Designed for efficient durability. The ML14XC1 air conditioner is designed for smart energy use, and designed to last. Efficiency ratings of up to 16.00 SEER mean the ML14XC1 can reduce utility bills without any compromise in comfort. It may also make you eligible for local utility rebates. The ML16XC1 is built with a scroll compressor that’s engineered to reliably deliver the cooling your home needs.