Hitachi airHome 400 7.0kW High Capacity Split System Air Conditioner
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The Hitachi airHome 400 7.0kW split system is an expansive, high-capacity inverter heat pump engineered to cool and heat large residential areas, open-concept living spaces, and commercial offices. Rated at 24,000 BTU cooling and 27,300 BTU heating capacity, this heavy-duty split unit rapidly adjusts the ambient room climate even during extreme seasonal temperature peaks. Featuring onboard Wi-Fi and direct compatibility with airCloud Go, users can operate settings remotely or configure smart automated geofencing routines. The built-in FrostWash system continuously preserves internal hygiene and airflow performance by cleansing the indoor and outdoor coils automatically. Carrying an A++ energy efficiency rating, the system guarantees cost-effective running costs despite its formidable cooling duty. Safe installation must be completed by a qualified UK F-Gas installer.
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Smart-home ready
Connects natively with the systems below — control by app or voice.
- Free UK mainland delivery on in-stock units
- Manufacturer warranty included
- 14-day returns
Specifications
Description
The Hitachi airHome 400 7.0kW split system is an expansive, high-capacity inverter heat pump engineered to cool and heat large residential areas, open-concept living spaces, and commercial offices. Rated at 24,000 BTU cooling and 27,300 BTU heating capacity, this heavy-duty split unit rapidly adjusts the ambient room climate even during extreme seasonal temperature peaks. Featuring onboard Wi-Fi and direct compatibility with airCloud Go, users can operate settings remotely or configure smart automated geofencing routines. The built-in FrostWash system continuously preserves internal hygiene and airflow performance by cleansing the indoor and outdoor coils automatically. Carrying an A++ energy efficiency rating, the system guarantees cost-effective running costs despite its formidable cooling duty. Safe installation must be completed by a qualified UK F-Gas installer.
Winter heating cost: this AC vs electric heaters
This unit reverses to heat your room in winter. Based on its 8 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.
Electric heater / season
£1620
This AC / season
£540
You save / season
£1080
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 2000 kWh | £540 | Up to 300% | |
| Plug-in electric heater | 6001 kWh | £1620 | 100% | |
| Electric storage heater | 6001 kWh | £1620 | 100% |
Heat output estimated from this unit's 27,300 BTU/hr rating. A heat pump moves heat (COP ≈ 3), so it uses about a third of the electricity of a direct-electric heater for the same warmth. Actual savings vary with room size, insulation, tariff and usage. See the full comparison →