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Apartment building is another way of saving energy. My parents one was in the middle of the house, and we'd shut all radiators, and still it was very warm inside. I guess if per-apartment counters were added, people would keep their appartments cooler, but still it would require very few heating.

And I remember the time when we had poor insulation, mostly in windows - it was misery to stay indoors in a sweater, still feeling a bit cold, but in warm sneakers, and feet sweating. Triple-glass packet windows were a blessing!




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