The individual house market is undergoing a period of technical transition. Between the tightening of energy requirements driven by RE2025 and the overhaul of the electrical standard NF C 15-100 in September 2025, equipment choices are no longer just a matter of taste or budget. Every decision, from the heating system to the arrangement of outlets, impacts the overall performance of the building for several decades.
RE2025 and carbon thresholds: what the new limits change for equipment
The environmental regulation RE2025 sets a maximum Construction IC of 530 kg CO₂e/m² and a maximum Energy IC of 160 kg CO₂e/m²/year for individual houses. These thresholds, lower than those of RE2020, reduce the leeway in choosing materials and energy systems.
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In practice, a heat pump or a double-flow ventilation system only reaches its full comfort potential in a very well-insulated building, with materials suited to the local climate. The texts emphasize the central role of bio-based materials (wood, hemp, straw, rammed earth), which are effective for summer comfort, humidity regulation, and acoustics. Equipment can no longer be considered separately from the envelope: the two form a system.
To compare available solutions and identify ranges compatible with these constraints, consulting equipment on Direct Home allows for cross-referencing product categories with current regulatory requirements.
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Electrical standard NF C 15-100: anticipating the number of power points
The overhaul of the NF C 15-100 standard, which comes into effect in September 2025, has a direct impact on the design of a modern house. It requires the provision of more power points for small appliances, multimedia, and connected devices.
The goal is concrete: fewer extension cords, better safety, and above all, increased modularity of living spaces. A kitchen that had only three dedicated outlets ten years ago must now plan for many more to accommodate current uses (robot, coffee maker, tablet, connected speaker).
Points to check before the structural work
- The number of outlets per room, particularly in the kitchen and office, which concentrate daily appliances
- The location of communication boxes (fiber, home network) to avoid rewiring after delivery
- The compatibility of the electrical panel with a future home automation installation or energy management system
Anticipating these points from the design phase avoids costly corrective work. Field feedback shows that post-delivery electrical rewiring is among the top sources of dissatisfaction for new homeowners.
Heating and hot water production: thinking in total cost
The choice of heating method remains the most structuring equipment decision. Regulations require the use of at least one renewable energy source in individual houses. This often involves a thermodynamic water heater or a solar water heater for domestic hot water, and a heat pump or wood heating for the main heating system.
The available data does not allow for the designation of a universally superior system. Local climate, insulation level, living area, and lifestyle habits affect the relevance of each solution. A very efficient air/water heat pump in a temperate zone loses efficiency in regions with harsh winters.
Selection criteria beyond purchase price
The purchase price of heating equipment represents only a fraction of the actual cost. The operating cost over ten or fifteen years, the price of spare parts, the availability of a local maintenance network, and the estimated lifespan weigh equally in the balance.
- The coefficient of performance (COP) for a heat pump, which indicates the ratio of energy produced to energy consumed
- The Flamme Verte label for wood stoves and inserts, which guarantees a minimum efficiency and contained particulate emissions
- Compatibility with home automation control, which allows for adjusting the temperature room by room according to occupancy schedules
Summer comfort and ventilation: an underestimated angle in equipment choice
Repeated heatwaves have made summer comfort a standalone selection criterion. Bio-based materials, due to their thermal phase shift capacity, delay the penetration of heat into the building by several hours. This is an advantage that traditional synthetic insulators do not replicate as effectively.
Double-flow mechanical ventilation, often perceived as a simple air renewal equipment, plays a key role in passive thermal regulation. By recovering the calories (or coolness) from the extracted air, it reduces dependence on active air conditioning and maintains a more stable indoor temperature.
Field feedback varies on the noise generated by certain models of double-flow MV systems. The positioning of the unit, the quality of the ducts, and the noise level stated by the manufacturer deserve careful verification before any order. A high-performing but noisy system often ends up turned off by its occupants, negating its benefits.
Joinery and acoustic insulation: little visible technical trade-offs
The choice of external joinery (windows, sliding doors, doors) has a direct impact on thermal and acoustic insulation. Triple glazing, long reserved for very cold climates, becomes relevant in areas exposed to road or rail noise, regardless of the desired thermal performance.
However, triple glazing reduces free solar gains in winter compared to high-performance double glazing. The orientation of each opening should guide the choice: triple glazing to the north or on facades exposed to noise, reinforced insulation double glazing to the south to capture solar heat.
Interior joinery (distribution doors, glass partitions) also contributes to acoustic comfort between rooms. A standard hollow-core door allows a significant amount of sound to pass through, whereas a solid-core door significantly reduces transmission. This detail, rarely addressed during the design phase, makes a tangible difference in daily life.
The choice of equipment for a modern house is not limited to a product catalog. Each item interacts with the others: insulation conditions heating, ventilation conditions summer comfort, electrical standards condition home automation. Thinking in systems, from the beginning of the project, remains the only approach that holds over time.