The coffee at work sucks. As in if they used dirty socks to filter it, it would taste better. But it is there, it is free and I drink a lot of it. And on the weekend I drink the good stuff I make in a French press. The worst cup of coffee in the building is still better for you than soda.
http://www.webstaurantstore.com/bunn-cwt15-3-12-cup-automatic-coffee-brewer-with-3-lower-warmers-bunn-12950-0112/234CWT15-3.html That is what we use. Or something very similar to it. I run Vinegar through the machine once a quarter or so and I clean the film out of the pots as well.
Those warmers are the worst. We have two break rooms, one with burners and one with air pots. I walk to the further one with air pots. Our free coffee is pretty decent. I have zero complaints.