HVRF Outdoor

City Multi HVRF outdoor units deliver optimum comfort and efficiency using an innovative combination of unique 2-pipe refrigeration and water. They provide a complete modern solution for offices, hotels, medical centres, schools, high rise buildings, shopping centres and other commercial buildings.

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HVRF Indoor

Using water based fan coils, the HVRF Indoor Units are available in ducted, cassette and floor mount chassis. They are based on Mitsubishi Electric VRF indoor units.

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HBC Controllers HVRF

At the heart of the HVRF system is a HBC (Hybrid Branch Controller) box, which is connected to the outdoor unit via traditional refrigerant piping. Between the HBC box and the indoor fan coils, the system uses water piping but still offers high sensible cooling and stable room temperatures for maximum comfort.

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What is Hybrid VRF?

Hybrid VRF is an air conditioning system for large scale applications. It’s a 2-pipe heat recovery VRF with water between the Hybrid Brand Controller (HBC) and indoor units,

HVRF is a quick, easy and flexible to design and install using the same control and network as VRF systems. The decentralised system means phased installation is possible with the same high levels of seasonal efficiency expected with VRF.

Hybrid VRF provides comfortable and stable air temperature control without refrigerant in occupied spaces; removing the need for leak detection.


Download infographic The Ultimate guide to Hybrid air conditioning
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Looking for help with installation?

If you need help with your Air Conditioning project, check out our Find An Installer page and get in touch with one of our trusted installer and technician partners.


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Benefits of Mitsubishi Electric City Multi HVRF

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Wide range of connectable indoor units

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Flexible application options

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High sensible cooling and stable room temperatures

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Wide range of connectable indoor units

The system can be expanded by using a combination of Sub-HBC boxes, allowing up to 50 indoor units, from ducted, ceiling cassette, floor mounted or wall mounted types to be supplied by one outdoor condenser.

Flexible application options

Air Source YNW (22-56kW) - Using the latest City Multi VRF YNW technology, including an aluminium heat exchanger, reduced weight and improved seasonal efficiency.

Water Source YLM (22-56kW) - Ideal where outdoor space is limited, building heat recovery and efficiency is demanded and a water loop is is available.

High sensible cooling and stable room temperatures

Typically 10% increase in sensible cooling vs standard VRF Provides a gradual rate of change of temperature within the
air conditioned space, delivering a comfortable and stable environment.

Frequently Asked Questions

How does a Hybrid VRF system work?

City Multi Hybrid VRF is a 2-pipe heat recovery VRF with water between the Hybrid Branch Controller (HBC) and indoor units. You can install and design it as VRF whilst enjoying the features of a Chiller system.

What is an HBC Controller?

A Hybrid Branch Controller (HBC) makes simultaneous heating and cooling possible. They are available as a 6, 8 or 16 port model. Valves, pumps and the heat exchanger are all contained with the Main-HBC allowing for phased, manageable installation – ideal for CAT A to CAT B applications.

View our Hybrid VRF YouTube playlist

View our Hybrid VRF Document Library

Watch our Vertical Branch Controller Launch Webinar