Since the initial development of rooftop air conditioning (A/C) systems, companies industry wide have been tweaking existing technology for a more sophisticated, efficient and greener design. The result has been heavier-duty compressors, systems designed for small buses, renegotiated seals to eliminate leaks and even the successful application of units departing from their intended usage. And, as the customer demand for rooftop systems continues to grow and the environmental standards remain stringent, manufacturers are focusing their attention to the greener refrigerant, HFC 1234YF, to assess how it can complement their already existing products.

looks great.