The energy transition is no longer just a project for the future—it is a reality. Particularly in the building sector, which accounts for a significant portion of CO2 emissions, the focus is on the climate-friendly retrofitting of heating systems. Heat pumps play a central role here. As an efficient and low-emission alternative to oil or gas heating systems, they are heavily subsidized by the federal government. In 2025, the subsidy conditions will be more attractive than ever before. Homeowners who switch to a modern heat pump can receive grants from 70 percent of the investment costs. The BAFA subsidy for heat pumps in 2025 is thus a key building block on the path to a sustainable home.
New Responsibilities and Online Applications for Heat Pump Subsidies
An important change took effect on January 1, 2025: The Kreditanstalt für Wiederaufbau (KfW) is now responsible for funding heating systems such as heat pumps. The Federal Office for Economic Affairs and Export Control (BAFA) continues to oversee measures related to the building envelope and other building systems. Applications for BAFA heat pump subsidies are submitted exclusively through the digital KfW portal “Meine KfW,” which significantly simplifies and speeds up the process for applicants.
Breakdown of BAFA Funding for Heat Pumps
In 2025, the subsidy for heat pumps will consist of several components. The base subsidy amounts to 30 percent of the eligible investment costs. In addition, various bonuses may be claimed:
Anyone who installs a heat pump that uses natural refrigerants or harnesses environmental energy from the ground, water, or wastewater receives an efficiency bonus of 5 percent from the base rate. The Climate Speed Bonus is particularly lucrative: If an old fossil fuel heating system—such as an oil or coal heating system, or a gas-fired floor heating system that is at least 20 years old—is replaced, the subsidy increases by an additional 20 percent.
For owner-occupiers with a taxable annual household income of less than 40,000 euros, there is an additional income bonus of 30 percent. In theory, this allows for subsidy rates of up to 70 percent. With a maximum eligible investment cost of 30,000 euros per residential unit, a non-repayable grant of up to 21,000 euros can be obtained—a worthwhile investment in modern heating technology.
Technical Requirements for Funding
For a heat pump to be eligible for the 2025 BAFA subsidy, it must meet certain technical requirements. Starting in 2025, connection to a certified smart meter gateway is mandatory. This enables intelligent consumption tracking and prepares the heat pump for smart integration into the power grid. Additionally, the model must be listed on the BAFA’s list of eligible heat pumps. The list also includes the required efficiency ratings and model information.
Additional Regional Incentives for Heat Pumps
In addition to nationwide funding through KfW, some states and municipalities offer supplementary programs. In Hamburg, for example, the BAFA heat pump subsidy can be increased by up to 20 percent if certain requirements are met. Anyone planning an energy-efficiency renovation should therefore also look into local funding opportunities, as this can lead to additional savings.
How to Qualify for the BAFA Heat Pump Subsidy in 2025
Thorough planning should take place before submitting the application. A certified energy consultant can draw up an Individual Renovation Roadmap (iSFP), which is also eligible for funding and can earn additional bonus points. The next step is to obtain and document quotes from specialized contractors. Work may not begin until the application has been successfully approved via the KfW portal. After installation, the contractor must issue a confirmation to initiate the disbursement of the funding.
Low-Interest Supplementary Loans from KfW
In addition to the BAFA grant, KfW offers low-interest loans to finance the remaining costs. These are particularly appealing to middle-income households. Combined with the heat pump subsidy, this creates an attractive overall package for energy-efficient retrofitting.
Conclusion: Take advantage of the BAFA Heat Pump 2025 grant from now on
The 2025 BAFA subsidy program for heat pumps sends a strong political signal in support of climate-friendly heating technologies. Thanks to the combination of a base subsidy, attractive bonuses, technical support, and a digital application system, homeowners not only benefit financially but also invest in a sustainable, modern heating system. Those who act now can secure government grants of up to 21,000 euros and make their property ready for the future.
