I think alot of times with these tips we read all over the place, we never know if they are "old wives tales" or the real deal. And so many people are spewing advice these days, you wonder what is fact and what is something someone just said on their own.
But it certainly makes common sense what you say : If water cannot flow through the holes then neither can air.
I always get these tips from the hydro company which I am sure are true but I always wonder just how much money I am really saving. |