Mitsubishi PEAD-AA18NL & PUY-AK18NL 18,000 BTU 20.1 SEER2 Horizontal-Ducted Cooling Only System - R454B

Mitsubishi PEAD-AA18NL & PUY-AK18NL: 18,000 BTU Ducted Concealed Cooling-Only System

The Mitsubishi PEAD-AA18NL paired with the PUY-AK18NL outdoor unit delivers efficient, reliable cooling in an 18,000 BTU single-zone ducted system. Designed for rooms up to ~750 sq ft, it’s ideal for offices, server rooms, or spaces needing discreet, continuous cooling.

Featuring an INVERTER-driven compressor and low-ambient cooling down to -40°F with wind baffles, this system provides precise temperature control even in demanding conditions. 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, ensuring long-lasting performance in coastal or industrial environments.

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.

General Information

System Type: Ducted concealed indoor unit + single-zone cooling-only outdoor unit
Models: Indoor – PEAD-AA18NL | Outdoor – PUY-AK18NL
Capacities: 18,000 BTU Cooling | 4,700–18,500 BTU Range
Room Size: Ideal for ~750 sq ft
Operating Modes: Cooling Only (24-hour continuous operation)
ENERGY STAR®: No
Refrigerant / Factory Charge: R-454B, 4.6 lb

Key Features

• INVERTER-Driven Compressor: Precise, efficient capacity control

• Low-Ambient Cooling: Operates down to -40°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

Specifications (Rated Conditions)

Cooling Capacity: 18,000 BTU (Max 18,500 | Min 4,700) | EER2: 11.7 | SEER2: 20.1
Moisture Removal: 5.9 pints/hr | Sensible Heat Ratio: 0.65
Electrical: 208/230 V, 1-Ph, 60 Hz | MCA: 16 A | MOCP: 27 A
Airflow (Dry): 403–600 CFM (cooling)
Sound Pressure: Indoor 28–37 dB(A) | Outdoor 44 dB(A)
Piping: Liquid 1/4 in. | Gas 1/2 in. | Max line length: 164 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: PUY-AK18NL cooling-only condenser

Ideal For

Professionals and property managers seeking a quiet, efficient ducted cooling system for commercial or residential spaces requiring reliable, low-ambient operation. The Mitsubishi PEAD-AA18NL & PUY-AK18NL system offers flexible control options, advanced corrosion protection, and superior cooling performance.