Mitsubishi PEAD-AA42NL & PUY-AK42NL 42,000 BTU 18.7 SEER2 Horizontal-Ducted Cooling Only System - R454B - PEADAA42NL/PUYAK42NL
The Mitsubishi PEAD-AA42NL paired with the PUY-AK42NL outdoor unit delivers powerful, efficient cooling in a 42,000 BTU single-zone ducted system (Max 44,000 | Min 14,200). Designed for rooms up to ~1,750 sq ft, it’s ideal for large living spaces, offices, or areas 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 extreme conditions. The slim 9-7/8″ height indoor unit fits into tight ceiling cavities or soffits. The indoor unit includes a built-in condensate lift (up to 27-9/16″) for flexible drainage. The outdoor unit is protected with Blue Fin and seacoast coatings for corrosion resistance in coastal or industrial environments.
Enjoy quiet operation with indoor sound levels of 37 to 45 dB(A) depending on fan stage, and outdoor sound of 52 dB(A). Controls include wired & wireless remotes, third-party thermostat interfaces, and smartphone access via the Comfort (kumo) app.
Features
INVERTER-Driven Compressor: Efficient, precise modulation
Low-Ambient Cooling: Full capacity down to –40 °F with wind baffles
Built-In Condensate Lift: Up to 27-9/16″ for flexible drain routing
Compact Design: 9-7/8″ height for tight ceiling spacing
Quiet Operation: Indoor 37–45 dB(A), outdoor 52 dB(A)
Seacoast & Blue Fin Protection: Corrosion resistance for harsh environments
Smart Controls: Compatible with Comfort app, wired/wireless remotes, third-party thermostats
Continuous Cooling: 24-hour operation for consistent comfort
What Our Experts Think
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42,000 BTU horizontal-ducted cooling system ideal for single-zone spaces up to ~1,750 sq ft.
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Efficient 18.7 SEER2 rating ensures energy-saving, continuous cooling.
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Wide capacity range: 14,200 BTU (min) to 44,000 BTU (max) for precise climate control.
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Concealed ducted design fits ceilings, attics, or mechanical rooms for discreet operation.
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Uses eco-friendly R454B refrigerant for sustainable performance.
Q&A
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Q: What size area is suitable for this system?
A: Ideal for single-zone spaces up to ~1,750 sq ft.
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Q: Can it provide consistent cooling?
A: Yes, designed for continuous, efficient cooling in large rooms or offices.
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Q: Where can it be installed?
A: Horizontal-ducted design allows concealed installation in ceilings or mechanical rooms.
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Q: What refrigerant does it use?
A: R454B, a low-GWP, environmentally friendly refrigerant.
Maintenance Tips
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Clean or replace filters monthly to maintain airflow and efficiency.
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Schedule annual professional maintenance for refrigerant and system checks.
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Keep outdoor unit free of debris for optimal performance.
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Inspect ductwork and indoor unit mounting periodically for stability.
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Ensure condensate lines remain clear to prevent water damage.
