Deep decarbonization is often seen as slow, expensive, and disruptive. A pilot project in Woodstock shows it doesn’t have to be.

Indwell, working with Trim Tab and Building Knowledge Canada, tested a smarter approach: completing energy retrofits during routine unit turnover. The strategy—seal, ventilate, electrify—focuses on high-impact improvements delivered within tight timelines.

With units vacant, the team prioritized advanced air sealing, using AeroBarrier alongside conventional methods to bring airtightness close to modern code levels. This reduced heating demand to support a full transition away from natural gas.

The retrofit also reimagined in-suite systems. Compact, all-in-one heat pump units replaced legacy equipment, delivering heating, cooling, and balanced ventilation, without outdoor units. The result: 

• no gas bills,
•  improved indoor air quality, and 
• consistent comfort for tenants.

Crucially, these outcomes were achieved without major envelope overhauls or high embodied carbon impacts. Costs remained predictable and significantly lower than traditional deep retrofit approaches.

This project demonstrates a scalable path forward for low-rise housing across Canada. By aligning retrofits with natural turnover cycles and focusing on proven, integrated solutions, housing providers can accelerate decarbonization while improving everyday living conditions.

It’s faster, more practical—and ready to scale.

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Download the case study to learn more about the project.