VMC installation in Wavre

VMC Installation in Wavre

A sealed envelope without controlled ventilation means a house that can no longer naturally expel water vapor, CO2, and pollutants produced by its occupants. In Wavre, where energy renovations make homes increasingly airtight, VMC is the essential complement to insulation. Without it, air quality deteriorates and humidity settles where it is not visible.

Avenir Rénovations integrates ventilation into every renovation project in Wavre: single flow, double flow, or humidity-regulating systems, depending on the type of housing and the level of insulation aimed for, in compliance with Walloon PEB requirements.

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Why choose Avenir Renovations?

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Why is ventilation essential in Wavre?

Ventilation replaces stale air with fresh air in a controlled manner. It is both a physiological and technical necessity.

Indoor air quality

A well-occupied home produces water vapor (from cooking, bathrooms, breathing), CO2, and pollutants from building materials. Without sufficient air renewal, these pollutants accumulate and quickly exceed recommended health thresholds. Headaches, fatigue, and sleep disturbances can be linked to inadequate indoor air quality.

Mold and condensation prevention

Excess moisture produced in a home must be expelled. Without mechanical ventilation, it condenses on cold surfaces (thermal bridges, window frames, wall corners) and generates mold that degrades materials and health. In an insulated home (airtight envelope), mechanical ventilation is the only reliable way to manage this moisture.

Regulatory obligations and energy performance certificate

In Walloon Region, any energy renovation must comply with the ventilation requirements of the Walloon Housing Code. A well-insulated but unventilated home may not validate the targeted energy performance certificate. Avenir Rénovations integrates ventilation from the project's design to ensure regulatory compliance.

How we install a VMC in Wavre

How we install a VMC in Wavre

The installation of a VMC in an existing home requires planning to discreetly integrate the ducts into the living space.

The VMC systems we install in Wavre

The choice of system depends on the type of housing, level of insulation, and budget.

  • Mechanical extraction in wet rooms (kitchens, bathrooms, toilets, laundries)
  • Self-regulating or hygro-regulating air inlets in living areas
  • Ventilation flow modulated according to the humidity level of the air
  • Discreet installation, maintenance limited to an annual cleaning of the vents

The single-flow VMC is the most common solution in Belgian homes. It is economical to install and use, and sufficient for the majority of renovated homes in Wavre.

  • Mechanical extraction and supply with air-to-air heat exchanger
  • Recovery of 80 to 90% of the heat from the extracted air
  • Filtration of incoming air: ideal for allergy sufferers
  • Mandatory for passive or very low energy homes

The double-flow VMC is the most efficient system. Coupled with good envelope insulation, it reduces heating needs while maintaining optimal air quality. The investment is higher but the energy return is real.

What is the price of a VMC installation in Wavre?

The budget varies depending on the type of system and the size of the home. Indicative ranges in Belgium, VAT included.

Type of work Price indication including VAT
Hygroregulated single flow VMC (120 m² house) 1,500 to 3,000 €
Double flow VMC with heat recovery (120 m²) 4,000 to 8,000 €
Double flow VMC with heat recovery (200 m²) 7,000 to 14,000 €

A precise quote is established after a visit and analysis of the home. For a 120 m² house in Wavre, the hygroregulated single flow VMC is the minimum investment required for PEB compliance during an energy renovation. The double flow VMC is recommended for projects aiming for low energy or passive labels.

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Breathe better in your renovated home in Wavre

In a well-insulated home, mechanical ventilation is not an option: it is the link that completes the renovation. Integrate it from the project's design to avoid having to rework all the ducts later. Avenir Rénovations analyzes your situation and sizes the appropriate system.

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Mechanical ventilation and energy renovation in Wavre: an integrated approach

In Wavre, most ambitious energy renovation projects combine envelope insulation, heating system replacement, and mechanical ventilation installation. These three interventions form a coherent system. Insulating without ventilating creates an airtight box where air deteriorates. Ventilating without insulating heats the air that is immediately expelled. Avenir Rénovations designs these projects holistically, integrating ventilation from the earliest architectural decisions.

Maintenance of mechanical ventilation: what to do

A mechanical ventilation system requires minimal but regular maintenance to remain effective. Extraction vents should be cleaned once or twice a year to prevent dust accumulation that reduces airflow. The filter of the central unit (on dual-flow systems) should be replaced every six to twelve months according to the manufacturer. Avenir Rénovations provides maintenance instructions upon commissioning and can offer an annual maintenance contract if desired.

Mechanical ventilation and acoustics: limiting noise disturbances

A poorly sized or improperly installed mechanical ventilation system can generate noise disturbances: humming from the central unit, whistling from vents with too high a flow rate, noise transmission through ducts. Avenir Rénovations addresses acoustics from the design stage: soundproofed central unit, acoustically insulated ducts, limited airspeed in vents, large-radius bends to avoid turbulence. The result is ventilation that you do not hear.

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VMC in Wavre: Frequently Asked Questions

Can a VMC be installed in an old house?

Yes. Avenir Rénovations installs VMCs in existing houses in Wavre from all eras and configurations. The integration of ducts is more complex than in new construction, but installation techniques in false ceilings, under floors, or integrated exposed ducts allow for handling the vast majority of situations without disproportionate demolition.

Is a VMC necessary if the house has poorly sealed frames?

Old poorly sealed frames ensure unintentional natural air renewal. But this renewal is uncontrolled: it varies with the wind, creates drafts, and generates thermal losses. If you replace your frames with modern triple-glazed windows, the VMC becomes essential from that moment on. Anticipating its installation at the same time as the frame replacement is more economical and avoids reopening finishes.

Install a VMC in Wavre with Avenir Rénovations

A well-sized VMC is forgotten: it runs silently, renews the air, and protects materials without any intervention on your part. Avenir Rénovations conducts the ventilation diagnosis of your home in Wavre, proposes the solution adapted to the existing configuration, and coordinates the installation with other trades if work is ongoing. Free technical visit, detailed quote by item.

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