Why choose Avenir Rénovations?
Why install a dual-flow ventilation system in your home?
A dual-flow ventilation system is a high-end ventilation system that not only removes stale air but also preheats or cools incoming air thanks to a heat exchanger. This technology limits heat loss, improves air quality, and contributes to a healthy and energy-efficient living environment.
A controlled air renewal
The dual-flow ventilation system ensures a constant renewal of indoor air while controlling the temperature of the fresh air. This operation guarantees optimal comfort and preserves the energy efficiency of your home.
A significant reduction in thermal losses
Thanks to its exchanger, the system recovers up to 90% of the heat contained in the outgoing air. This reduces your heating needs in winter and maintains a pleasant temperature in all seasons.
An improvement in indoor air quality
The integrated filters capture dust, pollen, and fine particles, providing a healthier indoor environment, particularly beneficial for people suffering from allergies or respiratory issues.
Steps for installing a double flow VMC in French-speaking Switzerland
The installation of a double flow mechanical ventilation system is a technical operation that requires precise know-how and strict adherence to Swiss ventilation and safety standards. This system, which ensures both the extraction of stale air and the supply of preheated fresh air via a heat exchanger, requires a perfectly sized installation to provide optimal efficiency. At Avenir Rénovations Suisse, we follow a rigorous protocol that guarantees performance, comfort, and long-term energy savings.
The different types of dual-flow ventilation systems available in French-speaking Switzerland
The choice of a dual-flow ventilation system must be adapted to the configuration of your home, your needs, and your energy goals. Several models are available on the Swiss market.
It consists of a central unit and a network of ducts distributing air to all rooms. This is the most efficient solution for individual houses or new buildings.
Ideal for renovations, it does not require a complete duct network. Each unit serves one or two rooms, reducing installation work.
This model includes a heat pump that further improves energy efficiency by preheating or cooling the incoming air. It is particularly interesting for low-energy houses.
How much does the installation of a double flow VMC cost in French-speaking Switzerland?
The investment depends on the type of system, the complexity of the work, and the options chosen. Here is an indicative estimate:
| Type of service | Price per m² (CHF) | Average total price (CHF) |
| Centralized double flow VMC | 120 to 160 | 8,000 to 12,000 |
| Decentralized double flow VMC | 100 to 140 | 3,000 to 6,000 |
| Thermodynamic double flow VMC | 150 to 200 | 10,000 to 15,000 |
These prices include the technical study, supply, installation, and adjustments. A personalized quote is necessary to obtain an accurate estimate based on your home.
Criteria for choosing your dual-flow ventilation system
In French-speaking Switzerland, the performance of a dual-flow ventilation system depends on several technical and environmental parameters. An informed choice optimizes comfort and savings.
The efficiency of the heat exchanger
The higher the efficiency, the more heat is recovered. High-end models achieve efficiencies above 90%, significantly reducing heating bills.
Electricity consumption
An efficient ventilation system must combine energy efficiency and low consumption. Certified devices with direct current motors offer an excellent performance-to-consumption ratio.
Noise level
The noise generated by the ventilation should remain low, especially if the unit is installed near bedrooms. Models with integrated acoustic insulation ensure discreet operation.
Options and accessories to optimize your dual-flow ventilation system
To enhance comfort, air quality, and the durability of your installation, several options can be integrated during installation or later. These additional features allow the system to be adapted to the specific needs of your household and local climatic conditions.
High-performance filtration
The installation of high-efficiency filters, capable of eliminating up to 99% of fine particles, ensures healthy indoor air, even in urban environments. This device is particularly recommended for allergic individuals, asthmatics, or those sensitive to air pollution. Effective filtration helps protect not only the health of occupants but also the longevity of the equipment by preventing premature clogging of the exchanger.
Automatic bypass
During the summer, the automatic bypass allows the heat exchanger to be bypassed to avoid heating the incoming air. This feature promotes natural cooling during the night or on cooler days while reducing the workload of your potential air conditioning system. It thus improves thermal comfort and helps reduce energy consumption.
Connected system
A connected system offers intelligent control of your dual-flow ventilation system, with real-time monitoring of air quality and energy performance. Through a mobile app or an online interface, you can adjust settings remotely, schedule time slots, or activate specific modes according to your lifestyle. This solution provides more comfort, flexibility, and precise control of your indoor environment.
Regulations for the installation of a dual-flow ventilation system in French-speaking Switzerland
In Switzerland, the installation of a dual-flow ventilation system must comply with several technical, environmental, and administrative rules. These requirements vary slightly by canton, but certain standards apply across the entire territory.
