

Our Ventilation Solutions
At Swiss AC, we supply and install two of the most trusted heat recovery ventilation systems available in New Zealand "Smooth air" and "Lossnay".
Every home is different, which is why our team starts with a simple in home assessment. We look at your layout, insulation, and lifestyle to understand your ventilation needs, then recommend the system that will deliver the best balance of fresh air, energy efficiency, and comfort. Whether that’s a Smoothair HEX390 or a Mitsubishi Lossnay, we’ll design and install the right solution for your home so you can enjoy healthier, drier air all year round..
Air Quality & Health
Airtight homes often trap moisture, pollutants, and stale air. Without proper ventilation, this can lead to dampness, mould, and unhealthy indoor air that impacts both comfort and breathing.
Energy Efficiency & Comfort
Mechanical ventilation keeps fresh air moving while recovering heat from outgoing air, so you enjoy lower energy bills and a consistently comfortable home.
Compliance & Protection
Effective ventilation helps you meet New Zealand’s Healthy Homes and Building Code standards while protecting your property from condensation damage. It’s not only about comfort, it’s about compliance, durability, and long-term value.
Which Ventilation System is Right for You?
Every home is different we’ll help you choose between Smoothair and Lossnay for the perfect balance of comfort, efficiency, and control.

Lossnay Fresh Air Ventaliation Recovery
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Fresh outdoor air: Uses filtered outside air (not attic air) for healthier ventilation.
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Up to 85–92% heat recovery: Retains warmth while ventilating.
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Quiet, consistent airflow: Delivers fresh air without draughts.
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Smart control: Optional Wi-Fi app lets you monitor CO₂ levels, filter alerts, and real-time operation.
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Integration: Works seamlessly with Mitsubishi Electric heat pumps for one-system control.
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Ideal for modern airtight homes: Keeps homes dry, compliant, and efficient.

Smoothair HEX390 - Balanced Pressure Ventilation
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Balanced-pressure heat recovery: Extracts stale air while bringing in fresh, filtered air.
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Up to 80% heat recovery: Keeps warmth in during winter, reduces heat gain in summer.
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Energy & cost savings: Runs at similar costs to older positive-pressure systems, but far more efficient.
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Tailored to NZ climate: Special heat-recovery core designed to handle damp, wet conditions.
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Coverage: One unit suits up to ~250–280 sqm (max 450 sqm).
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Smart features: Digital/manual controllers, washable filters, acoustic-insulated ducting.
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Optional add-ons: UV or F7 filters, supply air heater, summer bypass kit.
Contact us for your
free quote
Reliable Heat Pump Repairs, Servicing & Installs for Homes & Businesses
Located in Christchurch,
New Zealand.






