Gas savings up to 65%: LUNOS as a part of successful renovation projects in Canada
Published by: LUNOS Lüftungstechnik |
Michael Steckenborn Technical Director, LUNOS Lüftungstechnik |
Reading time: app. 3 Min. |
At a glance:
Up to 65 per cent reduction in natural gas consumption: Scientifically supervised measurements from the FortisBC study (“Deep Energy Retrofit Pilot Programme”) in Canada demonstrate dramatic reductions in energy consumption and emissions.
Key component: LUNOS e²60: In 3 out of 4 blocks of flats studied, decentralised ventilation technology with up to 90 per cent heat recovery ensures the energy performance of the overall refurbishment.
No ventilation ducts required: Installation takes place directly via the external wall – ideal for occupied existing buildings, without any intervention in the building structure or corridor ductwork.
Climate protection & building protection: Long-term protection against mould formation whilst significantly reducing GHG emissions (up to a 59 per cent reduction in CO₂).
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:
3 stories · 50 units
Manor House
North Vancouver · Metro Vancouver Housing
-65%
Gas consumption
-59%
GHG emissions
approx. 13,000 CAD
Annual savings
As part of the building’s mechanical systems, a decentralized ventilation strategy tailored to each apartment was implemented using LUNOS e²60 systems. The units were integrated directly into the exterior wall, ensuring that each residential unit is continuously supplied with fresh air—without the need for new ventilation ducts or central air distribution systems.
13 stories · 137 units
Forte Apartments
Vancouver · Residential high-rise
-55%
Gas consumption
-53%
GHG emissions
ca. 27.500 CAD
Annual saving
As part of the performance-based renovation plan, a decentralized ventilation strategy using LUNOS wall-mounted ventilation units with heat recovery was implemented:
3 stories · 35 units
Viscount Villa
Kamloops · British Columbia
-51%
Gas consumption
-49%
GHG emissions
> 8.000 CAD
Annual savings
As part of the building envelope renovation, LUNOS e²60 ventilation units with heat recovery were installed directly in the exterior walls. This ensured reliable, user-independent ventilation of the fully occupied building without the need for central ventilation ducts or air distribution through the hallways.
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:
Up to 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.
Perfect 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.
Service
Support and Contact
As the case studies on energy-efficient refurbishment demonstrate, the use of decentralised LUNOS systems leads to a drastic reduction in gas consumption and emissions. Our consultancy team supports architects, specialist planners and HVAC contractors from the initial concept phase right through to the precise design of your construction and refurbishment projects.
For maximum energy savings and the protection of the building fabric during refurbishment and new-build projects: we offer expert support in drawing up a ventilation concept in accordance with DIN 1946-6, as well as in selecting highly efficient ventilation units.
Personal consultation
Support from LUNOS experts regarding DIN 1946-6 and equipment selection.
Support for architects, specialist designers and installers from LUNOS experts regarding DIN 1946-6 and the selection of equipment for your refurbishment project.
Plan with confidence now: Our free tool guides you step by step through standard-compliant ventilation planning in accordance with DIN 1946-6. Simply enter your project details, select the appropriate LUNOS systems and generate a professional bill of materials and parts list straight away.
Frequently asked questions about energy-efficient refurbishment with decentralised ventilation
How much energy can be saved through LUNOS’s decentralised ventilation system during a refurbishment?
When combined with building envelope refurbishment, the practical results from the Canadian FortisBC programme show a reduction in heating energy and gas consumption of up to 65 per cent. Decentralised LUNOS ventilation units with heat recovery (such as the LUNOS e²60) recover up to 90 per cent of the heat from the room, thereby significantly reducing the load on the heating system.
Can the LUNOS e²60 ventilation system be retrofitted without ductwork?
Yes, decentralised LUNOS units are installed directly through a core hole in the external wall. There is no need to install complex ventilation ducts or pipe networks running through the building, which makes installation in occupied buildings particularly straightforward and cost-effective.
3 stories · 50 units
