I kept airing out my house in the middle of a heatwave to “refresh” it: the day I kept the shutters closed from 10am to 9pm, I understood what I’d been letting in for years
For years, opening windows during the hottest part of the day felt like the obvious way to cool a home. One 10-hour experiment with closed shutters revealed a costly mistake: I’d been actively importing heat into my house instead of keeping it out. Here’s what basic thermodynamics taught me that a decade of habit never did.
