Imagine moving into your dream apartment, only to find it transforms into an oven during summer. This is the harsh reality for many Australians, as a seemingly desirable design feature—large glazed windows—turns out to be a major culprit in skyrocketing indoor temperatures. Llewellyn McGarry thought she’d found the perfect energy-efficient home for herself and her mother in Canberra’s south. The floor-to-ceiling windows offered stunning sunset views of the mountains, and during winter, they surprisingly kept the apartment cozy. But here’s where it gets controversial: those same windows have made their summer months unbearable, with indoor temperatures soaring above 40 degrees Celsius. ‘It was unbelievable,’ Marie, Llewellyn’s mother, recalled. ‘We didn’t consider how hot it was going to get. It’s a concrete building with double glazing, but it wasn’t enough. It was so hot.’ And this is the part most people miss: despite meeting building standards, these apartments are failing their residents when it matters most.
As climate change intensifies, bringing hotter summers and more frequent heatwaves, experts warn that addressing the living conditions of apartment dwellers is no longer optional—it’s essential. In a groundbreaking two-year study, researchers are monitoring indoor temperatures, air quality, and energy usage in 450 apartments across Sydney, Melbourne, and Queensland. Led by senior research scientist Pippa Soccio, the study reveals a startling fact: 25% of participants felt uncomfortably warm or hot in their homes, primarily due to poor air circulation. ‘Very few have ceiling fans,’ Dr. Soccio noted. ‘Air conditioning is great, but what happens during a heatwave and power outage? Can you even open your home to let the cool air in?’ Other factors, like inadequate shading and inefficient air conditioning, further exacerbate the problem. But here’s the kicker: even when residents opt for air conditioning, it often fails to provide relief, leaving them trapped in sweltering conditions.
Llewellyn’s experience isn’t an isolated case. Across Australia, apartment residents are suffering through months of heat, despite their buildings meeting standards. She had assumed her double-glazed, tinted windows would shield her from the heat, but the reality was eye-opening. ‘I thought double glazing was the solution for heating, cooling, and noise, but when the sun hits, it feels hotter inside than outside,’ she explained. ‘It’s like touching a burning surface.’ Building scientist Peter Lyons sheds light on the dilemma: ‘Large glazed areas, especially west-facing ones without shading, absorb massive amounts of solar heat. While they provide free heating in winter, they become a liability in summer.’ This design flaw is widespread in Australian apartments, as highlighted in the CSIRO’s Apartment Energy Behaviour Study. The irony? More glass is often marketed as a way to maximize natural light, but it inadvertently turns homes into greenhouses. ‘Glazing can frame a view beautifully, but capturing an entire view might not be worth the trade-off,’ Dr. Soccio added.
So, what’s the solution? Llewellyn has installed internal blinds and reflective accordion-style blinds in her bedrooms, but even these measures fall short. ‘It’s still too hot,’ she said. ‘Even with the air conditioner set to 19 degrees, the temperature rarely drops below 24.’ Her energy bills have skyrocketed to $300 per month, a medical necessity due to her disability. ‘Anything above 24 degrees is incredibly uncomfortable for me, and I get quite ill,’ she shared. ‘We wanted a forever home, but we’re just too hot.’ Looking at new developments with floor-to-ceiling glass on all sides, Llewellyn and her mother worry for future residents. ‘They’ll get the sun all day and be cooked,’ Marie said.
But here’s the controversial question: Are we sacrificing comfort for aesthetics in modern apartment design? As Australians grapple with this issue, it’s clear that rethinking building standards and prioritizing livability over looks is no longer optional. What do you think? Are large glazed windows a design marvel or a costly mistake? Share your thoughts in the comments—let’s spark a conversation that could shape the future of urban living.
