← Heat pumps & ventilation
Mitsubishi Electric / Manufacturer case study
A Rangiora home with a low roof
A Canterbury family wanted less condensation, but their shallow roof made servicing ceiling filters difficult. See the wall and ceiling solutions in Mitsubishi Electric’s case study.
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Project Showcase: Ventilation Solution for an Airtight House with Low Roof Space RESIDENTIAL www.mitsubishi-electric.co.nz | 0800 784 382 PUBLISHED MAR 2021 This well-insulated family property located in a new subdivision in Rangiora, Canterbury needed a solution to reduce condensation levels and ensure better quality air. The Goal With no previous ventilation installed in the house, the owners wanted to lower condensation and minimise moisture build-up to allow a better climate within the home. The Challenge Due to the house already being very well-insulated above standard building code, it has a very tight envelope creating a lack of airflow. This resulted in high moisture levels which, by default, means any heating device will have to work harder. For this home, it meant the heat pumps that were already installed took much longer in winter to heat a space to set temperature. The moisture build-up was the single biggest challenge faced on this property, with running windows in the bedrooms and mould levels ever-increasing. RANGIORA EQUIPMENT BREAKDOWN • Wall Mounted Single Room Lossnay • Ducted Single Room Lossnay
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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