Efficiency with air and water options: Our systems offer air-source and water-source configurations, giving you the flexibility needed to help provide (or offer) efficiency across a wide range of building applications. Two-pipe system reduces complexity and cost: The Y Series uses a simplified two-pipe design that delivers either heating or cooling, requiring fewer materials and connections than three-pipe systems to support easy installation and reduce project cost. Flexible capacity from 6 to 36 tons: Offered in single or modular configurations, the Y Series supports a wide range of applications—from small office spaces to large, multi-story buildings—thanks to its scalable 6- to 36-ton capacity range. Inverter technology adjusts to demand: Variable-speed inverter compressors match system output to actual load conditions in real time, enhancing energy efficiency and maintaining consistent comfort across all zones. Long piping runs enable flexible layout: With maximum piping runs of up to 541 feet and vertical separation of up to 164 feet, the Y Series offers installation flexibility in tall or widely spaced building configurations. Compatible with Tracer® SC+ BAS: Y Series systems integrate with Tracer® SC+ and other BAS platforms for centralized control, monitoring and optimization of VRF system performance. Optional enhancements for cold climates: Add-on components allow the Y Series to maintain heating performance in low ambient temperatures, expanding its suitability for colder climate zones.

Trane® / Mitsubishi Electric Heat Pump Y Series

Trane® / Mitsubishi City Multi Y Series VRF System

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Overview

Traditional VRF for consistent zones.

Trane® / Mitsubishi Electric Heat Pump Y Series delivers efficient, all-season comfort—ideal for buildings where all spaces share consistent heating and cooling requirements.

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

Reliability You Can Count on year-Round

Designed for dependable performance in a range of climates, the Y Series delivers heating or cooling whenever it's needed. No seasonal system changeouts required.
Ideal for Buildings that Don’t Need it All at Once

For applications with consistent heating or cooling demands, Y Series outdoor units streamline both design and installation.
Supports Decarbonization Goals

As an all-electric system, the Y Series helps building owners reduce reliance on fossil fuels and help move toward sustainability targets without compromising comfort.

Product Information

Key Features

Efficiency with air and water options: Our systems offer air-source and water-source configurations, giving you the flexibility needed to help provide (or offer) efficiency across a wide range of building applications.
Two-pipe system reduces complexity and cost: The Y Series uses a simplified two-pipe design that delivers either heating or cooling, requiring fewer materials and connections than three-pipe systems to support easy installation and reduce project cost.
Flexible capacity from 6 to 36 tons: Offered in single or modular configurations, the Y Series supports a wide range of applications—from small office spaces to large, multi-story buildings—thanks to its scalable 6- to 36-ton capacity range.
Inverter technology adjusts to demand: Variable-speed inverter compressors match system output to actual load conditions in real time, enhancing energy efficiency and maintaining consistent comfort across all zones.
Long piping runs enable flexible layout: With maximum piping runs of up to 541 feet and vertical separation of up to 164 feet, the Y Series offers installation flexibility in tall or widely spaced building configurations.
Compatible with Tracer® SC+ BAS: Y Series systems integrate with Tracer® SC+ and other BAS platforms for centralized control, monitoring and optimization of VRF system performance.
Optional enhancements for cold climates: Add-on components allow the Y Series to maintain heating performance in low ambient temperatures, expanding its suitability for colder climate zones.

Product Specifications

TUHY
- System Type: Air-source heat pump
- Cooling Capacity: 72,000-120,000 BTU/H
- Heating Capacity: 80,000-135,000 BTU/H
- Power Source: 208/230V, 460V, 3-phase, 60Hz
- Guaranteed Operating Range: -22–126°F (-30–52°C)
TUHYE
- System Type: Air-source heat pump
- Cooling Capacity: 72,000-432,000 BTU/H
- Heating Capacity: 80,000-480,000 BTU/H
- Power Source: 208/230V, 460V, 3-phase, 60Hz
- Guaranteed Operating Range: -13–126°F (-25–52°C)
TUHYH
- System Type: Air-source heat pump
- Cooling Capacity: 72,000-240,000 BTU/H
- Heating Capacity: 80,000-270,000 BTU/H
- Power Source: 208/230V, 460V, 3-phase, 60Hz
- Guaranteed Operating Range: -22°F–126°F (-30°C–52°C)
TQHY
- System Type: Water-source heat pump
- Cooling Capacity: 216,000-288,000 BTU/H
- Heating Capacity: 243,000-323,000 BTU/H
- Power Source: 208/230V, 460V, 3-phase, 60Hz
- Guaranteed Operating Range: Cooling (indoor) 59°F–75°F WB (15°C–24°C), heating (indoor) 59°F–81°F DB (15°C–27°C)
- Water Loop Range: 50°F–113°F (10°C–45°C), 23°F (-5°C) with glycol

Product Literature

Documentation

FAQs

Your electric heat pump questions, answered.

How does a VRF heat pump system work?

A VRF heat pump system provides either heating or cooling to all indoor zones at the same time. It works by circulating refrigerant between an outdoor unit and multiple indoor units. In heating mode, the system pulls heat from the outdoor air and transfers it indoors; in cooling mode, it removes heat from the building and releases it outside.

All zones must be in the same mode (heating or cooling), so it’s best suited for buildings with similar thermal needs across spaces.

Is the Trane® / Mitsubishi Electric Y Series effective in extremely cold or hot climates?

Yes, the Y Series is designed for reliable performance in a wide range of conditions. It can provide heating in outdoor temperatures as low as -22°F and cooling in temperatures up to 115°F.

In very cold regions, optional enhancements like base pan heaters or wind baffles may be recommended to maintain peak performance. Always consult system specifications and local climate needs during design.

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