Buying a Thermal Colander: Advantages and Disadvantages

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3/6/2025

Buying a thermal colander, a home classified F or G at Energy Performance Diagnosis (DPE), raises a lot of questions. These goods, characterized by high energy consumption, are considered to be colanders energy and are subject to restrictions under the Climate and Resilience Law. Before embarking onBuying a colander, it is essential to weigh the pros and cons and to anticipate the necessary work.

une liste d'élément à connaitre avant d'acheter une passoire thermique
What you need to know if you want to buy a thermal strainer

What is a thermal strainer?

One thermal colander is a home whose insulation is insufficient, leading to an energy consumption greater than 450 kWh/m²/year. This means that the home loses heat quickly, making its heating system inefficient. These homes are responsible for high emissions of greenhouse gases and require significant energy renovation work.

Les F and G classified homes are increasingly subject to regulatory restrictions. Since 2023, some have been banned from renting, and by 2028, these prohibitions will be expanded. This is why it is essential to properly assess the costs and aids available beforeinvest in a thermal strainer.

Benefits of Buying a Thermal Colander

Attractive Purchase Price

Les F or G classified homes are often sold at a price well below the market. This discount can represent an opportunity for those who want invest in a thermal strainer. On average, these homes are 15 to 25% cheaper than those with a better DPE energy performance.

Financial Assistance for Renovation

The purchase of an energy-intensive home allows access to several assistance systems to finance energy renovation work :

  • MaPrime Rénov' : Grant intended to finance the insulation, heating or ventilation of the home.
  • Eco-loan at zero interest rate (eco-PTZ) : Allows you to borrow up to €50,000 without interest to finance the work.
  • Energy Saving Certificates (CEE) : Aid offered by energy suppliers for work related towall insulation and from the roof.
  • Reduced VAT rate (5.5%) : Applied to energy renovation work carried out by a certified professional.

These aids make it possible to reduce the cost of renovations and to improve the profitability of a Buying a colander.

Valorization of the property after work

Once renovated, a home with an F or G rating can pass a D or C grade on the DPE scale, which increases its value. A renovated property is more easily resold and can generate a better rental yield. The energy transition The current situation is increasingly encouraging investors to favour renovated homes, thus increasing their attractiveness on the market.

Disadvantages of Buying a Thermal Colander

Cost and Extent of Work

Les energy renovation work can represent a substantial budget, especially forwall insulation, the installation of a new heating system and the replacement of windows. According to the Agency for Ecological Transition (ADEME), the complete renovation of an energy-intensive home can cost between 30,000 and 60,000€.

In addition, it is often necessary to carry out work in several steps in order to optimize energy performance and maximize energy savings.

Regulatory Restrictions

La Climate and Resilience Law progressively prohibits the rental of classified housing G then F. This means that a buyer will have to undertake renovations before being able to rent his property. It is therefore essential to assess the cost of work before buying.

High energy consumption

Without immediate renovation, a thermal colander results in very high heating bills, especially in small areas where heat losses are greater. This can increase the occupants' budget and make rental management more complicated.

How do you renovate a thermal strainer?

1. Conduct an Energy Audit

Before starting work, it is advisable to carry out an energy audit. This step makes it possible to precisely identify the thermal weaknesses housing and priority improvements. This audit is carried out by a qualified professional, which analyzes theisolation, the heating system, the ventilation and the energy equipment in place.

The energy audit provides a detailed road map work to be undertaken. It also helps to define a Provisional budget and to anticipate the financial aid available. In addition, this inventory makes it possible to avoid costly mistakes and to ensure optimal energy gain after the work.

2. Prioritize Isolation

Insulation work must be carried out as a matter of priority, because it allows limit heat loss and to optimize energy savings. For this, it is recommended to use high-performance insulating materials, like the rock wool, the glass wool, or even biobased insulators.

By improving insulation, the indoor temperature becomes more stable. Thermal comfort is increased, and heating needs are reduced. This makes it possible to lower energy bills and limit the carbon footprint of housing. Finally, financial assistance exists for this work, such as the Reduced VAT Or the Energy Saving Certificates (CEE).

THEwall insulation, roof and floors is essential to reduce heat loss and improve the DPE energy performance. Without effective insulation, even a heating system efficient will be ineffective.

3. Installing an Efficient Heating System

One efficient heating system is essential to maximize energy savings and improve the DPE ranking. After insulation, it is crucial to choose modern and efficient equipment.

The replacement of a dilapidated boiler By one biomass boiler Or a air-to-water heat pump offers a more ecological and economical solution. This equipment consumes less energy and reduces greenhouse gas emissions. In addition, they ensure better thermal comfort by distributing homogeneous heat in the home.

The installation of a new heating system can be financed thanks to Energy premiums, to zero-interest eco-loans, as well as Energy Saving Certificates (CEE). It is recommended to use an RGE certified professional to ensure eligibility for aid and an installation that complies with environmental standards.

Finally, for optimal efficiency, it is advisable to combine the heating with a intelligent control system, like a programmable thermostat. This makes it possible to adjust the temperature according to needs and to limit energy waste.

Replace an outdated boiler with a biomass boiler Or a air-to-water heat pump makes it possible to reduce energy consumption. This equipment is often financially supported by devices like the Prime energy.

4. Improving Ventilation

A poorly ventilated home accumulates humidity, which degrades insulation and promotes thermal losses. One controlled mechanical ventilation (VMC) is essential for a renovated home.

Conclusion

Buy a thermal colander Presents pros and cons. The attractive price And the financial aid may appeal to investors, but you have to anticipate the cost of work and regulatory restrictions. One energy audit detailed and rigorous planning make it possible to optimize the investment and improve the energy performance good.

Do you need advice to find the apartment of your dreams? Call on a real estate hunter to help you buy a thermal strainer that will be easy to renovate. Discover our services here.

❓ FAQ

1. Is it profitable to buy a thermal strainer?

Yes, provided that the necessary work is anticipated and that the financial assistance available is available to reduce the cost of renovation.

2. What help can you get to renovate a thermal colander?

Owners can benefit from MaPrime Rénov', of EEC, of zero interest loan And of the Reduced VAT.

3. Are thermal strainers forbidden to rent?

Since 2023, homes classified G consuming more than 450 kWh/m²/year are forbidden to rent. The law provides for gradual bans for classes F and G by 2028.

4. What are the priority works to improve the DPE of a home?

THEwall insulation, roof and windows is the priority. Then, it is necessary to modernize the heating system and improve the ventilation.

5. Can you buy a thermal strainer with a zero interest loan?

Yes, under certain conditions. Les zero-interest eco-loans make it possible to finance up to €50,000 in energy renovation work.

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