Let’s be real: a water cooler isn’t a power-hungry beast. Most models use about as much electricity as a dim nightlight. Expect maybe $5 to $10 a year on your electric bill. It’s basically nothing.
Maintenance is even easier. For a bottle cooler, you just wipe it down with a damp cloth. For a bottleless model, you swap a filter twice a year. That’s less work than watering your houseplants, and your plants probably look a little sad right now.
If you rent, your service company usually handles all repairs and filter changes for free. That’s the appeal: you never have to figure out why the hot water tap is just lukewarm again.