Fresh indoor air, quietly
Belgians spend 15+ hours/day indoors. Moisture, CO₂ and VOCs build up fast in well-insulated homes. Ventilation is not optional.
Free on-site visit 015 62 70 80System C vs System D
System C — demand-controlled extract
Fresh air enters through self-regulating vents in windows or walls; humid/stale air is extracted from kitchen, bathrooms and toilets. Best for renovations where a ducted supply is impractical.
- Lower investment: €3,000 – €6,000
- No heat recovery — some heat loss in winter
- Good for medium-insulated homes
System D — balanced with heat recovery
Mechanical supply and extract — incoming fresh air is pre-heated by outgoing stale air in a heat exchanger (80-90% efficient). Essential for low-energy homes and heat pumps.
- Investment: €6,000 – €12,000
- Saves 800-1,500 kWh/year in winter
- Subsidy up to €1,200 (Mijn VerbouwPremie)
Why ventilation matters
Moisture & mould
Showering, cooking and breathing produce ~10 liters of water per day in a family home. Without ventilation, mould is inevitable.
Air quality & health
CO₂ above 1000 ppm impairs concentration and sleep. VOCs from furniture and cleaning products accumulate in sealed homes.
Combustion safety
Gas boilers, water heaters and stoves need proper air supply. We deliver legally compliant ventilation in the rooms where they sit.
Ready to start your project?
Free on-site visit within 7 days. No obligation.
Book free visit 015 62 70 80