Mitsubishi 12,000 BTU P-Series Cooling-Only Wall Mounted Single Zone System (PKA-A12LA & PUY-A12NKA7)Mitsubishi's 12,000 BTU cooling only wall mounted single zone heat pump (PKA A12LA & PUY A12NKA7) is part of Mitsubishi's P series. This single zone unit is perfect for server rooms, daycares, churches, small offices, and other business and commercial applications. Mitsubishi Electric created the P series systems for commercial applications. P series systems like the PKA A12LA & PUY A12NKA7 are built with more durable materials, meant to survive