i have a question about the recirculating drinking water fountains (for kitties) . Do they make a model that actually chills the water too? I may want to purchase one for abby and buddy , but they like fresh chilled water and we may have to leave them alone for maybe two nights (for the first time :( ) and i want them to be as comfortable as possible. do any of the big chain pet stores have such a item? thank you:)