Duct-Free Systems

Explore duct-free heating and cooling for individual rooms, rating terminology, and Mitsubishi Electric model families described in older product listings.

Duct-free systems can serve one room or selected spaces without conventional supply ducts to every room. Outdoor and indoor units are matched as a system; a multi-zone outdoor unit can serve multiple indoor units, subject to its design limits. Model availability and compatibility should be confirmed for the project.

SEER/SEER2 and EER/EER2 compare cooling efficiency; HSPF/HSPF2 compare heating efficiency. SEER2 and HSPF2 use updated Department of Energy rating methods: EER2 is measured at a 95°F cooling condition, while SEER2 reflects seasonal operation. Minimum standards may depend on region and change over time, so check current requirements and compare like rating systems.

Through-the-wall packaged terminal air conditioners (PTACs) and duct-free systems are two equipment types used for individual-room needs.

Duct-free model families and specifications

  • M-Series Deluxe wall-mounted single-zone heat pump, outdoor unit — MUZ-FX; listed for heating and cooling, up to 35 SEER2 and 13.3 HSPF2, with R-454B.
  • M-Series Premier wall-mounted single-zone heat pump, outdoor unit — MUZ-GX; listed for heating and cooling, up to 28.4 SEER2 and 11 HSPF2, with R-454B.
  • P-Series single-zone Universal heat-pump outdoor unit — SUZ-AA; heat and cool; up to 21.7 SEER2 and 12.9 HSPF2; R-454B.
  • Multi-zone heat-pump outdoor unit — MXZ family; up to 20 SEER2 and 10 HSPF2; R-454B.
  • FX Deluxe wall-mounted indoor unit — MSZ-FX; single zone; efficiency depends on the outdoor unit.
  • GX Premier wall-mounted indoor unit — MSZ-GX; single zone; efficiency depends on the outdoor unit.
  • Wall-mounted indoor units — MSZ-HX and MSZ-WX families; heat and cool; efficiency depends on the outdoor unit.
  • Cooling-only wall-mounted indoor unit — MSY-GX family; cooling only; efficiency depends on the outdoor unit.
  • PKA wall-mounted air-conditioner indoor unit — PKA family; cooling only; efficiency depends on the outdoor unit.
  • M-Series cooling-only outdoor unit — MUY-GX; up to 28.4 SEER2; R-454B.
  • Single-zone Universal air-conditioner outdoor unit — PUY family; up to 21.1 SEER2; R-454B.
  • PEAD horizontal-ducted indoor heat pump — PEAD; single- and multi-zone; up to 21.1 SEER and 13.0 HSPF as listed; R-410A.

Mitsubishi M- and P-Series product brochure

Model names and specifications on this page are reference information only; they do not confirm current stock, pricing, or compatibility. Models, configurations, and ratings can change. Contact Komfort Kings to confirm current offerings and product details.

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