Hitema free-cooling chiller marked R1234ze and HFO refrigerant

Photo: Mariusz Młynarczyk / CloudAir.tech

A Hitema chiller with light blue V-coil covers reads "Eco-friendly solutions R1234ze" and "HFO refrigerant GWP=7". Below, a header pipe marked "FREE-COOLING" connects the coil circuits through flanged fittings. The open frame stands on the blue stand carpet, with Hitema International branding on the banner above.