Homeowners can encounter these four types of pumps there:
Unregulated heating pump
This single-stage pump has no adjustment options or switches. It runs continuously with the same performance and consumes a correspondingly large amount of electricity. However, these pumps are likely to be found only rarely, since they have not been used for 20 years.
Multi-stage, unregulated heating pump
This pump has three setting options. The power consumption is about 30 watts at level 1. That corresponds to electricity costs of 47 euros per year. At level 3 (80 watts) it is already 125 euros. The system can usually be operated at a lower level. Or better: A high-efficiency pump is installed.
Electronically controlled heating pump
This pump regulates the output independently as required. This significantly reduces electricity costs because the heating pump works most of the time – when the thermostats are closed – in the partial load range. Owners can recognize these models by the fact that the performance is stated on the front with a “from to” range. For example: 30 to 80 watts.
high efficiency pump
This pump is the best solution because it has an optimized motor. It is also electronically controlled and adjusts its output to actual needs. The power consumption is only six to 30 watts. This puts it at an average annual power consumption of around 75 kWh and electricity costs of only 20 euros per year. A high-efficiency pump costs between 350 and 400 euros including installation.
Replacing the heating pump is particularly worthwhile if it is combined with heating optimization through hydraulic balancing. Then, in addition to the electricity costs, a further 110 euros can be saved annually on heating costs, because all radiators are now supplied with heat evenly and in an energy-saving manner.