–Air renewal ventilation

Enhance IAQ effortlessly with 1-way and 2-way ventilation solutions for VRF & split systems, ensuring precise temperature management and efficiency.

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Ventilation solutions that are easy for customers to operate

Many ventilation solutions are overly-complex resulting in HVAC systems which become unbalanced, leading to higher energy bills for building operators and businesses, and wasted hardware that doesn’t fulfill it’s job properly. Hitachi’s approach to ventilation is to simplify, integrating control of the ventilation unit with a VRF, commercial split system or chiller using H-LINK wiring, and in many cases, integrating refrigerant piping into the unit to pre-cool or heat the outside air to unify it with the indoor set temperature.

– 1-way ventilation units for air renewal in VRF

Hitachi’s Outside Air Process unit, called "All Fresh Air Unit", is 1-way ventilation ducted unit which brings fresh outdoor air into indoor spaces and is available in a range of capacities. It can pre-cool or heat the outside air using the VRF refrigerant loop and can be controlled from the VRF system using H-LINK wiring.

This simplifies operation of the overall HVAC system by unifying the outdoor air to the set temperature of the indoor air without need to operate and balance separate ventilation and AC systems, which in turn means less maintenance issues for businesses.

模擬;東京，運營，上午8點至18點，辦公室，135m2，室內溫度25C，根據天氣數據2月16日，2020年2月16日，冷卻/加熱操作

– 2-way ventilation that cuts energy consumption by up to 36%

Hitachi’s Energy Recovery Ventilation, called "Total Heat Exchanger" is a 2-way ventilation solution which uses the energy contained in the air being exhausted from the building to pre-condition the incoming outdoor ventilation air, so that the AC system does not have to work as hard. Compared to using a simple ventilation exhaust fan when running AC, it reduces annual electricity consumption by up to 36%1 because of the reduced loading on the AC as the air leaving the building is replaced by air already conditioned to the set temperature indoors.

– 2-way ventilation designed for VRF or commercial split systems

Because the Total Heat Exchanger does not connect to any refrigerant system to pre-condition the air, it can be used in both VRF and commercial split systems through a ducted connection, and can continue to operate effectively when the AC system is switched off. If integrating with an Hitachi VRF AC system, the control of the ventilation system can be fully integrated with the AC using H-LINK wiring and a CentralStation controller.

A range of optional filters can be fitted to the outdoor air suction stream, and an optional CO2 sensor can be installed to enable more precise control of the ventilation based on the levels of CO2 detected in the indoor (exhaust) air stream.

– Choose your Hitachi Cooling & Heating system

– Hitachi Air Conditioners and Ventilation technology for Residential and Commercial spaces

With over 80 years of experience, we are confident that our range of air conditioning and ventilation solutions provides households and businesses with the leading climate control technology to create and maintain the perfect indoor environment. Meeting the evolving requirements of our clients means that we are constantly innovating our systems, resulting in a collection of elegant and efficient options that are designed to adapt to you and the spaces that they inhabit. We cater for all types of homes and commercial buildings and offer an extensive range of solutions so that you can find the system right for the job.

To see our ranges of residential and commercial solutions, click here, and if you are interested in receiving more information from a professional installer, find your nearest one using our Partner Locator.