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Hitachi airHome 400 Multi Wall Mounted R32 Indoor Unit

Hitachi airHome 400 Multi Wall Mounted R32 Indoor Unit

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Product Overview: At a Glance

Hitachi airHome 400 Multi R32 wall mounted indoor units provide efficient heating and cooling in a sleek, modern design. Ideal for residential and light commercial spaces, it delivers smart climate control with energy-saving features and WiFi connectivity for easy management.

Key Features & Benefits

  • R32 refrigerant - energy-efficient operation with reduced environmental impact.
  • Frost Wash technology - keeps the heat exchanger clean by freezing and melting, improving air quality.
  • airCloud Go WiFi control - compatible with Google Home and Amazon Alexa for remote management.
  • Anti-Virus and Mold Guard protection - maintains a healthier indoor environment.
  • Flexible installation - pre-charged for up to 20m piping length (30m for some alrger capacity units); lockable for heating or cooling only.
  • Advanced infrared controller - 7-day timer included, with optional hard-wired and BMS integration solutions.
  • Stylish, compact design - blends seamlessly with modern interiors while providing powerful climate control.

Typical Applications & Use Cases

Perfect for homes, apartments, and light commercial spaces, the airHome 400 Multi ensures consistent comfort year-round. Its discreet styling, WiFi-enabled control, and advanced air purification features make it especially suited to living areas and small offices.

Technical Overview

The airHome 400 Multi supports R32 refrigerant for efficient performance and environmental friendliness. With pre-charging for up to 20-30 metres of piping, lockable heating or cooling modes, and optional hard-wired or H-Link integration, it offers versatile installation and control options. Frost Wash and anti-virus filters maintain optimal air quality for all indoor environments.

Please contact us for delivery information & quotes. Thank you.

Items on this page may also be known under the following references:

  • airHome 400 RAK-DJ-(Q/R)HAE/RAC-DJ-WHAE
  • Wall Mounted Indoor Unit c/w Infra Red Remote Controller & WiFi - airHome 400

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Slimline white air conditioner on a white background
RAK-DJ15QHAERAK-DJ15QHAE
RAK-DJ15QHAERAK-DJ15QHAE
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RAK-DJ18RHAERAK-DJ18RHAE
RAK-DJ18RHAERAK-DJ18RHAE
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RAK-DJ25RHAERAK-DJ25RHAE
RAK-DJ25RHAERAK-DJ25RHAE
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RAK-DJ35RHAERAK-DJ35RHAE
RAK-DJ35RHAERAK-DJ35RHAE
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Slimline white air conditioner on a white background
RAK-DJ50RHAERAK-DJ50RHAE
RAK-DJ50RHAERAK-DJ50RHAE
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Hitachi airHome 400 Multi Wall Mounted R32 Indoor Unit FAQs

What is the Hitachi airHome range?
Hitachi airHome is a residential air conditioning line designed for comfort, efficiency, and smart control. With stylish indoor units and quiet operation, it’s ideal for UK homes.
Does Hitachi airHome use eco-friendly refrigerants?
Yes. Many airHome models use R32 refrigerant, which has a lower global warming potential than older gases, supporting sustainability.
Can I control Hitachi airHome remotely?
Yes, The airHome series supports Wi-Fi connectivity and app-based control, allowing users to adjust settings from anywhere.
What does "multi system" mean in HVAC?
A multi system allows multiple indoor units to connect to a single outdoor unit, providing tailored comfort for different rooms or zones.
What’s the difference between an indoor and outdoor unit?
Outdoor units house the compressor and release or absorb heat, while indoor units distribute conditioned air into the building. Together, they form a complete HVAC system.

We’re Here To Help With All Hitachi Heat Pump and RAC Solutions

Need any help with our range of Hitachi airHome Multi products? Looking for advice on Hitachi heat pump systems? Our team is here to support you with both air-to-water heat pumps and RAC (Room Air Conditioning) split systems. Whether you need efficient residential heating and cooling or a commercial renewable energy solution, we can provide expert recommendations. From product selection and energy efficiency advice to installation and after-sales service, we make sure you get the most from Hitachi heat pump technology. Contact us today for help with your Hitachi heat pump or RAC system.