Mitsubishi PLA-AE12NL & PUZ-AK12NL 12,000 BTU 24.8 SEER2 Four-Way Ceiling Cassette Heat Pump System (w/ Grille) - R454B

Mitsubishi PLA-AE12NL & PUZ-AK12NL: 12,000 BTU Ceiling Cassette Heat Pump System

The Mitsubishi PLA-AE12NL indoor cassette paired with the PUZ-AK12NL outdoor heat pump delivers efficient, year-round comfort with 12,000 BTU of cooling and heating. Ideal for spaces up to ~600 sq ft, it’s designed for offices, classrooms, retail areas, living rooms, and other environments needing quiet, evenly distributed air. The system features Mitsubishi’s INVERTER-driven compressor technology for precise output control and stable temperatures, plus low-ambient cooling capability down to 0°F with wind baffles. The indoor cassette includes the advanced 3D i-see Sensor®, which scans the room for temperature differences and occupancy, automatically adjusting airflow for comfort and efficiency. Its compact 33" × 33" footprint fits standard ceilings and includes a built-in condensate lift for easy installation. The outdoor unit features Blue Fin coil coating and full seacoast protection for long-lasting durability in coastal or industrial applications. Quiet operation, smart control compatibility, and ENERGY STAR® certification make this system a strong all-season solution.

General Information

System Type: Ceiling cassette indoor unit + single-zone heat pump outdoor unit
Models: Indoor – PLA-AE12NL | Outdoor – PUZ-AK12NL
Capacities: 12,000 BTU Cooling (Max 12,400 | Min 4,900), 20,000 BTU Heating at 47°F
Room Size: Ideal for ~600 sq ft
Operating Modes: Cooling + Heating (24-hour continuous cooling)
ENERGY STAR®: Yes
Refrigerant / Factory Charge: R-454B, 4 lb 6 oz (pre-charged for 100 ft line length)

Key Features

3D i-see Sensor®: Intelligent thermal scanning and occupancy detection
INVERTER-Driven Compressor: Smooth, efficient temperature control
Low-Ambient Cooling: Operates down to 0°F with wind baffles
Blue Fin + Seacoast Protection: Enhanced corrosion resistance
Quiet Operation: Indoor sound levels as low as 26 dB(A)
Compact Cassette Design: 33" square footprint with built-in condensate lift
Smart Controls: Comfort app, wired/wireless remotes, BAS interfaces
Balanced Comfort: Multiple airflow patterns for even room coverage

Specifications (Rated Conditions)

Cooling Capacity: 12,000 BTU (Max 12,400 | Min 4,900) | SEER2: 24.8 | EER2: 17.1
Heating Capacity: 20,000 BTU at 47°F | 10,700 BTU at 17°F | 8,800 BTU at 5°F
Electrical: 208/230 V, 1-Ph, 60 Hz | MCA: 16 A | MOCP: 27 A
Indoor Airflow: 370–530 CFM | Indoor Sound: 26–30 dB(A)
Outdoor Sound: 44–46 dB(A)
Piping: Liquid 1/4 in | Gas 1/2 in | Max line length: 100 ft | Max height: 100 ft
Outdoor Dimensions / Weight: 34-19/64 × 11-13/16 × 24-13/16 in | 99 lb
Indoor Dimensions / Weight: 33-1/16 × 33-1/16 × 10-3/16 in | 46 lb
Drain Connection: 1-1/4 in O.D.

Included Components

Indoor Unit: PLA-AE12NL ceiling cassette
Outdoor Unit: PUZ-AK12NL heat pump condenser

Ideal For

Homeowners or professionals seeking a quiet, efficient ceiling cassette system with advanced comfort control, cold-climate performance, and durable coastal-rated construction. The Mitsubishi PLA-AE12NL & PUZ-AK12NL provides reliable heating and cooling year-round.