A comprehensive renovation project in British Columbia, Canada, demonstrates the impact of holistic building modernization: By combining building envelope renovation, modern building systems, and decentralized ventilation, natural gas consumption in apartment buildings was reduced by up to 65 percent. In three of the four properties studied, LUNOS ventilation systems were a central component of the overall energy efficiency strategy.
The North American energy provider FortisBC has published the results of its large-scale “Deep Energy Retrofit Pilot Program.” The program’s goal was to identify practical ways to make existing apartment buildings energy-efficient for the future and drastically reduce greenhouse gas emissions. A leading, independent engineering firm supported the project by conducting precise measurements and verification.
Concrete Results from Real-World Applications
The scientifically monitored measurements show impressive savings in heating energy and CO₂ emissions. LUNOS systems were an integral part of the renovation plans for three of the four selected buildings:
Why Ventilation Technology Is Crucial in Energy-Efficient Renovations
When a building’s envelope is highly airtight as part of a renovation, the indoor microclimate changes fundamentally. Without a reliable ventilation system, valuable heat is lost when windows are opened manually, or moisture damage and mold growth can occur.
This is where the decentralised ventilation systems from LUNOS played a key role:
bis zu 90 %
High heat recovery
Up to 90 per cent of the heat contained in the indoor air is recovered and fed back into the incoming fresh air. This significantly reduces the load on the main heating system.
Ideal for refurbishments
Minimal installation effort
Decentralised LUNOS units are installed directly on the external wall – without the need for complex ventilation ducts running through the building. This means that refurbishments can usually be carried out without causing any disruption to the residents.
Healthy Living
Optimal indoor air quality
Continuous basic ventilation ensures a healthy indoor climate, reliably removes moisture and provides long-term protection for the building structure.
A strong signal for the global decarbonisation of buildings
The findings from British Columbia confirm what LUNOS has been advocating for decades: sustainable and cost-effective building refurbishment can only be achieved when building envelope insulation, heating technology and highly efficient heat recovery go hand in hand.
We are delighted with the outstanding success of our Canadian partner and the confirmation that LUNOS technology is making a measurable contribution to climate protection and the reduction of operating costs worldwide.
3 stories · 50 units
