The best investments to improve your home's energy performance

Editor:

Benjamin Hers

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Updated :
24/6/2025

The best investments to improve your home's energy performance

The PEB (Building Energy Performance) is a crucial indicator that assesses the energy efficiency of your home. Improving your PEB rating reduces your energy bills, increases the value of your property, and improves your daily comfort. If you want to optimize your home's PEB, here are the best investments to consider:

1. Insulation: the top priority for high-performance energy efficiency

Insulation is the basis for good energy performance. A poorly insulated house loses heat in winter and coolness in summer, leading to excessive energy consumption. The most critical areas to insulate are the roof, walls, and floor. This work is often subsidized by regional authorities, which reduces the investment costs.

2. Replacing windows for better energy performance

Windows are a major source of energy loss. Installing double-glazed windows or, ideally, triple-glazed windows helps to retain heat and significantly improve your PEB score. High-quality window frames, combined with high-performance glazing, also enhance sound insulation and reduce heat loss.

3. Installing solar panels: a cost-effective and environmentally friendly solution

Solar panels, whether photovoltaic or thermal, are an excellent investment for improving the energy performance of a home. They enable you to generate green energy on site, reducing your dependence on the traditional power grid. By generating your own electricity, you can lower your bills while limiting the environmental impact of your home. Discover our solar panel solutions.

4. Opt for a high-efficiency boiler

Replacing an old, energy-inefficient boiler with a condensing boiler or heat pump can significantly improve your home's energy efficiency. These modern systems consume less fuel while producing more heat, thereby reducing your energy consumption and improving your PEB score.

Heat pumps are particularly advantageous because they use heat from the air or ground to heat your home, making them much more environmentally friendly. Learn more about our heat pumps.

5. Controlled ventilation (CMV): for healthy and energy-efficient air

A well-insulated house must also be well ventilated to prevent moisture problems and ensure good air quality. Installing a controlled mechanical ventilation (CMV) system ensures optimal air renewal while recovering heat from stale air. Dual-flow CMV systems help improve the PEB by limiting energy losses.

6. Smart thermostat and home automation: optimized energy management

Installing a smart thermostat allows you to better manage your heating consumption by programming time slots that suit your lifestyle. This optimizes the heating of your home without wasting energy. Some home automation systems even allow you to remotely control your energy appliances, giving you total control over your consumption.

7. Replace energy-intensive appliances

Household appliances account for a significant portion of a household's electricity consumption. Choosing A+++ energy-rated appliances (refrigerators, washing machines, dishwashers, etc.) can save energy and improve the overall energy performance of your home.

Conclusion: Invest in sustainable and economical energy performance

Improving your home's energy efficiency is both an ecological and economic investment. Better insulation, an efficient heating system, solar panels, and modern energy equipment will allow you to reduce your carbon footprint while increasing the value of your property. Regions often offer subsidies for these energy renovation projects, making the investment even more accessible.

Want to reduce your energy consumption and enjoy the benefits of renewable energy? We Green offers tailored solutions such as solar panels and heat pumps. Request your quote today and take the first step towards a greener home! 🌱

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