Call 877-837-7745 to ensure you get the best prices on the market! Water bubblers often refers to the dispenser with the giant jug on top that has the hot or cold levers. We consider a water cooler a drinking fountain that keeps your beverage cold while being hooked up to a water pipe inside the wall. Drinking fountains are the same, but dispenser room temperature water. So now that you know the differences, what 8 gph mean? That means 8 gallons per an hour, which means that the refrigerator "cooler" part of the water cooler will chill up to 8 gallons per hour. This seems to be the standard, but if you have higher traffic you may want to look into more gallons per an hour to meet demand. Don't forget that bottle filling stations are actually becoming more popular due to ease of use, it is environmentally friendlier, and you don't have to share a tap with 500 other people every day.