The advantages of a solar water heater
The solar water heater is an ecological and economical solution for producing domestic hot water. The principle is based on the use of thermal solar panels that capture the sun’s free energy. This technology can cover between 50% and 70% of a household’s annual hot water needs, depending on the region and the amount of sunshine.
In financial terms, the investment pays for itself in an average of 5 to 10 years, thanks to the savings made on energy bills. What’s more, some regions offer substantial subsidies (MaPrimeRénov’, reduced VAT, local grants) that can cover up to 50% of the total cost of installation.
Key steps to successful installation
1. Preliminary study and sizing
A precise analysis of hot water requirements (number of inhabitants, consumption habits) helps determine the optimal size of the installation. Professionals generally recommend :
- 1 to 1.5 m² collector per person
- A 50 to 80 liter tank per m² of collector
2. Choice of location
Solar panels should face south (with a tolerance of ±30°) and be tilted at 45° for optimum yield. Shading from neighbouring buildings or vegetation should be avoided.
3. Technical installation
The site includes :
- Installing solar collectors on the roof
- Storage tank installation
- Hydraulic and electrical connections
- Setting up the control system
4. Commissioning and maintenance
After filling and purging the circuit, a professional makes the final adjustments. Annual maintenance (checking the heat transfer fluid, checking the condition of the collectors) helps maintain performance.
Financial aid and administrative procedures
To benefit from the various subsidies, it is necessary to :
- Installation by an RGE (Reconnu Garant de l’Environnement) professional
- Keep all invoices and receipts
- Apply for grants on time (often within a year of completion)
Calling on a qualified professional
Installing a solar water heater requires specific skills in plumbing, electricity and roofing. Our company, specialized in renewable energies, offers you :
- A free personalized study
- Installation by certified technicians
- Follow-up on administrative procedures
- Comprehensive after-sales service
With an average lifespan of 20 years and substantial savings, a solar water heater is a sound investment for your home. Our advisors are at your disposal to study the solution best suited to your situation.
