The verdict of Ademe (the Environment and Energy Management Agency) is final: heating represents 67% of a household's energy consumption, against 10% for hot water production. sanitary.

To lower the bill, it is therefore necessary to choose this equipment wisely.

Wood, the cheapest energy

To heat yourself at a lower cost, there is no secret: you have to invest up front.

If the purchase price can put off more than one, it will indeed be quickly amortized thanks to a high yield and a reduced invoice.

However, according to Ademe, it is wood heating which remains the most economical.

In this regard, it is better to choose pellet systems, which are the most efficient.

At the top of the list, the stove is a very good investment since, with an installation cost ranging from 1,500 to 6,000 euros, it will offer an efficiency of up to 90% and will limit the annual bill to a few hundred euros.

For its part, the boiler running on wood pellets reaches between 75 and 105% of efficiency, according to Ademe.

But it takes between 4,000 and 10,000 euros to purchase.

A variable cost / efficiency ratio

In the boiler category, gas or oil condensing models offer good results, with an efficiency estimated between 89 and 92%, according to Ademe.

All for an initial cost of less than 5,000 euros.

Be aware, however, that your heating bill will easily pass the 1,000 euros per year mark in this case.

Conversely, the geothermal heat pump and the solar boiler are two pieces of equipment which ensure a very limited addition to use.

The other side of the coin: their purchase price, which easily exceeds 10,000 euros.

You must therefore be sure to stay in the premises for many years to make this investment profitable.

Clues to navigate

In order to help consumers navigate between the different heating systems and among the models that exist in each category, the legislation requires manufacturers to use energy labels.

Any heater with an output of less than 70 kW must display one.

Only wood-fired boilers and electric radiators are exempt.

In detail, a first energy label applies to heating generators (gas, oil, electric or heat pump boilers).

It then varies from A ++ to G depending on the performance level of the device.

A second combined energy label applies to installations made up of several items of equipment.

In this case, it is a question of informing the consumer about the energy efficiency of the main generator (such as a boiler, for example) and of the other devices that accompany it, such as a control system, a water heater. hot water or solar panels.

Finally, note that certain signs of quality make it possible to identify the most efficient equipment.

In terms of wood heating, it is in particular the Green Flame 6 and 7 stars label which guarantees high energy efficiency and limited air pollution.


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  • Housing

  • House

  • Wood

  • Heater

  • energy

  • Budget