Mitsubishi PEAD-AA18NL & PUZ-AK18NL 18,000 BTU 20.1 SEER2 Horizontal-Ducted Heat Pump System - R454B

Mitsubishi PEAD-AA18NL & PUZ-AK18NL: 18,000 BTU Ducted Concealed Heat Pump System

The Mitsubishi PEAD-AA18NL paired with the PUZ-AK18NL outdoor unit delivers efficient heating and cooling in an 18,000 BTU single-zone ducted system. Designed for rooms up to ~750 sq ft, it’s ideal for bedrooms, offices, or any space needing discreet, year-round comfort.

Featuring an INVERTER-driven compressor and low-ambient cooling down to 0°F (with wind baffles), this system provides precise temperature control and maintains capacity even in challenging climates. The slim 9-7/8″ height indoor unit fits easily into tight ceiling cavities or soffits. Advanced Blue Fin and seacoast protection coatings safeguard the outdoor coil and components for long-lasting performance in coastal or industrial areas.

Enjoy quiet operation with indoor sound levels as low as 28 dB(A), and flexible control options including wired and wireless remotes, third-party thermostat interfaces, and full smartphone access via the Comfort app. ENERGY STAR® certification ensures energy-efficient performance and savings.

General Information

System Type: Ducted concealed indoor unit + single-zone heat pump outdoor unit
Models: Indoor – PEAD-AA18NL | Outdoor – PUZ-AK18NL
Capacities: 18,000 BTU Cooling | Up to 22,000 BTU Heating
Room Size: Ideal for ~750 sq ft
Operating Modes: Heating & Cooling
ENERGY STAR®: Yes
Refrigerant / Factory Charge: R-454B, 4.6 lb

Key Features

• INVERTER-Driven Compressor: Efficient, precise temperature control

• Low-Ambient Cooling: Operates down to 0°F with wind baffles

• Compact Design: Slim 9-7/8″ height for easy installation in tight spaces

• Quiet Operation: Indoor sound levels as low as 28 dB(A)

• Seacoast & Blue Fin Protection: Enhanced corrosion resistance for coastal areas

• Smart Controls: Compatible with Comfort app, wired & wireless remotes, third-party thermostats

• ENERGY STAR® Certified: Energy-efficient performance for year-round savings

Specifications (Rated Conditions)

Cooling Capacity: 18,000 BTU (Max 18,500 | Min 4,700) | EER2: 11.7 | SEER2: 20.1
Heating Capacity @ 47°F: Up to 22,000 BTU | HSPF2: 8.8 | COP (47°F): 3.4
Heating Capacity @ 17°F: 11,600 BTU | COP: 2.4
Heating Capacity @ 5°F: 9,100 BTU | COP: 2.1
Heating Capacity @ -4°F: 8,000 BTU | COP: 1.96
Electrical: 208/230 V, 1-Ph, 60 Hz | MCA: 16 A | MOCP: 27 A
Airflow (Dry): 403–600 CFM (cooling & heating)
Sound Pressure: Indoor 28–37 dB(A) | Outdoor 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: 35-7/16 × 28-7/8 × 9-7/8 in. | 60 lb
Drain Connection: 1-1/4 in. O.D.

Included Components

Indoor Unit: PEAD-AA18NL ducted concealed unit
Outdoor Unit: PUZ-AK18NL heat pump condenser

Ideal For

Homeowners and professionals seeking a quiet, efficient ducted heat pump system for year-round comfort. The Mitsubishi PEAD-AA18NL & PUZ-AK18NL system offers flexible control options, advanced corrosion protection, and ENERGY STAR® performance for reliable heating and cooling.