ULTIMATE 25 SERIES

Extreme Low Temperature Heating

Designed for extreme cold conditions, the Ultimate 25 Series heat pump system will operate efficiently down to -13° F ambient temperature. LISTED ENERGY STAR 2025 MOST EFFICIENT HEAT PUMP. The ENERGY STAR Most Efficient criteria recognizes the most efficient products among those that qualify for ENERGY STAR. These exceptional products represent the leading edge in energy-efficient products this year.