Tips to use less energy at home

[PVresistif]

For those who have an electric water heater
One way to consume 30 / 40% less for your water heater is to install it in the heated volume, ideally closer to the kitchen and bathroom; indeed if you take the instructions for a 200L water heater installed in an unheated room you will need 2.4 kwh by 24 to maintain the temperature; after 365 day it is 876 kWh or 131 € / year.
Install your water heater in the bathroom and you recover these losses to heat the bathroom (during the heating season so 9 month on 12) is about 200 € / year of recovered also counting water losses that you also eliminate if the devices are closer (more to run the water to wait for the arrival of hot water); I specify that insulating hot water pipes is irrelevant, it only delays cooling; in fact it is impossible to avoid thermal losses as soon as there is a difference in temperature, it is inevitable: the heat flow is proportional to the difference in temperature.
Choosing the location of your water heater, a decision of great consequence at the end of a lifetime ............ Do not expect energy sellers to give you that kind of advice, they are there to sell the maximum, they are not very interested in the planet but much more to your money .....
Greetings

[sicetaitsimple]

indeed if you take the instructions for a 200L water heater installed in an unheated room you will need 2.4 kwh by 24 to maintain the temperature; after 365 day it is 876 kWh or 131 € / year.

Can you specify your sources? It seems a little exaggerated, at least in total over the year.

[izentrop]

Yes, for a standard 200 l, it's around 2 kwh / day.
We can also over-insulate, to reduce the losses of about 4 times for 160 mm of glass wool http://www.apper-solaire.org/Pages/Fich ... /index.pdf

[PVresistif]

to consume less see the following website:
http://osenon.free.fr
among others the electrical heating 90% yield, the tariff night, the free insulation, taxes on the elec ... etc