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In late 2020 we’re hearing a lot about inherent beliefs and the need to find “facts” to suit them. Some of the info presented here is actually a good example of that phenomenon.
The middle part of the episode, which consumes so much fresh air espousing the benefits of fresh air and “making the indoors more like the indoors” is super comforting and head-nodding. But it’s wrong.
Actually, keeping our interiors energy efficient and well-ventilated, counterintuitively, relies on NOT opening windows.
When it comes to air infiltration, the vast majority of buildings in existence are loose and leaky. In the rich world, though, they are equipped with high-powered HVAC systems which use ungodly amounts of energy. So we have the worst of all worlds: stale internal air reconditioned and recirculated at great carbon cost, non operable windows, and outside air making its way in anyway through countless seams and gaps at the building’s perimeter.
A building built within the past 10 or 20 years is much more likely to be tight, with proper continuous barrier layers against exterior air and moisture. This allows HVAC systems to be much smaller, thereby using less energy. An operable window is simply a large hole in this otherwise well-sealed envelope.
Windows are expensive both in first cost and in lifetime use. When opened, you get “fresh air” and all it brings: outside allergens, pollutants, moisture (or lack of moisture), and noise. Modern buildings use ERV systems to bring in fresh air while mitigating these negative qualities. They are so low-power that it is actually MORE energy intensive to open a window, because of the new heating/cooling loads created. In order to make the drastic carbon cuts we need, we cannot afford the luxury of “fresh air.”
Operable windows fit with our self-image as people who crave “nature.” The uncomfortable truth is revealed by the vast majority of people you’ll see on their phones the next time you’re in the great outdoors. It turns out we need technology to mediate our relationship with the outside — a sash window is cutting-edge 18th-century technology –and in this case, saving the planet depends on it.
To go along with the bird sounds, I would recommend a website with sounds of forests from around the world.
https://timberfestival.org.uk/soundsoftheforest-soundmap/