Compliance with SIA and OIBT standards
The installation of a dual-flow ventilation system must follow the prescriptions of the Swiss Society of Engineers and Architects (SIA) and the rules of the Ordinance on Low Voltage Installations (OIBT). This ensures electrical safety, energy efficiency, and compliance of the materials used.
Administrative authorizations
For an installation in a new building, the plans must integrate the system from the submission of the building permit. In renovations, a declaration may be necessary with the municipality, especially if facade openings are planned.
Cantonal energy requirements
Some cantons require that the ventilation system achieves a minimum efficiency or is coupled with energy-saving devices. The installation may also be eligible for subsidies under cantonal or federal programs such as the Buildings Program.
Maintenance and lifespan of a dual-flow ventilation system
A dual-flow ventilation system is a long-term investment, provided that regular maintenance is ensured. A well-maintained system retains its efficiency, guarantees good air quality, and prevents breakdowns.
Filter replacement frequency
Filters should be changed every 3 to 6 months, depending on the environment and usage. This operation prevents clogging of the heat exchanger and preserves the quality of the supplied air.
Cleaning of the heat exchanger and ducts
A complete maintenance including dusting and cleaning of the heat exchanger is recommended every 2 to 3 years. The ventilation ducts should be checked and cleaned if necessary.
Average lifespan
A well-maintained dual-flow ventilation system can operate efficiently for 15 to 20 years. Wear parts, such as fans or motors, may require intermediate replacement.
Specific advantages of dual-flow ventilation systems in French-speaking Switzerland
Installing a dual-flow ventilation system in French-speaking Switzerland offers particularly relevant benefits, given the significant climatic variations and demanding energy regulations. This system ensures optimal comfort while meeting the performance standards imposed in the region.
Optimization of thermal comfort in winter
The dual-flow ventilation system recovers up to 90% of the heat contained in the extracted air, allowing the incoming air to be preheated even when outside temperatures drop well below zero. This capability limits intensive heating use, reduces temperature fluctuations, and maintains a pleasant and consistent indoor atmosphere.
Reduction of energy costs
By significantly reducing heat losses associated with air renewal, a dual-flow ventilation system can generate annual heating savings of between 15 and 25%. This reduction in consumption translates into a lower energy bill and helps amortize the initial installation cost over a few years.
Property value enhancement
A property equipped with a dual-flow ventilation system meets modern standards of comfort, energy performance, and air quality, which increases its attractiveness in the real estate market. Potential buyers see this equipment as a sustainable investment, reducing operating costs and improving daily well-being.
FAQ on the installation of dual-flow ventilation systems in the French-speaking part of Switzerland
Is a building permit required to install a dual-flow ventilation system?
In the context of a renovation, a full permit is generally not required, but a declaration to the municipality may be mandatory if the work modifies the exterior appearance or structure of the building. In new construction, the dual-flow ventilation system must be integrated into the project submitted for building approval.
Can a dual-flow ventilation system be installed in an apartment?
Yes, but the configuration must be adapted to the structure and constraints of the building. In collective housing, decentralized or compact models are preferred as they limit heavy work, reduce the number of penetrations, and offer faster installation.
Does a dual-flow ventilation system work in summer?
Yes. Systems equipped with an automatic bypass disable heat recovery during the summer months, allowing incoming air to maintain its natural freshness. This function optimizes indoor comfort without additional reliance on air conditioning.
What is the noise impact of a dual-flow ventilation system?
Modern devices incorporate low-consumption fans and soundproof boxes to reduce noise to levels below 25 decibels in living areas. A professional installation, with particular attention to the acoustic insulation of ducts, ensures near-silent operation.
Can a dual-flow ventilation system be combined with other heating systems?
Absolutely. It can work in synergy with a heat pump, underfloor heating, or a condensing boiler to optimize the thermal management of the home. This coupling improves overall energy performance and maximizes long-term savings.
What are the annual maintenance costs?
Annual maintenance, including filter replacement, flow verification, and mechanical component checks, generally costs between 150 and 300 CHF. This preventive budget helps maintain a high level of performance and avoid more costly repairs in the long run.
Avenir Rénovations your partner in dual-flow ventilation system installation throughout the French-speaking part of Switzerland
The installation of a dual-flow ventilation system is much more than just comfort. It is a sustainable investment that improves air quality, reduces energy expenses, and enhances your property value. At Avenir Rénovations Suisse, we support you from the technical study to commissioning, including model selection and installation in accordance with Swiss standards.
Our teams operate throughout the French-speaking part of Switzerland: Geneva, Vaud, Fribourg, Neuchâtel, Valais, and Jura.
Contact us today to get a personalized quote and benefit from a tailored installation that meets your performance, comfort, and aesthetic requirements.
