Mitsubishi 20,000 BTU multi-zone outdoor heat pump (MXZ-2C20NA*). This is an extremely efficient unit that can connect to a variety of indoor unit types and can handle two zones (indoor units).

Unit Type 1.66-Ton Inverter Condenser Heat Pump
Product Line M-Series
Operating Mode Cooling & Heating
Low Ambient Heat: NO
Number of Zones 2
Unit Capacity 20,000 BTU

Outdoor Unit MXZ-2C20NA*

Cooling Capacity up to 20,000 BTU
Heating Capacity up to 25,500 BTU
SEER2 Up to 20.0
EER2 Up to 12.7
HSPF2 Up to 10.0
Heating Minimum Temp 5 F
Cooling Minimum Temp 14 F

This outdoor unit allows you to connect a wide variety of indoor units ranging up to 15,000 BTU.
Blue Fin anti-corrosion treatment applied to heat exchanger for increased coil protection and longer life.
The outdoor unit powers the indoor units, and should a power outage occur, the system is automatically restarted when power returns.
Quiet outdoor unit operation
Intelligent Power Module (IPM) for reduced power loss
High pressure switch for additional protection