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Hitachi airHome 400 Wall Mounted Air Conditioning System R32 Wi-Fi
£662.99
Taxes included.
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30-day return policy
Pickup available at F3 Castings Way, Leafbridge, Castings Way, Lincoln
Usually ready in 24 hours
Availability: please read before ordering
Hitachi systems are supplied to order through our UK distributor, usually within 1–2 weeks. After you order we confirm stock and the delivery date before your order is processed. If the lead time does not work for you, you can cancel for a full refund.
Hitachi airHome 400 Wall Mounted Air Conditioning System (R32, Wi-Fi)
A complete Hitachi airHome 400 single split system: wall mounted indoor unit plus matched R32 outdoor unit for heating and cooling one room. A++ efficiency, Frost Wash self-cleaning and built-in Wi-Fi at a sharper price than the airHome 600.
Key points
- Indoor and outdoor unit supplied together as a matched pair
- A++ efficiency (SEER 7.5 / SCOP 4.6 on 2–3.5kW)
- Frost Wash on both units: the coils freeze and thaw to wash away dust and dirt, a Hitachi-exclusive self-clean
- Built-in Wi-Fi with the airCloud Go app
- R32, pre-charged for up to 20m (30m on 6–7kW)
What's included
- 1x Hitachi airHome 400 wall mounted indoor unit (RAK-…RHAE)
- 1x matched Hitachi outdoor unit (RAC-…WHAE)
- Infra-red remote control and wall mounting plate
- Pipework, cable, wall brackets and condensate pump are not included
Models
| Size | Indoor | Outdoor | Cooling | Heating | SEER / SCOP | Max pipe / height (m) | Fuse | Price inc VAT |
|---|---|---|---|---|---|---|---|---|
| 2kW | RAK-DJ18RHAE | RAC-DJ18WHAE | 2.0kW | 2.5kW | 7.5 / 4.6 | 20 / 10 | 16A | £662.99 |
| 2.5kW | RAK-DJ25RHAE | RAC-DJ25WHAE | 2.5kW | 3.4kW | 7.5 / 4.6 | 20 / 10 | 16A | £667.99 |
| 3.5kW | RAK-DJ35RHAE | RAC-DJ35WHAE | 3.5kW | 4.2kW | 7.5 / 4.6 | 20 / 10 | 16A | £775.99 |
| 5kW | RAK-DJ50RHAE | RAC-DJ50WHAE | 5.0kW | 6.0kW | 7.0 / 4.5 | 20 / 10 | 25A | £1,021.99 |
| 6kW | RAK-DJ60RHAE | RAC-DJ60WHAE | 6.1kW | 6.8kW | 6.8 / 4.1 | 30 / 20 | 20A | £1,260.99 |
| 7kW | RAK-DJ70RHAE | RAC-DJ70WHAE | 7.1kW | 8.1kW | 6.2 / 4.0 | 30 / 20 | 20A | £1,538.99 |
Source: Hitachi airHome price list and data supplied by Hitachi Cooling & Heating UK (2026). Pipe sizes 1/4" liquid; gas 3/8" (2–5kW), 1/2" (6kW) or 5/8" (7kW) per Hitachi data.
Need more than one room?
Use the airHome Multi Pro outdoor unit with airHome 400 multi split wall units.
Controls
Supplied with an infra-red remote and built-in Wi-Fi (airCloud Go). A Hitachi SPX-URFG1 colour wired controller is available to order on request.
F Gas installation requirement
This equipment contains or connects to R32 refrigerant and must be installed, pressure tested and commissioned by an F Gas certified engineer. You will be asked for your company and F Gas certificate details at checkout, and we verify them before dispatch or collection. Orders we cannot verify are cancelled and refunded in full. Electrical work must comply with BS 7671.
Delivery & collection
Heavy item: £100 delivery per order to a UK mainland address, or free collection from our Lincoln unit at Leafbridge Business Park.
Shop the Hitachi airHome range
Single room or whole house: the airHome range covers both.
- Hitachi airHome Multi Pro outdoor unit 3.6–10kW (2 to 5 rooms)
- Hitachi airHome 600 multi split wall unit 1.5–7kW
- Hitachi airHome 400 multi split wall unit 1.5–7kW
- Hitachi airHome 600 wall mounted system 2–7kW
Also see condensate pumps, trunking, all multi split systems and the Hitachi air conditioning page.
PDF Downloads
Manufacturer documents for this product.
