Screw and scroll compressor models generally cost more initially, but can operate longer before overhauling. Sizing When selecting a chiller, careful attention to appropriate sizing is critical to minimize energy use. An oversized chiller not only costs more to purchase, but also leads to substantial energy losses from poor low-load performance and excessive cycling. The 1992 signing of the Montreal Protocol banned the production of CFCs in the U.S., beginning in 1996. When retiring a chiller that contains CFCs or HCFCs, the Clean Air Act requires that the refrigerant be recovered on-site by a certified technician.
Noise pollution can be a substantial issue with air-cooled chillers.
Rotary screw and scroll compressor models are generally considerably quieter than reciprocating models.