Apr 12, 2026
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Heating renovation in an old house: which effective solutions to choose?

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Heating renovation in an old house: which effective solutions to choose?

In the current context where energy is becoming increasingly expensive, many French households are looking for the best heating solution for this winter. Choosing an economical and effective solution to face the cold is no easy task, especially when it comes to renovating the heating in an old house. There are many options available to you, but which ones are truly worth considering? This is what we will explore in this article, by comparing the different alternatives available, from the most classic to the most innovative, in order to guide you towards the choice that best suits your needs.

Why insulate your old house before changing the heating?

Old houses often present challenges in terms of insulation. Indeed, without prior insulation work, even the most efficient heating system will not be able to adequately meet the thermal comfort needs of your home. Heat loss generally occurs at the level of single-glazed windows, poorly insulated doors, and walls or attics that are insufficiently protected. As a result, energy savings are compromised.

A complete energy audit may be necessary to establish a relevant diagnosis of the thermal state of your home. It will inform you about the areas to strengthen. Moreover, good insulation reduces your energy consumption and improves the efficiency of the heating systems you plan to install.

Here are some tips to enhance the insulation of your home:

  • Replace single-glazed windows with double or triple-glazed models.

  • Insulate the attics and walls from the inside or outside.

  • Change exterior doors for models that are more airtight.

discover the best solutions for renovating the heating in an old house. optimize comfort and reduce your energy bills with practical advice and effective options suited to your home.

Impact of insulation on the choice of heating

Once your house is insulated, you will be able to consider replacing your heating system with peace of mind. This will allow you to welcome devices such as heat pumps or wood boilers, whose efficiency and performance are optimal in a well-insulated environment.

The different heating solutions for old houses

When it comes time to choose a heating system for your old house, there are several options available to you. Each of these options has its advantages and disadvantages. Here is an overview of the most common:

Gas heating

Gas heating remains a popular solution in France. With recent appliances, such as condensing boilers, this option is both economical and efficient. Notably, brands like De Dietrich, Bosh, and Ferroli offer efficient models that achieve high yields.

Advantages:

  • Operating costs are generally lower than electricity.

  • Quick and comfortable heat rise.

  • Possibility of benefiting from energy bonuses for the installation of high-performance boilers.

Electric heating

Electric heating is often seen as costly, but recent innovations, such as heat pumps, show that it can also be a viable option, especially in well-insulated houses. Modern heating systems, such as models from Thermor and Atlantic, can offer interesting energy efficiency.

Advantages:

Wood pellets

For those looking for an economical and sustainable alternative, heating with wood pellets stands out. With high energy efficiency and a less fluctuating fuel cost, it represents a wise choice. Equipment from brands like Chaffoteaux and Saunier Duval offer suitable solutions for old houses.

Advantages:

  • Fuel costs are lower than fossil energy.

  • Less ecological impact due to the use of a renewable resource.

  • Bonuses and subsidies for installation.

Type of heating

Estimated installation cost

Annual operating cost

Energy yield

Gas

€2500 - €6000

€800 - €1200

90 - 110 %

Electric

€1000 - €3000

€1200 - €1800

80 - 100 %

Wood pellets

€3000 - €8000

€600 - €1000

85 - 95 %

Financial aid for heating renovation

Renewing your heating system can represent a significant investment. Fortunately, the government and some organizations offer financial aid. Households can thus benefit from subsidies that lighten the overall cost of the work.

MaPrimeRénov'

MaPrimeRénov' is accessible aid for homeowners wishing to replace their old heating system. The amount granted varies according to income and the type of heating installed, favoring renewable energy systems. For example, a wood pellet boiler may qualify for a grant of €5,000 for low-income households.

Zero-Interest Eco Loan

The zero-interest loan allows financing for the energy transition provided the work is carried out by a certified professional. This is an interesting option for households with a certain level of resources.

Heating Boost Bonus

To encourage the replacement of oil or coal heaters, the Heating Boost Bonus offers increased amounts based on the energy performance of the new device.

Type of heating

MaPrimeRénov' (in €)

Heating Boost Bonus (in €)

Geothermal heat pump

€11,000

€1,200

Wood pellet boiler

€5,000

€1,500

Conclusion on the choice of heating system

In light of rising energy costs, choosing an efficient heating system suitable for your old house is essential. By insulating your home first and using available aids, you can maximize your savings. Don’t forget to consider your specific needs, desired thermal comfort, but also your budget.

discover the best solutions for the renovation of heating in your old house. optimize your comfort and energy efficiency with our practical advice and expert opinions.

FAQ

What are the most economical heating solutions?

Wood pellets and condensing gas heating systems offer an interesting long-term value for money.

Should I insulate my house before changing heating?

Yes, good insulation is essential to maximize the efficiency of your new heating system.

What aids are available for replacing heating?

MaPrimeRénov', the Zero-Interest Eco Loan, and the Heating Boost Bonus are among the main aids you can apply for.

Is electric heating a good option for old houses?

Yes, provided that the house is well insulated, electric heating can be effective and economical with modern systems such as heat pumps.

Which heating devices come with a warranty?

Most modern boilers, heat pumps, and wood pellet devices come with a manufacturer's warranty, but it's important to check the specific details at the time of purchase.