空气处理置换空气，空间加热和通风应用。适合以下几点：
The Reznor PREEVA is a new generation of air handlers capable of heating, cooling, ventilation and ‘free cooling’, with filtration.
The Reznor PREEVA High Efficiency condensing units SHH and RHH are the latest variants of our compact air handlers. The difference with the regular PREEVA air handlers is that the SHH and RHH have a secondary heat exchanger for additional heat extraction out of the flue gases, to attain an efficiency of 102%!
