With awareness of environmental and ecological issues, and rising energy prices, the energy performance of our homes is becoming increasingly important.
The legislation has also addressed this issue, with the tightening of the Thermal Regulation (RT 2012), and with the implementation of a number of control measures, such as the one that imposes and regulates the energy performance diagnosis. (DPE), which now obliges any seller of a dwelling to mention his energy consumption.
Moreover, it is also a criterion for the attribution of certain dedicated financial aids, like the PTZ +.
As a result, the performance and energy consumption of a single house is becoming a negotiating argument (especially price) as quality, and therefore an element that can not be neglected.
To improve the energy performance of your home, it will first be necessary to establish a DPE, preferably by a thermal design office rather than a building company, which may guide the results in the direction that it and encourage you to do work that is not essential or priority. Avoid also free thermal studies offered by all kinds of professionals, for the same
That said, since the profession is not regulated, make sure that the thermal design office that you are addressing has a liability insurance and decennial corresponding to this activity. Count between 800 and 1200 € for a complete diagnosis, according to the surface audited and the time of visit. It should also be noted that some regions offer grants to finance ECD, as is the case with the Regional Council of Aquitaine. Do not hesitate to inquire with the corresponding organizations
in your area.
The key to energy performance is first and foremost in insulation, which, if it is well done, will reduce the energy consumption of your home or even manage it efficiently and almost autonomously. Indeed, techniques and equipment adapted to the new standards of thermal regulation are developing more and more, and their costs are more and more accessible as the professional sectors are organized and the use of its products and corresponding techniques are becoming more widespread.
According to a study by ADEME (the French Environment and Energy Management Agency), insulation is all the more effective if you combine certain work packages with one another. For example :The combination of the attic insulation and the installation of a low-consumption condensing boiler makes it possible to achieve significant consumption gains, and to earn up to two points on a DPE, compared to a house heated with oil. or gas.The insulation of the walls from the outside associated with those of the attics,
if it proves to be quite expensive, will also assure you an energy saving of the order of 37%, and this bunch of works will also win you two points on your DPE compared to an oil or gas heated dwelling, and a point if it is heated with electricity.The combination of exterior wall insulation, attic insulation and low-energy boiler installation is the most expensive, but also the most energy-efficient work package in terms of energy savings. . If we can estimate the cost of this work between 13300 and 25000 €, they will allow you however to reduce your energy consumption around 62%.
The same ADEME study, like the ANAH (National Agency for Housing) guide on the efficiency of energy renovation works, states that it is difficult to obtain good energy performance without allocate a relatively large budget.However, there are a number of financial subsidies that you may be able to claim, which will allow you to finance a portion of your facilities:The sustainable development tax credit allows you to finance part of the energy renovation work of your principal residence, if it is already built.
It is capped at € 8,000 for a single person and € 16,000 for a couple subject to common taxation, plus € 400 per dependent.Eco-loan at zero rate is available to all owners subject to resources, and provided a package of work to achieve the level of energy performance recommended by the current thermal regulations.Regional or general councils sometimes provide substantial support for the financing of work to improve energy performance, just as it is also possible to obtain social aid from social welfare organizations, pension funds, the family allowance fund, or even from energy suppliers.