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Mitsubishi Electric / Manufacturer case study
A Christchurch home with limited roof access
In this Mitsubishi Electric case study, a vertical Lossnay unit fitted in the laundry when the roof hatch was too small. Four outlets served three bedrooms and the open-plan living area.
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www.mitsubishi-electric.co.nz | 0800 784 382 In a quiet residential suburb located southwest of Christchurch, an air tight new build struggles with window condensation and the effects of mould on furnishings and its family’s health. To solve the issue of moisture-related mould and mildew, the homeowners installed a Vertical Lossnay Heat Recovery Ventilation system and have noticed a significant improvement in their home’s air quality this winter. The Goal CHRISTCHURCH Built in 2018 to modern building regulations, this brick three bedroom home is insulated to the healthy home standards and features double glazed windows. However, when undergoing the building process, ventilation was never mentioned with only basic extraction fans installed in the bathrooms. Because the home is so air tight, like most new homes in New Zealand, it doesn’t breathe. This has led to moisture build-up on the window frames and mould growing on the window frames and curtains. The option of leaving doors or windows open to allow more fresh air to enter was not always a viable solution from an outdoor noise or security perspective for the young family, and in the cooler months they didn’t want to lose valuable warmth by introducing draughts. PUBLISHED AUG 2023 RESIDENTIAL Project Showcase: The Vertical Lossnay helps a young family breathe easy • VL-250 Vertical Heat Recovery Ventilation Unit EQUIPMENT BREAKDOWN
Document supplied by Mitsubishi Electric / Black Diamond Technologies. Copy checked 5 November 2026. Printed dates and model-specific notes appear in the document.
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