Heating system renewal – starting where it makes a difference
According to the North Rhine-Westphalia Energy Agency and others, heating and domestic hot water account for an average of 70 percent of household energy costs. Consequently, renewing a heating system can pay for itself after a short time, even if it is a financial challenge. State subsidies can help to make the measure cost effective. To be eligible for these, renewable energies need to be included. This is because the state supports precisely those heating systems that allow heating with renewable energies. Over time, these not only benefit your wallet, but also the environment.
When should I renew my heating system?
You don't have to wait for the perfect moment to renew your heating system – spring, summer and autumn are all equally suitable. The obvious benefit of replacing a heating system outside of the heating season is that there is more time for improvements; measures can be completed before the colder months arrive. But a heating system replacement is also possible in the winter months – an installation can usually be done within one to three days. Aside from these factors, it is mostly a matter of keeping an eye on one's own cost drivers and checking in advance where the weak points of the old heating system are.
In the following cases, a replacement is worthwhile:
- Boilers aged around 25 years or more
- Old boilers that have not yet broken down but are already 20 years old (installed in the 2000s)
- Oversized boilers that take up a lot of space in the boiler room and run at permanently high boiler water temperatures
- If a flue gas inspector finds fault with the flue gas values during an annual inspection (e.g. flue gas loss of more than 11 percent)
- 30-year-old constant temperature boilers are subject to mandatory replacement in accordance with the German Building Energy Law (GEG)