A modern house is not just about an aesthetic choice of coverings or furniture. Technical decisions regarding heating, electrical distribution, and ventilation determine the actual comfort and the property value over ten to twenty years. We review the equipment categories that truly structure a high-performance habitat.
Electrical circuit and charging station: the NF C 15-100 as a foundation
The 2024 edition of the NF C 15-100 now treats electric vehicle charging as a specialized circuit with dedicated protection. A standard household outlet in a garage does not replace a reinforced outlet or a properly sized charging station. Ignoring this point during design exposes one to a complete overhaul of the electrical panel a few years later.
This standard also imposes a minimum number of outlets per room, dedicated circuits for high-consumption appliances (cooking hob, washing machine, dryer), and an appropriate differential device. We recommend planning for at least one additional circuit at the panel to anticipate the future addition of a heat pump or a thermodynamic water heater.
The sizing of the electrical network remains the least visible aspect during a visit, but it determines the house’s capacity for evolution. An undersized panel limits all other equipment, no matter how efficient they are. Consulting the equipment available at Mister House allows for a concrete visualization of the devices whose power supply should be anticipated from the design phase.
Low-carbon heating: heat pump and the planned end of gas
The RE2020 has excluded gas boilers as the main heating source for new individual houses since 2022. From 2025, this restriction will extend to new collective housing. The ministry also plans a restriction on gas, including as a backup, for new housing starting in 2027.
For a construction or major renovation project, reasoning solely in terms of installation cost is a mistake. Gas remains cheaper to install, but its regulatory framework tightens each year. An air-water heat pump or a connection to a district heating network offers a better trajectory in the medium term.
Criteria for choosing a heat pump
- The seasonal performance coefficient (SCOP) reflects the actual yield over the year, not just under laboratory conditions
- The noise level of the outdoor unit must comply with the emergence thresholds set by the public health code, under penalty of disputes with neighbors
- Compatibility with low-temperature underfloor heating increases performance and perceived thermal comfort
- Sizing by a thermal engineering office avoids oversizing, which leads to short cycles and premature wear of the compressor
Mechanical ventilation: a comfort feature often overlooked
In a very airtight modern house, indoor air quality entirely depends on mechanical ventilation. High-performance joinery and enhanced insulation eliminate natural infiltrations that once ensured minimal air renewal. Without a properly sized mechanical ventilation system (VMC), humidity and indoor pollutants accumulate.
The double-flow VMC remains the most coherent solution in a new RE2020 construction. It recovers heat from the extracted air to preheat the incoming air, reducing the heating load. Its maintenance (filters, heat exchanger) directly conditions its long-term performance.
We observe that many project owners underestimate this aspect. The budget allocated to ventilation represents a fraction of the overall cost, while its impact on daily comfort and the durability of the building (condensation, mold) is considerable.
Kitchen and bathroom layout: the technical choices that matter
The kitchen concentrates the majority of specialized circuits in a house. Induction hob, oven, dishwasher, extractor hood: each appliance requires its own circuit breaker. Planning the precise placement of equipment before the installation of ducts avoids extensions and power strips, which are sources of overload and electrical risk.
In the bathroom, the standard imposes safety volumes around the shower and bathtub. The choice between a thermodynamic water heater and a traditional tank is not solely based on the initial budget. The thermodynamic option consumes significantly less but requires sufficient air volume to operate (a space of at least twenty cubic meters that is not heated is recommended).
Faucets and water networks
Thermostatic mixers limit the risk of burns and stabilize the usage temperature, a point often overlooked in family homes. Switching to PEX (cross-linked polyethylene) for water networks simplifies maintenance and eliminates the corrosion risks associated with aging copper.
Home automation and energy management: distinguishing gadgets from useful tools
A programmable connected thermostat is the first worthwhile home automation investment. It adjusts the heating setpoint to the actual occupancy times of the home. Centralized management systems (lighting, shutters, heating) are only useful if the communication protocol is open and compatible with multiple manufacturers.
- Prefer open protocols (Zigbee, Z-Wave, Matter) over proprietary ecosystems that lock the user in
- Install a sub-meter for each major consumption point to identify deviations
- Automating roller shutters on the south facade helps reduce summer solar gains without active air conditioning
Home automation has value only if it meets a specific and measurable use. Stacking sensors without an operational strategy creates complexity, not comfort. Each added connected device must justify its usefulness through savings, increased safety, or a concrete simplification of daily life.
The choice of equipment for a modern house hinges on technical decisions made upstream, often even before laying the first block. A well-sized electrical circuit, a heating system compatible with regulatory trajectories, and ventilation suited to the building’s airtightness form the triptych upon which everything else relies.
