VRF Systems

Trane® / Mitsubishi all-electric VRF systems meet specific space and operational priorities. Heat one zone, cool another, assist efficient ventilation with a dedicated outdoor air system, and integrate with your building automation system. Our specialists support you from design to installation.

Overview

Helping you deliver VRF systems that fit, perform and endure.

We understand VRF is not one-size-fits-all. Trane® / Mitsubishi Electric commercial VRF systems offer flexible configurations with a dedicated outdoor air system (DOAS) and open integration protocols to meet building demands. Trane provides VRF expertise, controls, and responsive service from design to daily operations.

Energy Efficiency

Heat recovery technology in VRF systems provide simultaneous heating and cooling, with advanced controls for demand control ventilation, energy recovery, and dedicated outdoor air systems.
Customizable

Trane VRF systems are available in flexible traditional and hybrid VRF solutions, outdoor heat pump or heat recovery options, as well as a variety of indoor units to meet building needs.
Operational Ease

VRF systems feature simplified setup and management, plus integration with Tracer® SC+ and centralized controls.
Future-Ready Systems

VRF systems can support electrification, decarbonization, and low-GWP goals. With Trane’s regulatory expertise and future-ready design, confidently plan for what’s ahead.
All-Inclusive Offerings

Trane® / Mitsubishi Electric VRF systems offer comprehensive components and services from design to post-sale, with service and maintenance expertise after installation.

Extensive VRF System Solutions

Choose from two proven VRF technologies—CITY MULTI® VRF and HVRF—alongside essential components like advanced controls and LEV kits, all backed by practical, building-specific advice and expert support.

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.

Trane® / Mitsubishi Electric HVRF

System Type: 100% electric heat recovery
Compressor: Inverter-driven scroll compressor
Refrigerant: R-410A
Controls Integration: Compatible with Trane® / Mitsubishi Electric controls

Your tailored system design starts here.

Trane experts configure VRF systems from evaluation to implementation to meet your building’s requirements and operational goals.

Heat pump or heat recovery? Heat pump systems offer individual zone temperature control with single mode operation, providing either heating or cooling. Heat recovery systems provide simultaneous heating and cooling and require a branch controller.
How often will you manage humidity? With outdoor air treatment only, ventilation equipment will bring outside air to a space-neutral dew-point temperature. If space humidity is a concern, a terminal system at design- and part-load operation—as well as ventilation systems—is necessary.
How should ventilation air be conditioned? Supplying air ventilation to a building requires a filter and fan setup at a minimum. Many building energy codes also require exhaust-air energy recovery. As a result, a basic ventilation system might consist of an energy recovery ventilator (ERV). For additional air treatment, including humidity control, there often needs to be a dedicated outdoor air system (DOAS) too.
Should the system be controlled with independent or integrated controls? Controls are necessary to enable and operate commercial VRF and ventilation systems. In some applications, it might be acceptable to control both systems independently. In other cases, close coordination may require an integrated control system.

Download System Catalog

Your VRF system questions, answered.

What is a VRF system?

A VRF (Variable Refrigerant Flow) system is a highly adaptive, electrified, multiple zone thermal management solution with separate ventilation systems to help offer adequate indoor air quality and improved sustainability. 

How does a VRF system work?

VRF systems work by adjusting refrigerant volume to meet a building’s heating or cooling needs. Indoor units relay temperature requirements to the outdoor unit, which then modulates the refrigerant flow and compressor speed to offer exceptional comfort.

Resources & Insights

Learn from our experts.

- Webinar
What Engineers Need to Know: The Impact of A2L Refrigerants on VRF System Design and Installation

Explore the A2L refrigerant transition for VRF and Ductless systems, focusing on its impact on design and installation.
- Webinar
How to Avoid Common Pitfalls in the Design and Installation of VRF Systems

At Trane, we want to help make sure every VRF project you have is a success. We recognize that VRF design and installation can be complex due to its nature and variety of manufactures with unique installation rules.
- Webinar
Design Considerations for Commercial VRF Systems

Designing a Variable Refrigerant Flow (VRF) System for your next project doesn’t have to be complicated. In this session, you will learn how to break down VRF System design into a 4-step process, including system type, humidity control, ventilation, and system control.
- Whitepaper
Pairing Building Automation and VRF Systems

Trane's Tracer SC+ building automation system elevates Trane / Mitsubishi Electric VRF system performance through energy optimization, data analytics, and remote connectivity. Pairing these technologies in commercial spaces maximizes efficiency and helps achieve decarbonization goals.
- Whitepaper
Applying VRF Systems in Cold Climate Applications

All-electric variable refrigerant flow (VRF) systems are positioned to replace fossil fuel burning equipment in almost any climate. Modern VRF systems far exceed the capabilities of conventional heat pumps at cold outdoor temperatures, as low as -31°F. When applied according to best practices and considerations for winter weather, today’s VRF systems can serve as the primary heating and cooling system, without requiring auxiliary heat.

Susanna Hanson