Since installing air curtains over both our back door and our drive-thru, we have noticed a huge improvement. When we had a south wind in the winter before, the drive-thru staff would always be bundled up and complaining about the cold, now I never hear a word. When we used to get our deliveries before, the whole store would be cold on a cold day, now when its 20 below I am unloading the truck in the back without even having my jacket on. I would highly recommend this product.
Regards, Dean Terry Owner/Operator Whitehorse, Yukon