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Fresh outdoor air
Lossnay draws fresh air directly from outside the home rather than taking air from the roof or attic space.
MITSUBISHI ELECTRIC LOSSNAY
Lossnay Heat-Recovery Ventilation Christchurch
Fresh air. Without throwing your comfort away.
Mitsubishi Electric Lossnay Fresh Air Heat Recovery Ventilation continuously introduces fresh, filtered outdoor air while removing stale indoor air and recovering energy from the outgoing air stream.
Designed as part of a properly engineered whole-home comfort system, Lossnay can work alongside Mitsubishi Electric ducted heating and cooling to deliver fresh air, temperature control and ventilation throughout the home.
INDOOR AIR QUALITY
Modern homes hold onto more than heat
As homes become better insulated and increasingly airtight, natural air leakage is reduced.
That is good for energy efficiency, but it also means moisture, odours and stale indoor air can remain trapped inside unless ventilation is properly considered.
Opening windows introduces fresh air, but it can also allow conditioned indoor air to escape. A purpose-designed mechanical ventilation system provides a controlled way to introduce outdoor air while removing stale indoor air.
COMFORT PHILOSOPHY
Heating controls temperature. Ventilation controls the air you live in. A complete comfort system should consider both.
Heat Pump Upgrade Co integrates Lossnay directly into system design so your Canterbury home gets temperature control and fresh air together.
HOW LOSSNAY WORKS
Fresh outdoor air in. Stale indoor air out.
Lossnay is a balanced-pressure mechanical ventilation system with a patented heat-exchange core that transfers thermal energy between outgoing stale air and incoming fresh outdoor air.
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Filtered before entering
Incoming outdoor air passes through the Lossnay filtration system before being supplied to the home.
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Stale air removed
Stale indoor air is extracted from the home rather than simply being circulated from room to room.
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Energy recovered
Before stale air is discharged outdoors, the Lossnay heat exchanger transfers energy between outgoing and incoming air streams.
Note: Lossnay provides ventilation with heat recovery. It is designed to work alongside active heating and cooling (such as a Mitsubishi Electric ducted heat pump) rather than replacing a heat pump.
SEE IT IN ACTION
How Mitsubishi Electric Lossnay works
See how Mitsubishi Electric Lossnay brings fresh outdoor air into the home, removes stale indoor air and recovers energy that would otherwise be lost through conventional ventilation.
Video courtesy of Mitsubishi Electric New Zealand. Lossnay Fresh Air Heat Recovery Ventilation.
THE LOSSNAY DIFFERENCE
Ventilation designed differently
Fresh air from outside
Lossnay draws fresh air directly from outdoors rather than using stale roof-space or attic air.
Balanced-pressure ventilation
Fresh air is supplied while stale indoor air is extracted simultaneously as part of a balanced mechanical system.
Heat recovery
Energy from outgoing conditioned air is transferred through the Lossnay heat exchanger to the incoming fresh air stream.
Filtered incoming air
Outdoor air passes through Lossnay filtration before being introduced into your living spaces.
Quiet operation
Lossnay systems are engineered for unobtrusive operation when correctly designed, selected and installed.
Designed for modern homes
Mechanical ventilation becomes increasingly important as homes become more airtight and uncontrolled air leakage decreases.
A DIFFERENT APPROACH
Fresh air should come from outside
Lossnay introduces fresh air directly from outside the building. It does not rely on roof-space or attic air as the source of ventilation air.
Attic air can contain accumulated dust, dirt, insulation fibres, mould spores, and animal droppings. The lack of air movement in roof spaces means attic air is often stale and hard to filter effectively.
Drawing fresh air directly from outdoors allows the ventilation system to source clean air, filter it, recover energy, and distribute it cleanly through a properly designed system.
MITSUBISHI ELECTRIC LOSSNAY
Outside air → filtration → heat recovery → home
Direct outdoor fresh intake. Filtered and temperature-balanced before entering your living space.
CONVENTIONAL ATTIC-AIR VENTILATION
Roof-space air → home
Uses unsealed roof cavity air. Can carry dust, allergens and stale attic conditions into the home.
INTEGRATED WHOLE-HOME COMFORT
See How Lossnay Integrates With a Ducted Heat Pump
Rather than treating heating, cooling and ventilation as separate systems, Mitsubishi Electric Lossnay can be integrated with a ducted heat pump to create a complete whole-home comfort solution.
Video courtesy of Mitsubishi Electric New Zealand. Integrated Lossnay Ventilation and Ducted Heat Pump Solution.
Designed as One Complete System
Heat Pump Upgrade Co can design the Mitsubishi Electric ducted heat pump, Lossnay fresh air ventilation and intelligent zone control together, creating a carefully engineered whole-home comfort solution designed around the home.
WHOLE-HOME COMFORT
Heating, cooling and fresh air — designed together
Mitsubishi Electric Lossnay can be combined with a Mitsubishi Electric ducted heat pump to create a more complete whole-home comfort solution.
The ducted heat pump manages heating and cooling while Lossnay manages the introduction of fresh outdoor air and extraction of stale indoor air.
When these systems are considered together during the design process, airflow, ductwork, controls and ventilation can be engineered as part of one coordinated solution.
