Choosing equipment for the home is not just about selecting beautiful objects. Each appliance, each light fixture, and each ventilation system contributes to both daily comfort and the energy performance of the home. Since the decree of June 11, 2026, the energy performance diagnosis (DPE) includes the share of renewable energies produced on-site and the ability of the home to respond to external signals such as management or load shedding. Therefore, the choice of equipment piece by piece has direct consequences on the energy class, resale value, and the possibility of medium-term rental.
Energy performance and equipment: what the reformed DPE changes
Before thinking about decor, one must understand a recent constraint. The DPE in its version applicable from 2027 becomes much more detailed regarding the nature of the installed equipment. An electric inertia radiator controlled by a connected thermostat is no longer evaluated in the same way as a traditional convector.
Homes heated with electricity change status in this new calculation. A high-performance electric heating system combined with good insulation can now achieve a correct energy class, where the old scale systematically penalized it. The choice of equipment modifies the energy class of the home, which goes far beyond aesthetic considerations.
By browsing the equipment on iDéco Maison, one quickly notices that manufacturers are increasingly incorporating controllable features into their ranges: connected radiators, automatically dimmable lighting, humidity-regulated ventilation. These products meet the dual requirements of comfort and regulatory compliance.
Lighting room by room: adapting color temperature to use
Lighting is the equipment that most radically transforms the ambiance of a space, for a relatively low cost. The key lies in a simple technical concept: color temperature, measured in kelvins.
A warm light (around 2,700 K) is suitable for the living room and bedroom. It promotes relaxation and gives natural materials (wood, linen, terracotta) a warmer appearance. A neutral light (3,500 to 4,000 K) works better in the kitchen and bathroom, where visual precision is important for cooking or applying makeup.
- Living room: favor indirect lighting (wall sconces, adjustable floor lamps) with a main dimmable source to modulate intensity according to the time of day
- Kitchen: combine a ceiling light with neutral light for the work surface and spotlights under the upper cabinets, ensuring that the color rendering index (CRI) exceeds 80 to see food in its true colors
- Bathroom: choose fixtures rated at least IP44 (mandatory waterproofing standard near water points) with neutral to cool light around the mirror
- Bedroom: a wall-mounted reading light with an articulated arm is a better replacement for a bedside lamp and frees up the nightstand
Good lighting relies on at least two light sources per room, at different heights. A single central pendant light flattens the volumes and creates unflattering shadow areas.
Furniture and living room layout: consider circulation before aesthetics
The living room often concentrates the most costly layout mistakes. A sofa too large for the room, a coffee table blocking the passage, a poorly proportioned TV unit. Before choosing a style, one must measure the circulation space.
The practical rule: maintain at least 60 cm of clear passage between each piece of furniture. Below this, the room appears cluttered even with little furniture. Beyond 90 cm, the space seems empty and unwelcoming.
The choice of materials for furniture has a direct impact on maintenance and durability. A boucle fabric sofa withstands friction better than smooth velvet but accumulates more dust. The upholstery of a sofa should be chosen according to lifestyle, not trends. A household with young children or pets benefits from removable and machine-washable covers.
For storage, closed furniture (buffets, dressers) maintains an orderly appearance with less effort than open shelves. Open shelves, on the other hand, allow for the display of a few chosen objects and visually enlarge the room if not overloaded.
Ventilation and thermal comfort: the equipment we don’t see
The most determining equipment for the comfort of a room is often invisible. Ventilation is one of them. A humidity-regulated mechanical ventilation system (VMC) adjusts its flow to the humidity level of each room. In the bathroom, it speeds up after a shower. In the bedrooms, it maintains sufficient air renewal during the night.
Poor ventilation degrades both air quality and the condition of the coverings. Mold on tile joints, peeling paint, persistent odors: these issues are less about decor than about under-dimensioned or poorly maintained technical equipment.
The new DPE explicitly values high-performance ventilation systems. Replacing a self-regulating VMC with a type B humidity-regulated model represents a moderate investment that improves the comfort felt in each room, reduces heating consumption related to air renewal losses, and can improve the diagnostic rating by one letter.
- Check the condition of extraction vents (kitchen, bathroom, WC) at least once a year
- Never obstruct air inlets located above windows, even in winter
- Have the VMC unit checked by a professional every three to five years
Enhancing a room involves both what is installed on the walls and what is integrated into the ceiling or behind a partition. Technical equipment determines the longevity of visible decoration. A beautiful lime plaster applied in a poorly ventilated bathroom will degrade in a few seasons. The same plaster, combined with a properly sized air extraction system, will maintain its appearance for years.
