Cooling EfficiencyUp to 27 SEER
Energy SavingsAn Average of 48%
Ductless Mini-Split Heat Pump


4MXW27 Description

This indoor ductless heating and cooling unit works as part of a ductless mini-split or multi-split system. Mounted on the wall, this ductless unit offers flexible, high-efficiency heating and cooling for precise comfort without the ductwork.



Ductless System

Composed of three main components—an indoor unit consisting of a coil and a fan, an outdoor compressor unit and a remote control—most ductless heating and cooling split systems are connected by refrigerant lines and require no ductwork. The indoor unit can be mounted on the wall or in the ceiling.

Efficient Comfort

Trane’s ductless heating and cooling systems have Seasonal Energy Efficiency Ratings (SEER) ranging from 16.00 to 22.00, making the systems remarkably efficient and environmentally friendly.

Design Flexibility

Since there is no ductwork to install, it’s easy to add Trane’s ductless heating and cooling units to any home, in any room desired. It’s an economical and efficient option for homes without an existing ducted system or when adding ductwork may be impractical or too expensive.

Zone Control

With a multi-split system, between two and five indoor units—depending on the indoor model—can be connected to just one outdoor unit, providing the exact degree of comfort you require room to room or zone by zone.



4MXW27 Ductless Heating and Cooling Unit

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Every Trane ductless system consists of an indoor and an outdoor unit. Trane indoor units feature:

  • Quiet Design - Specially designed air vent efficiently reduces operation noise, as low as 23 dB.
  • Turbo Function/Fan Speed - High speed operation quickly reaches desired temperature. Seven fan speeds from Quiet to Turbo maximize your comfort experience.
  • Sleep Mode Function - Temperature rises/falls automatically to maintain room comfort and save energy while you sleep.
  • Auto Clean/Triple Filtration - Fan runs when unit is stopped to reduce moisture and inhibit the development of bacteria, and the triple filtration further cleans the air that you breathe.
  • Anti-cold Design - To prevent blowing cold air directly to the room, air is pre-heated during heating operation.
  • Timer - Operate the unit automatically only when you want by setting the timer.
Trane Product

Trane Warranty

Trane HVAC Product

Protect your 4MXW27 with one of our top of the line warranties

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Estimated energy savings of48%Savings based on the rating of a matched system
Energy Savings

Save an estimated 48% in energy costs with this unit.

System efficiency is measured in SEER, (Seasonal Energy Efficiency Ratio) and HSPF (Heating Seasonal Performance Factor). The higher the SEER and HSPF, the greater the system’s energy efficiency, and the lower the overall carbon footprint of your household.