Mitsubishi MSZ-FX12NL 12,000 BTU Wall Mounted Indoor Unit - R454B

Mitsubishi MSZ‑FX12NL – 12,000 BTU R‑454B Wall-Mounted Indoor Unit

Deliver powerful, energy-efficient comfort with the Mitsubishi MSZ‑FX12NL, a sleek FX-Series wall-mounted indoor unit designed for precise climate control in medium-sized spaces.

Modern, Space-Saving Design
The MSZ‑FX12NL’s slim profile and contemporary styling make it an unobtrusive addition to any room, ideal for living rooms, larger bedrooms, or offices up to ~500 sq ft.

Quiet, Efficient Operation
Operating at sound levels as low as 25 dB(A), this unit combines Mitsubishi’s advanced INVERTER technology with a 12,000 BTU cooling capacity and up to 15,000 BTU heating (paired with a compatible outdoor unit) for consistent, energy-saving comfort.

Enhanced Air Quality & Smart Features
Equipped with advanced filtration and Dual Barrier Coating to reduce allergens and dirt, the MSZ‑FX12NL supports optional Wi-Fi control via the Mitsubishi Comfort Control app for convenient remote operation.

Single-Zone Flexibility
Pairs with MUZ or SUZ-FX outdoor units in single-zone applications. Features multiple comfort modes including Smart Dry+, Powerful, and Econo Cool to optimize performance year-round.

Trusted Mitsubishi Durability
Backed by Mitsubishi’s industry-leading 10-year parts warranty when installed and registered by a licensed contractor, the MSZ‑FX12NL offers lasting comfort and peace of mind.