We called because we had a problem with the fridge in one of our showcases, and also with one of the air conditioners. They fixed the showcase, and I have had no problems since. The AC is probably a little bit too small for our store, but they were determined to make it work, and came in twice to solve the problem. It actually works really well right now, despite being very small. And we love the 24 hour service. EZ Temp is always there, whenever I need them.