Mitsubishi PKA-AL18NL & PUY-AK18NL 18,000 BTU 19.5 SEER2 Wall Mounted Cooling Only System - R454B

Mitsubishi PKA‑AL18NL & PUY‑AK18NL: 18,000 BTU Wall‑Mounted Cooling‑Only Mini‑Split System

The Mitsubishi PKA‑AL18NL indoor unit paired with the PUY‑AK18NL outdoor condenser delivers efficient 18,000 BTU cooling with advanced inverter technology and commercial-grade durability. Designed for single‑zone applications, this high‑efficiency mini‑split system offers reliable, quiet comfort for spaces up to ~750 sq ft. With cooling performance maintained down to 0°F outdoor temperatures and low-GWP R‑454B refrigerant, this system is ideal for year-round operation in heat-sensitive environments.

General Information

System Type: Wall‑mounted ductless air handler + single‑zone cooling‑only condenser
Models: Indoor – PKA‑AL18NL | Outdoor – PUY‑AK18NL
Capacities: 18,000 BTU Cooling
Room Size: Ideal for up to ~750 sq ft
Operating Modes: Cooling only
ENERGY STAR®: Yes
Refrigerant / Factory Charge: R‑454B, pre‑charged

Key Features

INVERTER Technology: Variable-speed compressor for precise and energy-efficient cooling
Low Ambient Cooling: Maintains full cooling capacity at outdoor temperatures down to 0°F
Commercial-Grade Build: Engineered for continuous operation in light-commercial settings such as server rooms, offices, and retail spaces
Durable Construction: Features Blue Fin anti-corrosion coating and dual-barrier protection for long-term reliability
Quiet Operation: Indoor sound levels as low as 34 dB(A) for discreet performance
Smart Control Ready: Compatible with wired and wireless controllers, including Mitsubishi’s Kumo Cloud app
Airflow Control: Adjustable vanes and auto-swing mode promote even air distribution throughout the room

Specifications (Rated Conditions)

Cooling Capacity: 18,000 BTU | SEER2: 19.5 | EER2: 11.0
Cooling Range: 4,300–18,000 BTU
Electrical: 208/230 V | 1‑Ph | 60 Hz
Airflow (Dry): Up to 450 CFM
Sound Pressure: Indoor 34–48 dB(A) | Outdoor 51 dB(A)
Piping: Liquid ¼ in. | Gas ½ in. | Max line length 165 ft | Max height 100 ft
Indoor Dimensions / Weight: 35-11/32" x 9-11/32" x 11-25/32" | 28 lbs
Outdoor Dimensions / Weight: 34-19/64" x 11-13/16" x 24-13/16" | 112 lbs
Drain Connection: ⅝ in. O.D.

Included Components

Indoor Unit: PKA‑AL18NL wall‑mounted air handler
Outdoor Unit: PUY‑AK18NL cooling-only condenser

Ideal For

Homeowners, contractors, and commercial users needing an efficient, high-performance cooling-only system for server rooms, retail spaces, classrooms, or offices. Built for continuous use with dependable low ambient operation and quiet comfort in heat-sensitive environments.