influenced as much by its exterior envelope as by its mechanical systems. Insulation levels, airtightness, window performance, and thermal detailing all play critical roles in reducing energy demand. By lowering the load a building requires in the first place, mechanical systems can be smaller, simpler, and more resilient, reducing exposure to future energy cost volatility while improving occupant comfort. This philosophy is evident in one of Coolearth’s most notable completed projects: the Mount Dennis Early Learning & Child Care Centre, which was designed in conjunction with CS&P Architects. Finished in 2024, the facility holds the distinction of being Toronto’s first net-zero child care centre, completed under the City’s TransformTO policy, which requires new municipal buildings to achieve net-zero emissions. While the net-zero designation is significant, Sheena is quick to point out that performance targets never come at the expense of function. “It’s not a net-zero building unless it works as a child care centre,” she says. That meant meeting stringent programmatic requirements, ensuring abundant natural light, and creating a calm, welcoming environment for children and staff alike. The design incorporates large windows, natural finishes, and warm interior spaces, while carefully addressing the structural and thermal challenges that come with high-performance envelopes. Material choices were also informed by embodied carbon considerations, with extensive use of wood THE CONSTRUCTION SOURCE CANADA
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