Sure, but there are other facets of our architecture that tend to lock-in heat:

• Low ceilings
• Thick ston/brick or timber-framed + insulated walls.
• Closed-plan layouts with many internal doors to compartmentalise our homes.
• Double or triple glazed windows.

In contrast to hotter countries such as the USA which has higher ceilings, thinner walls, and more open floorplans.