The Comfort-Aire VXP Series is an extreme performance air source heat pump system featuring an inverter-driven compressor that fully modulates to deliver maximum efficiency and comfort year round. With hyper heat capability down to -22 degrees F and cooling up to 122 degrees F, the VXP Series operates reliably in virtually any climate. Efficiencies reach as high as 19 SEER2, and the system is compatible with auxiliary heat kits and MXP Series cased coils for dual-fuel capability with a new or existing furnace.