
Zero-interest eco-loan for heating: conditions to know from banks
4 min read
At the intersection of environmental and financial issues, the zero-interest eco-loan stands out as an essential lever for anyone looking to carry out energy renovation work, particularly in the heating sector. In 2025, numerous regulations and aids are being implemented to encourage property owners to improve the energy performance of their homes. But what are the real benefits of this eco-loan? What steps need to be taken and what conditions must be met to benefit from it? In this article, we will delve into the mechanism of the eco-PTZ, the types of eligible work, the financial institutions supporting this scheme, and how to overcome administrative hurdles to turn your renovation project into a reality.
The zero-interest eco-loan: a support for your heating projects
Since its inception, the eco-PTZ has aimed to facilitate access to energy renovation solutions for housing. To date, many banks participate in this scheme, such as Banque Populaire, Crédit Agricole, Société Générale, Crédit Mutuel, and Boursorama. These institutions offer specific support and advantageous loan options.

Types of eligible work
The works financed by the zero-interest eco-loan are classified into several categories, each with its own specificities:
Partial renovation: This includes targeted actions such as window replacement, wall insulation, or upgrading your heating system.
Global renovation: This category requires a broader approach, aiming to improve the energy performance of the entire building following a prior energy audit.
Non-collective sanitation: For homes not connected to the public network, it is possible to rehabilitate the sanitation system without consuming energy.
Conditions for obtaining
The eco-PTZ is available to both owner-occupants and landlords. However, there are several conditions that must be met:
The dwelling must be used as a primary residence and must have been built for more than two years.
The work must be carried out by a qualified professional, which often involves hiring a company with the RGE label (Recognized Environmental Guarantee).
The maximum loan amount for partial renovation work is €30,000, while it can reach €50,000 for global renovation.
Banks and eco-PTZ: how does it work?
Several financial institutions allow you to benefit from the eco-PTZ. Here is an overview of the main banks and what they offer:
Bank | Services offered | Maximum amount of eco-PTZ |
|---|---|---|
Banque Populaire | Personalized support, loan simulation | €50,000 |
Crédit Agricole | Energy renovation advice, help with file management | €30,000 or €50,000 |
Société Générale | Tailored loan, assistance in preparing the file | €50,000 |
Crédit Mutuel | Zero-interest loan, information on subsidies | €30,000 or €50,000 |
Boursorama | Simplification of administrative procedures | €50,000 |
These banks play a crucial role in the implementation of the scheme. They not only offer interest-free financing but also provide practical advice for selecting the most suitable works for your home.
How to combine the eco-PTZ with other aids?
It is possible to combine the eco-PTZ with other financial aids to maximize your renovation budget. Among these, one can find:
MaPrimeRénov': This state aid is intended to finance the remaining cost after requesting the eco-loan.
Subsidies from Anah: Offered for low-income households, they can contribute to financing the works.
Tax credit for the energy transition (CITE): Although modified, it remains available for certain works.
Practical example of combination
Imagine, for example, that you want to replace your old boiler with a more efficient heating system. By choosing to request an eco-PTZ of €25,000 to finance this project, you can also submit a file for MaPrimeRénov' to supplement this financing. This allows you to reduce your personal contribution and make your project much more financially accessible.
The procedure to follow to benefit from the eco-PTZ
To start the process of obtaining the eco-PTZ, it is important to follow several steps:
Evaluation of the work: Consult an advisor to determine the necessary interventions to improve the energy performance of your home.
Preparation of the file: Gather all the required documents, such as detailed quotes and specific forms according to your situation (metropolitan or overseas).
Submission of the request to the bank: Submit your file to the credit institution of your choice. They will review your financial situation, as with any loan.
FAQ
What are the eligibility criteria for the eco-PTZ?
You must be an owner-occupant or landlord, the dwelling must be used as a primary residence, built for more than 2 years and the works must be carried out by an RGE professional.
How long does it take to obtain an eco-PTZ?
In general, processing an eco-PTZ application takes between 2 to 8 weeks depending on the bank concerned and the completeness of your file.
Is the eco-PTZ cumulative with other aids?
Yes, it is entirely possible to combine the eco-PTZ with MaPrimeRénov', subsidies from Anah, and other financial aids.
Is the eco-PTZ accessible for a rental property?
Yes, but only if the property has been rented within 6 months after the completion of the works.
Who can help me with my steps?
Advisors in housing renovation such as those offered by France Rénov' can assist you for free in your eco-PTZ application process.