VRF zoning performance with water-based coils: HVRF indoor units use water coils instead of refrigerant-based heat exchangers, supporting safe, efficient operation while maintaining the zoning flexibility of traditional VRF systems. Multiple styles fit a variety of spaces: Available in multiple configurations—such as ductless ceiling cassettes, wall-mounted and ceiling-concealed ducted—HVRF indoor units offer design flexibility for a variety of styles and room types. Integrates directly with Hybrid Branch Controller (HBC): Each indoor unit connects to the Hybrid Branch Controller, receiving hot or chilled water for precise zone control—without refrigerant entering the occupied space. Independent heating and cooling for every zone: HVRF uses the HBC and water loop to let each indoor unit operate independently, so some zones can heat while others cool—delivering precise comfort and improved efficiency in any season. Quiet indoor units ideal for sensitive spaces: Without expansion valves or refrigerant flow indoors, HVRF fan coil units offer quieter operation—ideal for noise-sensitive environments.

Trane® / Mitsubishi Electric HVRF Indoor Units

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Overview

Hybrid indoor units built for safer spaces.

Trane® / Mitsubishi Electric HVRF indoor units use water—not refrigerant—in occupied spaces, supporting zone-level comfort and helping meet institutional code requirements.

System Type: Water-based indoor units
Coil Type: Hydronic heat exchanger coil
Controls Integration: Compatible with Trane® / Mitsubishi Electric controls
Standard Accessories: Built-in condensate lift pump (varies by model), air filters (for ductless units)

Reduced Refrigerant in Occupied Spaces

By using water instead of refrigerant at the terminal units, HVRF systems remove refrigerant from the occupied spaces and helping to reduce the overall refrigerant in the systems as compared with traditional VRF—supporting compliance with safety codes like ASHRAE® 15 and 34.
Precise Room Control in Space‑Limited Applications

As a heat recovery system, HVRF delivers heating and cooling to each room as needed, providing efficient comfort and control. Ideal for hotels, dorms, senior housing, and similar spaces, it offers wall‑mounted, ceiling cassette, and concealed ducted configurations to fit diverse room styles.
Seamless Integration with Hydronic Systems

HVRF indoor units connect to a contained water loop through the Hybrid Branch Controller, with the option to use existing water lines for filling during setup.

Product Information

Key Features

VRF zoning performance with water-based coils: HVRF indoor units use water coils instead of refrigerant-based heat exchangers, supporting safe, efficient operation while maintaining the zoning flexibility of traditional VRF systems.
Multiple styles fit a variety of spaces: Available in multiple configurations—such as ductless ceiling cassettes, wall-mounted and ceiling-concealed ducted—HVRF indoor units offer design flexibility for a variety of styles and room types.
Integrates directly with Hybrid Branch Controller (HBC): Each indoor unit connects to the Hybrid Branch Controller, receiving hot or chilled water for precise zone control—without refrigerant entering the occupied space.
Independent heating and cooling for every zone: HVRF uses the HBC and water loop to let each indoor unit operate independently, so some zones can heat while others cool—delivering precise comfort and improved efficiency in any season.
Quiet indoor units ideal for sensitive spaces: Without expansion valves or refrigerant flow indoors, HVRF fan coil units offer quieter operation—ideal for noise-sensitive environments.

Model Specifications

TPKFYW Wall Mount
- Dual set point functionality
- Compact, lightweight, flat-white, flat-panel, modern design
- Quiet operation
- Multiple fan speed settings
- Easily removed intake grill filter for cleaning
- Back and right-side wiring take-out
- Wireless receiver onboard
TPLFYW 4-Way Ceiling Cassette
- Square edge, sleek design
- 3D turbo fan enabling increased airflow
- Improved occupant comfort
- Four fan speed settings including auto-fan
- Corner pocket design for simplified installation
- Built-in condensate lift mechanism designed to provide up to 33-7/16″ of lift
- Ventilation air intake supported
TPEFYW Low/Medium Static Ducted
- Dual set point functionality
- Multiple fan speed settings
- Auto fan mode
- 9-7/8" (250mm) high for low ceiling heights
- Built-in condensate lift; lifts to 27-9/16" (700 mm)
- Ducted fan coil supporting multiple configurations for flexible installation
- Hydronic based indoor coil
- Built-in manual air vent

Product Literature

Documentation

Your HVRF questions, answered.

What are the components of an HVRF indoor unit?

An HVRF indoor unit typically includes a water coil, fan, filter, control board and cabinet. It uses hot or chilled water from the Hybrid Branch Controller to heat or cool the space.

What HVRF indoor unit types are available?

Trane® / Mitsubishi Electric offers HVRF indoor units in wall-mounted, ceiling cassette (2'x2' and 3'x3') and ceiling-concealed ducted configurations to suit a range of spaces.

How many indoor units can be connected to an HVRF system?

Trane® / Mitsubishi Electric HVRF systems can connect up to 50 indoor units per system, depending on total capacity and design requirements.

Solutions and Support

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