According to the official Good Design website, this solution stands out for its promise of high efficiency innovation. The SL25XPV variable capacity, inverter driven heat pump results in considerations of this "ultra-efficient" competition.
"The SL25XPV boasts system ratings of up to 24 SEER/15.5 EER/11.8 HSPF and exceptional heating performance and efficiency in low ambient conditions." According to Good Design "it creates opportunities for higher-level efficiency requirements and more separation for differentiation in the ultra-efficiency market."
Finally, and as an extra fact, this Lennox heat pump also has ENERGY STAR certification as "most efficient" in 2022. Products that receive this recognition avoid greenhouse gas emissions by meeting rigorous energy efficiency performance levels set by the U.S. Environmental Protection Agency.