Housing and equipment in Renfrew
The post-war bungalows have full basements, single-storey duct layouts, and mechanical areas that have been added to over decades, frequently with a developed basement built around the equipment.
- The infill duplexes have purpose-built mechanical rooms, sealed high-efficiency furnaces, sidewall venting, and often a tankless or high-recovery water heater.
- The two produce almost no overlapping constraints, which is why the building type is the first question.

