Mitsubishi MSZ-FX18NL 18,000 BTU Wall Mounted Indoor Unit - R454B

Mitsubishi MSZ‑FX18NL – 18,000 BTU R‑454B Wall-Mounted Indoor Unit

Maximize comfort in larger rooms with the Mitsubishi MSZ‑FX18NL, a powerful FX-Series wall-mounted indoor unit designed for quiet, energy-efficient performance and advanced zone control.

Modern, Space-Saving Design
With its sleek profile and compact footprint, the MSZ‑FX18NL fits seamlessly into living rooms, basements, or open-concept areas up to ~750 sq ft. Its minimalist design blends into any décor.

Powerful & Quiet Performance
Delivering 18,000 BTU of cooling and up to 21,600 BTU of heating (when paired with a compatible condenser), this unit uses INVERTER technology to maintain consistent comfort while operating as quietly as 29 dB(A).

Advanced Air Quality & Smart Features
Dual Barrier Coating, multi-stage filtration, and optional Wi-Fi compatibility allow for cleaner air and app-based temperature control through the Mitsubishi Comfort Control app or compatible smart systems.

Tailored Single-Zone Operation
Pairs with MUZ-FX outdoor units for efficient, single-zone climate control. Offers multiple comfort modes including Powerful, Smart Dry+, and Econo Cool for customized operation in any season.

Mitsubishi Quality & Warranty
Backed by Mitsubishi’s outstanding 10-year parts warranty when installed and registered by a licensed contractor, the MSZ‑FX18NL delivers reliable, long-lasting comfort and control.