• Slimline white air conditioner on a white background
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Hitachi airHome 400 R32 Wall Mounted Indoor Unit

Hitachi airHome 400 R32 Wall Mounted Indoor Unit

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Product Overview: At a Glance

The Hitachi airHome 400 range of R32 wall mounted indoor units deliver efficient heating and cooling in a compact, stylish design. Ideal for residential and light commercial spaces, it provides smart, WiFi-enabled comfort for modern homes.

Key Features & Benefits

  • Energy-efficient R32 refrigerant - reduces running costs and environmental impact.
  • Compact wall-mounted design - perfect for small to medium rooms without compromising space.
  • WiFi-ready smart control - manage your indoor climate remotely via app or voice integration.
  • Quiet operation - maintains discreet comfort with minimal noise.
  • Includes infra-red remote controller - simple manual control when needed.
  • Stylish finish - blends seamlessly with contemporary interiors.

Typical Applications & Use Cases

Perfect for bedrooms, living areas, and home offices, the airHome 400 is designed for spaces where both efficiency and modern styling are important. Its WiFi connectivity makes it especially suited to smart home environments.

Technical Overview

Supports reliable cooling and heating capacities suitable for small to medium-sized rooms. Featuring advanced R32 refrigerant technology and energy-efficient operation, it balances high performance with lower energy consumption. Ranging from capacities of 2.0kW to 7.0kW. Full specifications are available for all model variants.

📄 View Specification Sheet

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

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

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Enquire About This Product View full details
Variant Variant total Quantity Price Variant total
Slimline white air conditioner on a white background
RAK-DJ18PHAERAK-DJ18PHAE
RAK-DJ18PHAERAK-DJ18PHAE
£0.00
£0.00/ea
 £0.00
£0.00
£0.00/ea
 £0.00
Slimline white air conditioner on a white background
RAK-DJ25PHAERAK-DJ25PHAE
RAK-DJ25PHAERAK-DJ25PHAE
£0.00
£0.00/ea
 £0.00
£0.00
£0.00/ea
 £0.00
Slimline white air conditioner on a white background
RAK-DJ35PHAERAK-DJ35PHAE
RAK-DJ35PHAERAK-DJ35PHAE
£0.00
£0.00/ea
 £0.00
£0.00
£0.00/ea
 £0.00
Slimline white air conditioner on a white background
RAK-DJ50PHAERAK-DJ50PHAE
RAK-DJ50PHAERAK-DJ50PHAE
£0.00
£0.00/ea
 £0.00
£0.00
£0.00/ea
 £0.00
Hitachi airHome 400 R32 Wall Mounted Indoor Unit
RAK-DJ60PHAERAK-DJ60PHAE
RAK-DJ60PHAERAK-DJ60PHAE
£0.00
£0.00/ea
 £0.00
£0.00
£0.00/ea
 £0.00
Hitachi airHome 400 R32 Wall Mounted Indoor Unit
RAK-DJ70PHAERAK-DJ70PHAE
RAK-DJ70PHAERAK-DJ70PHAE
£0.00
£0.00/ea
 £0.00
£0.00
£0.00/ea
 £0.00
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Hitachi airHome 400 R32 Wall Mounted 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’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.
What size HVAC unit do I need?
Sizing depends on room dimensions, insulation, occupancy, and usage. Oversized or undersized systems waste energy and reduce comfort - a qualified installer should calculate the correct capacity. Contact us at The MEP Shop today and we can help you size up your project correctly.
Are HVAC systems noisy?
Modern indoor units are designed for quiet operation, with sound levels often comparable to a whisper, making them suitable for bedrooms and offices.

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

Need any help with our range of Hitachi airHome 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.

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