Mitsubishi PKA-AL18NL & PUZ-AK18NL 18,000 BTU 19.5 SEER2 Wall Mounted Heat Pump System - R454B

Mitsubishi PKA‑AL18NL & PUZ‑AK18NL: 18,000 BTU Wall-Mounted Hyper-Heat Pump System

The Mitsubishi PKA‑AL18NL indoor unit paired with the PUZ‑AK18NL outdoor condenser delivers efficient 18,000 BTU cooling and powerful heating with Hyper-Heat technology. Designed for single-zone applications, this inverter-driven mini-split system provides dependable, quiet comfort for large spaces up to ~750 sq ft, even in harsh winter conditions down to -13°F. It operates with low-GWP R-454B refrigerant and features durable construction for reliable performance.

General Information

• System Type : Wall-mounted ductless air handler + single-zone Hyper-Heat pump condenser

• Models : Indoor – PKA‑AL18NL | Outdoor – PUZ‑AK18NL

• Capacities : 18,000 BTU Cooling | Heating capacity varies with outdoor temperature

• Room Size : Ideal for up to ~750 sq ft

• Operating Modes : Heating & Cooling

• ENERGY STAR® : Yes

• Refrigerant / Factory Charge : R‑454B, pre-charged

Key Features

• INVERTER Technology : Variable-speed compressor for energy-efficient, responsive performance

• Hyper-Heating Performance : Maintains strong heating capacity at low outdoor temperatures down to -13°F

• Single-Zone Focus : Engineered specifically for reliable single-zone comfort in large residential or commercial spaces

• Durable Construction : 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 comfort

• Smart Control Ready : Compatible with wired/wireless controllers and Mitsubishi Comfort app for flexible system management

• Low Ambient Cooling : Supports cooling operation down to 0°F for versatile year-round use

Specifications (Rated Conditions)

• Cooling Capacity : 18,000 BTU | SEER2: up to 19.5 | EER2: 11.0

• Heating Capacity @ 47°F : Up to 23,600 BTU | HSPF2: 8.9

• Heating Capacity @ -4°F : 8,900 BTU

• Electrical : 208/230 V | 1-Ph | 60 Hz

• Airflow (Dry) : 215-375 CFM

• Sound Pressure : Indoor 34–48 dB(A) | Outdoor 44-46 dB(A)

• Piping : Liquid ¼ in. | Gas ½ in. | Max line length 100 ft | Max height 100 ft

• Indoor Dimensions / Weight : 35-11/32 x 9-11/32 x 11-25/32 in. | 28 lbs

• Outdoor Dimensions / Weight : 34-19/64 x 11-13/16 x 24-13/16 in. | 99.21 lbs

• Drain Connection : ⅝ in. O.D.

Included Components

• Indoor Unit : PKA‑AL18NL wall-mounted air handler

• Outdoor Unit : PUZ‑AK18NL Hyper-Heat condenser

• Remote Controller : Hand-held or wall-mounted controller (varies by package)

Ideal For

Homeowners, contractors, and commercial users seeking a high-capacity, energy-efficient mini-split system that delivers powerful heating and cooling with Hyper-Heat technology. Perfect for large rooms or open spaces requiring quiet, dependable year-round comfort—even in cold climates.