When you are ready to add a water cooler to your office environment, the choice that the office manager will face will be to purchase a water cooler or to buy a water cooler for the workers. If your office is going to expand, it is better to rent a water cooler so that the option to upgrade the water cooler is yours. Also, if the office managers are not certain if they will keep the water cooler long term, it is better to participate in the rental program. However, if you are certain that your office will stick with the water cooler for a long time, then consider purchasing the water cooler.