How to choose your geothermal system for your heating?
Summary for decision-makers
Key questions to consider when choosing a geothermal heating system
To successfully install a geothermal heating system, several aspects must be analyzed: the characteristics of the dwelling (age, location, size), the condition and specific features of the land, and thermal comfort needs (heating, cooling, hot water, and other areas such as a swimming pool). Choosing the right service provider is crucial: certifications (NF PAC, QualiPAC), warranties, consumption simulations, and information on financial assistance must be verified.
The installation of a geothermal system for heating requires a preliminary in-depth study of the habitat's environment, the specific characteristics of the land, the expectations in terms of thermal comfort, without forgetting the services and guarantees offered by the supplier.
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Before implementing such a project, it is essential to ask the right questions to effectively choose a geothermal system for your heating.
- Is the accommodation to be heated by geothermal energy new or old?
- Where is the house located: department, city, altitude?
- Is it a single-story building? How many levels and rooms does the property have?
Field
- What is the surface area of the land?
For information, it must be 1,5 times greater than that of the surface to be heated for the installation of a horizontal capture.
- What are the particularities of the land? Is it flat or sloping? Is it wooded? Does the ground already contain other structures (tanks, pipes, etc.)?
The expected thermal comfort
- What regulation mode: heating only or heating and cooling?
In the second case, is a reversible heat pump necessary?
- should domestic hot water be provided from the installation stage?
- Other areas to heat? A swimming pool, for example. Some systems allow you to alternate heating the home and the pool in mid-season using the same installation.
- Are the heat pumps offered NF PAC approved?
- Is the service provider part of a network of specialists or installers trained in geothermal energy? Is it QualiPAC certified?
- Does it offer you a personalized comparative simulation of your future consumption?
- Does the price offer he gives you detail each of the items in your installation?
- Does it offer you a minimum 2-year parts and labor warranty on your installation?
- Does he have ten-year insurance?
- Does he inform you of the tax and/or financial benefits?
Frequently Asked Questions
How can I determine if my home is suitable for geothermal energy?
Consideration must be given to whether the accommodation is new or old, its location (department, city, altitude), and its configuration (single storey, floors, number of rooms).
What are the site requirements for installing a geothermal system?
The land must have a sufficient surface area, in particular 1,5 times that to be heated for a horizontal capture, and it is important to take into account its slope, its nature (wooded or not) and the presence of other structures.
What criteria should you look for when choosing a geothermal energy provider?
It is recommended to choose a service provider offering NF PAC certified equipment, a member of a network of specialists or QualiPAC certified, and offering a guarantee of at least 2 years, a personalized simulation and clear information on financial aid.
Thematic glossary
Geothermal Energy
A heating technique that uses the heat from the ground to heat a home.
Pompe à chaleur
A system that captures calories from the ground or groundwater and releases them as heating.
Horizontal capture
A method of recovering heat from the ground by installing shallow pipes spread over a large area.
NF PAC
French certification standard guaranteeing the performance and quality of heat pumps.
QualiPAC
Professional certification for heat pump installers, attesting to their competence.
Ten-year warranty
Warranty covering damage related to the installation of heating equipment for ten years.
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