If you are thinking about replacing your heating system, the KfW subsidy 458 could be just the thing for you. This funding supports you financially and at the same time helps to reduce your home's CO₂ emissions. Find out what is behind this heating subsidy for private individuals and how you can benefit from it.

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What is KfW funding 458?

KfW funding 458 is a subsidy that is offered as part of the Federal Funding for Efficient Buildings (BEG). It is aimed at private individuals who want to replace an old heating system with a new, climate-friendly heating system or connect it to a building or heating network.

What is being funded?

• Installation of heating systems: Electrically powered heat pumps, solar thermal systems, biomass heating systems and hydrogen-powered heating systems.
• Planning and consulting costs: Technical planning and construction support by energy experts.
• Complementary measures: Acoustic planning and environmental measures.

The following are not eligible for funding:

• DIY or prototype systems.
• Used heating systems.

Who is being funded?

• Private individuals who own or leased residential real estate.
• Homeowners' associations (WEG) for joint ownership measures.

How much is the subsidy?

The subsidy under KfW 458 funding can amount to up to 70% of the eligible costs. Eligible costs of up to 30,000 euros are taken into account for a single-family home, which makes a subsidy of up to 21,000 euros possible. For apartment buildings, the maximum funding amount depends on the number of residential units: 30,000 euros for the first residential unit, 15,000 euros for the second to sixth residential unit and 8,000 euros from the seventh residential unit.

The subsidy is made up of the following:

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What requirements do I have to meet?

In order to receive the KfW subsidy 458, certain requirements must be met:

• The measure must Increasing the energy efficiency of the building and/or increase the share of renewable energy in final energy consumption.
• Funding is exclusively for existing residential buildings available, their building application or building permit at the time of application at least five years is behind.
• The new heating system is to be installed with a Optimizing the heating system connected. This includes carrying out a hydraulic balancing or adjustment of air flow rates to ensure efficient and uniform heat distribution in the building.

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How do I submit the application?

The application is submitted in five steps:

1. Hire experts: Before the application can be submitted, an energy efficiency expert or a specialist company must be commissioned. They create a “Confirmation of Application” (BzA), which documents the total eligible costs and compliance with technical requirements. Only experts from the official list of the German Energy Agency (dena) or certified specialist companies are allowed.
2. Conclude a delivery or service contract: A contract with a suspensive or terminating condition is necessary. This condition ensures that the contract only becomes effective after funding has been approved. The contract must state the planned implementation date of the measure, which must be within the approval period.
3. Register and apply for a subsidy: The application is submitted online in the KfW customer portal “Meine KfW”. This requires the BZA ID, which is issued by the commissioned expert. important Is that the application is submitted before the start of work, otherwise funding is not possible.
4. Implement projects: Once the commitment has been made, the measure can be implemented. It must be completed within 36 months. After completion of the work, the commissioned expert issues a “confirmation after completion” (BnD), which serves as proof of correct implementation.
5. Submit supporting documents and receive funding: Finally, all relevant documents must be uploaded to the KfW customer portal, including the BnD, invoices and, if applicable, other documents (e.g. for bonus funding). After successful verification, the subsidy is paid directly to the applicant's account.

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Can funding be combined with other programs?

KfW funding 458 can be combined with other public funding programs. However, there is a maximum total funding of up to 60% of the eligible costs. Please note that only one application can be submitted to either KfW or BAFA for the same eligible costs. However, subsidies from KfW can be combined with supplementary loans such as the KfW loan 358, 359.

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Is it allowed to start a project before the application is submitted?

It is not allowed to start a project before the application is submitted. The application for KfW 458 funding must be submitted before construction begins. The start of a project is already the conclusion of a binding supply or service contract, which takes effect without a suspensive or resolving condition. This scheme ensures that the measure meets the eligibility criteria and that the subsidy can be awarded.

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Which heating systems are eligible for funding?

Funding is provided for solar thermal systems, biomass heating systems, electrically driven heat pumps, fuel cell heating systems and hydrogen-compatible heaters. Innovative heating technologies based on renewable energy sources are also eligible for funding if they meet efficiency and environmental requirements.

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How long does it take to process the confirmation after it has been completed?

In many cases, the processing of the confirmation after completion can be completed immediately, so that the decision can be immediately viewed in the “Meine KfW” customer portal. If this is not possible, you will usually receive a response within one month of receipt of the confirmation. In any case, you will be notified by email.

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