Mitsubishi PLA-AE42NL 42,000 BTU Four-Way Ceiling Cassette Indoor Unit (Unit Only) - R454B

Mitsubishi PLA‑AE42NL – 42,000 BTU R‑454B Four‑Way Ceiling‑Cassette Indoor Unit

Experience professional-grade, single‑zone comfort with the Mitsubishi PLA‑AE42NL, a robust ceiling‑cassette indoor unit crafted for residential and light‑commercial spaces up to ~1,750 sq ft. 

Slim, Discreet Design
Measuring 33‑1/16″ × 33‑1/16″ × 11‑3/4″, this low‑profile chassis incorporates a four‑way airflow grille and 72 configurable vane patterns to seamlessly blend into ceiling architectures while delivering adjustable airflow up to 1,200 CFM.

Smart, Efficient Operation
Equipped with Mitsubishi’s 3D i‑see Sensor®, the unit scans for temperature and occupancy to optimize comfort and energy savings. Inverter‑driven fan motor offers multiple speeds, with whisper‑quiet operation between 34–45 dB(A).

Year‑Round Climate Control
Provides both cooling and heating with capacity from 42,000 BTU in cooling and up to 49,600 BTU in heating at 47 °F. Supports full cooling performance down to 0°F (with baffles) and efficient heating to –13 °F.

Advanced Indoor Air Quality
Features a washable, easy‑clean filter and optional high‑efficiency filter inserts. Built‑in condensate lift mechanism handles up to 33‑15/32″ of vertical rise, preventing overflow. Grille includes filter‑indicator for maintenance alerts. 

Smart & Flexible Control
Compatible with wired/wireless MA-series remotes, the Comfort app, and integrates with third‑party systems through BACnet or Modbus interfaces. 

Durable & Dependable
Built with anti‑corrosion Blue Fin coil protection, available wind‑baffle knockouts for low‑ambient operation, pre‑charged for line‑sets up to 225 ft, and rated for seacoast environments. Factory charged with eco‑friendly R‑454B.

Warranty & Certification
ENERGY STAR® certified with a 10‑year parts warranty (installation and registration required). Ideal for classrooms, retail, offices, or large open spaces needing quiet, efficient, and intelligent ceiling‑mounted climate control.