Mitsubishi PEAD-AA42NL & PUZ-AK42NL 42,000 BTU 18.7 SEER2 Horizontal-Ducted Heat Pump System - R454B

Mitsubishi PEAD-AA42NL & PUZ-AK42NLHZ: 42,000 BTU Ducted Concealed Hyper-Heat Pump System

The Mitsubishi PEAD-AA42NL paired with the PUZ-AK42NLHZ outdoor unit provides efficient, reliable heating and cooling in a 42,000 BTU single-zone ducted system. Designed for large zones (comparable to ~1,750 sq ft), it’s ideal for residential, office, or light-commercial spaces needing concealed, year-round comfort.

Featuring an INVERTER-driven Hyper-Heating compressor, built-in condensate lift (up to 27-9/16″), and wide external static pressure range (0.14-0.60 in. WG), this slim 9-7/8″ ceiling-concealed indoor unit supports flexible ducting and precise airflow. The outdoor unit includes a base pan heater and fast start-up capability to maintain performance in cold climates. Outdoor components are protected with Blue Fin and seacoast anti-corrosion coatings for durability in harsh environments.

Enjoy quiet operation, with indoor sound levels in cooling/heating from 37 to 45 dB(A) and full control options via the Comfort (kumo) app, wired/wireless remotes, and third-party interfaces.

General Information

System Type: Ducted concealed indoor unit + single-zone hyper-heat pump outdoor unit
Models: Indoor – PEAD-AA42NL | Outdoor – PUZ-AK42NLHZ
Capacities: 42,000 BTU Cooling | 42,000 BTU Heating (Hyper-Heat)
Room Size: Ideal for ~1,750 sq ft (or comparable large zones)
Operating Modes: Heating & Cooling (continuous cooling supported)
ENERGY STAR®: Yes
Refrigerant / Factory Charge: R-454B

Key Features

INVERTER compressor with Hyper-Heating capability: reliable heating in cold climates
Built-in condensate lift (up to 27-9/16″) for simple drainage in tight installs
Slim, concealed 9-7/8″ indoor profile for tight ceiling cavities
Wide external static pressure range (0.14–0.60 in. WG)
Quiet operation: 37–45 dB(A) indoor
Base pan heater & fast start-up outdoor for cold climate reliability
Blue Fin & seacoast protection against corrosion
Smart control compatibility including app, wired/wireless remotes, third-party integrations

Specifications (Rated Conditions)

Indoor Airflow (Cooling/Dry): 1,042 / 1,148 / 1,254 / 1,483 CFM
Sound Pressure Levels (Cooling / Heating): 37 / 39 / 41 / 45 dB(A)
External Static Pressure: 0.14, 0.20, 0.28, 0.40, 0.60 in. WG
Drain Connection: 1-1/4 in. O.D.
Electrical (Indoor Unit): MCA 4.25 A, Fan Motor 300 W
Outdoor Features: Blue Fin & seacoast coatings, base pan heater, fast start-up heating
Multiple control options, compatibility with short-run ductwork, optional FB filter boxes

Included Components

Indoor Unit: PEAD-AA42NL ducted concealed unit
Outdoor Unit: PUZ-AK42NLHZ hyper-heat pump condenser

Ideal For

Homeowners, contractors, and light-commercial professionals seeking a high-capacity, quiet, high-performance ducted heat pump for large single-zone spaces. The PEAD-AA42NL & PUZ-AK42NLHZ pairing delivers balanced heating and cooling, reliable cold climate performance, durable outdoor protection, and flexible smart controls.