If you need serious cooling or heating, this 12-ton temporary air conditioning unit can remove up to 12 tons of heat per hour. This light commercial A/C has wheels for moving into place and an internal pump with safety float for condensate water removal. This unit also provides heat so you can have a solution for every time of year. It can even operate at temperatures below freezing. United Rentals Climate Solutions has an entire line of coolers and heaters for your jobsite, event, tent or warehouse.