Have you ever heard of the $1 bill test? The premise is that you shut a door or a window on a $1 Bill. If you can remove the bill with little or no resistance, it’s a sign that air is leaking out — and you’re losing money.
The science behind it may be open to speculation. But this little experiment teaches us a more significant lesson: that there are simple things we can do around our homes to assess our energy efficiency — or inefficiency, as the case may be.
