Carrier has introduced a new Performance Series ductless multi-zone heat pump lineup. The company says this new line will offer increased flexibility, greater energy efficiency, and improved operation compared to the previous mid-tier lineup. The improved Performance Series multi-zone ductless product line boasts a Seasonal Energy Efficiency Ratio (SEER) rating up to 23.8 with a Heating Seasonal Performance Factor up to 10.5 while providing heating down to        -22ºF and cooling up to 122ºF. To accommodate most installations, the piping length has also been extended to 328 ft in this improved product line.