Mitsubishi PEAD-AA42NL & PUZ-AK42NL 42,000 BTU 18.7 SEER2 Horizontal-Ducted Heat Pump System - R454B - PEADAA42NL/PUZAK42NL
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.
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
What Our Experts Think
-
42,000 BTU horizontal-ducted heat pump ideal for single-zone spaces up to ~1,750 sq ft.
-
High-efficiency 18.7 SEER2 rating ensures energy-saving, year-round comfort.
-
Concealed ducted design provides discreet installation for residential, office, or light-commercial spaces.
-
Reliable heating and cooling performance in medium to large zones.
-
Uses eco-friendly R454B refrigerant for sustainable operation.
Q&A
-
Q: What size area is suitable for this system?
A: Ideal for single-zone spaces up to ~1,750 sq ft.
-
Q: Can it provide both heating and cooling?
A: Yes, delivers efficient year-round climate control.
-
Q: Where can it be installed?
A: Horizontal-ducted design fits ceilings, attics, or mechanical rooms for concealed operation.
-
Q: What refrigerant does it use?
A: R454B, a low-GWP, environmentally friendly refrigerant.
Maintenance Tips
-
Clean or replace filters monthly to maintain airflow and efficiency.
-
Schedule annual professional maintenance for refrigerant and system checks.
-
Keep outdoor unit free of debris for optimal performance.
-
Inspect ductwork and indoor unit mounting periodically for stability.
-
Ensure condensate lines remain clear to prevent water damage.
