
As New Zealand homes become better insulated and more airtight to meet evolving H1 insulation standards, a new challenge is emerging: overheating. Combined with large glass facades, limited cross-ventilation, and denser urban environments, today's high-performance builds can easily trap heat, leading to occupant discomfort and higher cooling bills.
Mitsubishi Electric's new white paper, The NZ Comfort Code: Designing for Better Indoor Air Quality and Overheating Prevention, brings together expert insights from BRANZ research, updated building codes, and on-the-ground architectural strategies to help you design homes that are warm in winter, without overheating in summer.
The guide also highlights how Balanced Heat Recovery Ventilation like Mitsubishi Electric’s Lossnay supports healthy, compliant, and energy-efficient living by delivering pre-cooled fresh air and reducing the need for mechanical cooling.
Whether you're designing terraced townhouses or compact urban dwellings, this guide is a must-read for future-focused residential design.
Lossnay Fresh Air Heat Recovery Ventilation
Designed for today’s airtight homes, Mitsubishi Electric Lossnay recovers energy while delivering fresh, filtered air — helping to manage indoor temperatures, reduce humidity, and improve comfort without relying on open windows.