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Trane® / Mitsubishi Electric CITY MULTI®

Efficient, flexible VRF with precise zoning and options for air- or water-source heat pumps, plus heat recovery for simultaneous heating and cooling.

Overview

A variety of system designs for complete flexibility.

Trane® / Mitsubishi Electric CITY MULTI® indoor and outdoor units offer smart zoning, improved energy use and systems to manage refrigerant in occupied spaces.

  1. Extensive Design Options

    Trane® / Mitsubishi Electric CITY MULTI® units support diverse layouts, zoning needs and building types with wide capacity ranges and indoor unit options.

  2. Reliable Comfort

    CITY MULTI® units maintain consistent temperatures across zones with precise control and proven, field-tested system reliability.

  3. Quiet Operation

    Trane® / Mitsubishi CITY MULTI® units reduce noise with advanced compressor technology and quiet indoor units—ideal for noise-sensitive environments.

  4. Smart Integration

    Electric CITY MULTI® units easily integrate with Trane and third-party controls for enhanced performance, monitoring and building automation.

VRF Offerings

Trane® / Mitsubishi Electric Heat Recovery R2 Series

  • System Type: Heat recovery
  • Compressor: Inverter-driven scroll compressor
  • Refrigerant: R-410A transitioning to R32B in 2026
  • Controls Integration: Compatible with Trane® / Mitsubishi Electric controls
  • Standard Accessories: Base pan heater (depending on model), refrigerant sensors, safety controls
Trane® / Mitsubishi City Multi Y Series VRF System

Trane® / Mitsubishi Electric Heat Pump Y Series

  • System Type: Heat pump
  • Compressor: Inverter-driven scroll compressor
  • Refrigerant: R-410A transitioning to R32B in 2026
  • Controls Integration: Compatible with Trane® / Mitsubishi Electric controls
  • Standard Accessories: Base pan heater (depending on model), refrigerant sensors, safety controls

Trane® / Mitsubishi Electric CITY MULTI® Indoor Units

CITY MULTI® indoor units offer ducted and ductless options for flexible design, quiet comfort and energy efficiency in a variety of layouts and applications.

VRF stands for Variable Refrigerant Flow, an HVAC technology that uses a single outdoor unit connected to multiple indoor units. It modulates the amount of refrigerant sent to each indoor unit, allowing precise temperature control, energy efficiency and zoning flexibility within the same system.

A heat pump VRF system can switch between heating and cooling, but all connected indoor units must operate in the same mode at any given time. This makes heat pumps ideal for open layouts or spaces with uniform comfort needs.

A heat recovery VRF system, on the other hand, uses a branch controller to manage refrigerant flow so that some zones can heat while others cool simultaneously. This is particularly valuable for buildings with mixed-use spaces or varying sun exposure. Heat recovery systems typically helps improve energy efficiency by transferring heat from zones requiring cooling to zones requiring heating.

A traditional VRF system circulates refrigerant directly to indoor units for both heating and cooling. All piping, including in occupied spaces, carries refrigerant.

 A hybrid VRF system uses refrigerant between the outdoor unit and a Hybrid Branch Controller but distributes water to indoor units instead of refrigerant. This design reduces refrigerant volume inside occupied spaces, helping with safety compliance (A2L refrigerants), lowers leak risk and simplifies maintenance.

VRF systems are best suited for buildings that need flexible, zone-level temperature control. With compact equipment, less ductwork and inverter-driven efficiency, VRF is ideal for projects prioritizing energy savings, electrification or space constraints.