01 — HEATING
Mitsubishi Electric ducted heat pump
Whole-home warmth delivered discreetly through ceiling diffusers.
02 — COOLING
Whole-home conditioned air
Even cooling and dehumidification across summer months.
03 — FRESH AIR
Mitsubishi Electric Lossnay
Continuous filtered fresh outdoor air with heat energy recovery.
04 — CONTROL
Integrated system design
Intelligent zoning and Wi-Fi management from a single interface.
ENGINEERED VENTILATION
The equipment is only one part of the system
A premium ventilation system depends on how it is designed and installed. Airflow rates, duct sizing, intake and exhaust locations, supply-air positioning, extract locations, filtration, noise control, access for servicing and integration with heating and cooling all need to be considered.
Heat Pump Upgrade Co approaches Lossnay as part of the overall mechanical design of the home rather than simply adding a ventilation unit to the roof space.
Fresh air should be designed into the system — not added as an afterthought.
RANGE OVERVIEW
A Lossnay solution for different homes
Whole-home ducted Lossnay
Designed for homes where a concealed ducted ventilation system can distribute fresh air to multiple areas through ceiling diffusers.
Mitsubishi Electric NZ Specification
Vertical Lossnay
The Mitsubishi Electric vertical Lossnay range (VL-250 / VL-350 / VL-500) provides additional installation flexibility where a conventional horizontal in-roof installation may not be ideal, such as dedicated utility rooms.
Mitsubishi Electric NZ Specification
Integrated whole-home solution
Lossnay can be considered alongside a Mitsubishi Electric ducted heat pump when designing a complete heating, cooling and ventilation solution.
Mitsubishi Electric NZ Specification
System selection, duct layout and model capacity are determined during Heat Pump Upgrade Co system design based on your home's layout and airflow calculations.
CONNECTED COMFORT
See what your ventilation system is doing
Compatible Mitsubishi Electric Lossnay systems can use optional Lossnay Wi-Fi Control (via compatible Wi-Fi Interface hardware MAC-588IF-E).
The Wi-Fi interface lets you see by how many degrees Lossnay is pre-warming or pre-cooling incoming fresh air in real time. In summer, you can monitor temperature reduction during Automatic Free Cooling mode.
The app also provides filter cleaning reminders to maintain cost-efficient operation and air quality.
WI-FI CONTROL CAPABILITIES
- •Real-time tracking of pre-warming / pre-cooling degrees
- •Summer Automatic Free Cooling mode temperature monitoring
- •Proactive filter maintenance and cleaning reminders
- •Remote ventilation adjustment from iOS or Android app
Available on compatible Lossnay models (including VL-250 / VL-350 / VL-500 Vertical, LGH-RVX-E-1 and LGH-RVS-E series) when fitted with a compatible Wi-Fi interface.
HEAT PUMP UPGRADE CO
Designed as one complete comfort system
Heat Pump Upgrade Co specialises in premium engineered Mitsubishi Electric ducted heat pumps and whole-home comfort solutions across Christchurch and Canterbury.
Rather than treating heating, cooling, ventilation and control as unrelated products, we consider how each component will work together within the home.
For projects incorporating Lossnay, this means considering the ventilation requirements alongside the ducted heat pump, airflow design, zoning and control strategy from the beginning.
One home. One mechanical design. One complete comfort solution.
FREQUENTLY ASKED QUESTIONS
Lossnay Ventilation FAQs
What is Mitsubishi Electric Lossnay?
Lossnay is Mitsubishi Electric's fresh air heat recovery ventilation system. It continuously introduces filtered outdoor air, removes stale indoor air and transfers thermal energy between the outgoing and incoming air streams.
Does Lossnay heat the house?
No. Lossnay is primarily a ventilation and energy-recovery system. A heat pump provides active heating and cooling. The two systems can be combined as part of a complete whole-home comfort solution.
Where does Lossnay get its fresh air from?
Lossnay draws fresh air directly from outside rather than relying on roof-space or attic air.
Can Lossnay work with a ducted heat pump?
Yes. Mitsubishi Electric Lossnay can be combined with compatible Mitsubishi Electric ducted systems as part of a whole-home heating, cooling and ventilation solution. The exact system configuration must be designed for the individual home.
Is Lossnay suitable for new builds?
Lossnay can be particularly relevant in increasingly airtight modern homes where controlled mechanical ventilation forms part of the overall building-services design. It can also be considered for existing homes where installation conditions allow.
Does Lossnay help with condensation?
Ventilation can help manage moisture by removing moisture-laden indoor air and introducing fresh outdoor air. Condensation is also affected by insulation, heating, building construction and occupant behaviour.
Does Lossnay use attic air?
No. Mitsubishi Electric Lossnay introduces fresh air directly from outside.
Can Lossnay be controlled by Wi-Fi?
Compatible Lossnay models can use optional Mitsubishi Electric Lossnay Wi-Fi Control (via compatible Wi-Fi Interface hardware).
Official documentation available from Mitsubishi Electric New Zealand Lossnay Home Ventilation.
Want fresh air designed into your whole-home comfort system?
Talk to Heat Pump Upgrade Co about combining Mitsubishi Electric Lossnay Fresh Air Heat Recovery Ventilation with a premium ducted heating and cooling solution designed around your home.