Solar Water Heater Construction

Save energy with the installation of a solar water heater.

Install a solar water heater and use solar energy to heat the water in the house.

Using solar energy everywhere in france

The principle

Solar water heaters use solar collectors to heat domestic hot water in the home.

Solar collectors use the heat emitted by the sun on the roof.

A solar water heater: An important energy saving

The installation of a solar water heater can save up to 75% of the energy bill required to produce domestic hot water for the house.

In addition to the significant monetary savings, energy saving has a direct impact on our environment.

Solar thermal energy: How does it work?

How does it work?

Solar thermal energy is the transformation of solar radiation into thermal energy.

The fundamental principle is to concentrate and collect heat in black panels (solar collectors) under which circulates a heat-transfer fluid heated by the sun’s radiation.

The heat thus collected will then be transmitted to a water heater or possibly to an underfloor heating system.

The cesi (individual solar water heaters) provide you with domestic hot water free of charge thanks to solar energy all year round.

The solar collectors generally installed on your roof allow you to cover 75% of your hot water needs all year round.

They can provide all of your needs during the hot seasons.

Installing a solar water heater in your home

How to install?

The installation of solar collectors on your roof requires a prior declaration of work to the urban planning department of your town hall

The response time is generally one month. It can be extended to two months for areas under the authority of architects of france or the delegation of maritime works.

The installation of the solar collectors and the balloon is carried out upon receipt of the certificate of non-opposition from the town hall. The installation takes between 2 and 3 days.

Remember to check that your installer has the label qualisol, an independent label that carries out regular checks on the installers’ sites.

Solar water heaters require annual maintenance to optimize their performance and increase their lifespan.Solar Water Heater Construction

Technical characteristics of solar water heaters

Technical characteristics

The first characteristic to be defined is the storage capacity of the hot water tank.

It will be defined according to the number of people occupying the dwelling.

A consumption of 50 liters of hot water per day per inhabitant is an average. It is therefore necessary to have enough hot water in storage to meet the needs of the inhabitants in the evening when the sun no longer heats the collectors. For a family of 4 people, a 300-liter tank is usually proposed.

The number and surface area of the solar collectors required depends on the storage capacity of the tank.

Because it is the surface area of the installed collectors that will provide the energy to heat the stored water.

For a family of 4 people with a storage tank, one will generally install between 4 to 6m², i.e. 2 solar collectors.

The choice of the solar collector will be made on the quality of the glass (high transparency tempered glass), the type of coating of the heat conducting absorber and the back insulation of the panel.

Finally, the manufacturer’s warranty of the collectors and the storage tank must be taken into account given the long life of the collectors.Solar Water Heater Construction

Technical characteristics of solar water heaters

What is the cost?

The first characteristic to be defined is the storage capacity of the hot water tank.

It will be defined according to the number of people occupying the dwelling.

A consumption of 50 liters of hot water per day per inhabitant is an average. It is therefore necessary to have enough hot water in storage to meet the needs of the inhabitants in the evening when the sun no longer heats the collectors. For a family of 4 people, a 300-liter tank is usually proposed.

The number and surface area of the solar collectors required depends on the storage capacity of the tank.

Because it is the surface area of the installed collectors that will provide the energy to heat the stored water.

For a family of 4 people with a storage tank, one will generally install between 4 to 6m², i.e. 2 solar collectors.

The choice of the solar collector will be made on the quality of the glass (high transparency tempered glass), the type of coating of the heat conducting absorber and the back insulation of the panel.

Finally, the manufacturer’s warranty of the collectors and the storage tank must be taken into account given the long life of the collectors.

How much does it cost to install a solar water heater in my home?

How much does it cost?

The installation of a solar water heater is a definite investment.

For a turnkey installation of a solar water heater, it is necessary to plan between 5 000 and 9 000€. This includes the solar collectors, the tank, the various supplies as well as the labor for the installation and commissioning.

Installation of a solar water heater a reduced investment thanks to the tax credit.

The french state wishes to help develop the use of renewable energy.

32% tax credit for solar water heaters and solar heating (solar collectors meeting cstbat certification or solar keymark certification or equivalent)

What amount of expenses does the tax credit apply to?

The tax credit covers the price of equipment and materials, excluding labour, meeting the characteristics.

What is the amount of expenses eligible for the tax credit?

For the same taxpayer and the same dwelling, the amount of expenses eligible for the tax credit may not exceed, for a period of five consecutive years between january 1, 2010 and december 31, 2015, the sum of 1000 € / m² of solar collectors installed (article 18bis of the general tax code, annex 4).

To know your rights to the tax credit, you are advised to refer to the provisions of article 200 quater of the general tax code.

For the application of this measure, it is strongly recommended to refer to :

The website www.impots.gouv.fr (page on the tax credit)

Article 200 quater of the general tax code, article 90 of the 2005 finance act, article 83 of the 2006 finance act, article 109 of the 2009 finance act and article 80 of the 2010 finance act.

The tax instructions 5b-26-05, 5b-17-06 and 5b-17-07

The decrees of february 9, 2005, december 12, 2005 and november 13, 2007 issued for the application of articles 200 quater and 200 quater a of the general tax code relating to capital expenditure on the main dwelling and amending annex iv to this code

Sections 81 to 83 of the 2012 finance act

Installation of a solar water heater from the aides regionales, departmental, and anah.

Some regions, town halls or the anah also subsidize the installation of photovoltaic panels by granting financial aid. Find out more directly from these administrations or from your espace info energie.

A vat reduced to 7% for homes older than two years.

Installation of a solar water heater a quickly amortized investment

The installation of a solar water heater can save up to 75% of the energy needed to heat domestic hot water. This represents for a 4-person household equipped with 2 solar collectors and a 300l storage tank an annual saving of 2700kwh.

A solar water heater in paris will heat 300 liters of water daily and free of charge in summer and up to 150 liters of water in february.

With the tax credit, the various financial aids and the energy savings made, the investment of a solar water heater installation is amortized in a few years.

The environmental impact of installing a solar water heater

Environmental impact

Solar energy is the solution

Free and available everywhere on earth, solar energy allows us to heat your domestic hot water for free while generating very little greenhouse gases.

A household of 4 people will reject 1500kg/year of co2 to heat its domestic water against 500kg/year with a solar water heater.

The energy consumption will be divided by 4.

The solar water heater is the ecological solution to preserve the planet while maintaining our current living comfort.