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Hisense X4 Series 5.4kW Wall Split System
Hisense

Hisense X4 Series 5.4kW Wall Split System

In StockEnergy A+
£1,165.000

Trade pricing available — apply or sign in for your trade rate

Dispatched in 2-3 working days
UK-Wide Delivery
Free UK mainland delivery on in-stock units
🇪🇺 EU Delivery available
Dispatched in 3–7 working days, then 5–10 working days EU transit
Orders under €150 ship VAT-paid at checkout (IOSS, no charges on delivery). Orders of €150 or more ship DDU — import VAT and customs duty are collected by the courier on delivery.

Retail prices include VAT.

For larger living spaces, the Hisense X4 Series 5.4kW split system offers robust performance and exceptional versatility. This high-capacity unit is designed to handle larger rooms or open-plan areas up to 50m², providing rapid cooling and efficient heating. The X4 series is packed with features, including a 4-in-1 Catechin filter for superior air purification and Self-Clean Pro technology, which keeps the internal components clean and free from mould. With its 4D Auto Swing functionality, the unit ensures even air distribution throughout the entire room, eliminating hot or cold spots. The system is fully compatible with the ConnectLife app, allowing for seamless smart home integration and remote control. Whether you are looking to maintain a comfortable temperature in a large lounge or a busy family area, the X4 Series provides the power and reliability you need. Its energy-efficient design helps keep running costs low, making it a smart choice for larger homes requiring consistent, year-round climate control.

1

Need it installed?

We'll match you with a local HVAC engineer.

Smart-home ready

Connects natively with the systems below — control by app or voice.

Amazon AlexaGoogle Home
  • Free UK mainland delivery on in-stock units
  • Manufacturer warranty included
  • 14-day returns

Technical documents & videos

More from Hisense →

Official Hisense manual

The manufacturer's PDF for this model is being sourced and will be downloadable here.

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Full Specifications

Cooling Capacity18,000 BTU
Recommended Room SizeUp to 50m²
Energy RatingA+
Smart HomeAmazon Alexa, Google Home
Noise Level—
CategorySplit System AC
SKUHIS-X4-54-INV

Description

For larger living spaces, the Hisense X4 Series 5.4kW split system offers robust performance and exceptional versatility. This high-capacity unit is designed to handle larger rooms or open-plan areas up to 50m², providing rapid cooling and efficient heating. The X4 series is packed with features, including a 4-in-1 Catechin filter for superior air purification and Self-Clean Pro technology, which keeps the internal components clean and free from mould. With its 4D Auto Swing functionality, the unit ensures even air distribution throughout the entire room, eliminating hot or cold spots. The system is fully compatible with the ConnectLife app, allowing for seamless smart home integration and remote control. Whether you are looking to maintain a comfortable temperature in a large lounge or a busy family area, the X4 Series provides the power and reliability you need. Its energy-efficient design helps keep running costs low, making it a smart choice for larger homes requiring consistent, year-round climate control.

Compare similar units

Side-by-side specs for other split system ac in a similar BTU range.

Cooling Capacity
18,000 BTU
18,000 BTU
18,000 BTU
18,000 BTU
Room Size
Up to 50m²
Up to 50m²
Up to 45m²
Up to 45m²
Energy Rating
A+
A++
A+
A++
Heating Capable
Yes (heat pump)
Yes (heat pump)
Yes (heat pump)
Yes (heat pump)
Smart Home
Amazon Alexa, Google Home
Google Home, Amazon Alexa
Google Home, Amazon Alexa
Tuya/SmartLife
Stock
In Stock
In Stock
In Stock
In Stock
Price inc VAT
£1,165.00
£2,130.00
£1,035.00
£1,045.00

Common questions about the Hisense X4 Series 5.4kW Wall Split System

How many BTU is the Hisense X4 Series 5.4kW Wall Split System?

The Hisense X4 Series 5.4kW Wall Split System has a cooling capacity of 18,000 BTU, suitable for Up to 50m².

What room size is the Hisense X4 Series 5.4kW Wall Split System suitable for?

The Hisense X4 Series 5.4kW Wall Split System is recommended for rooms Up to 50m².

Can I install the Hisense X4 Series 5.4kW Wall Split System myself?

No — this unit requires professional installation by a qualified F-gas engineer. Use our Find an Installer service to get matched with a local HVAC professional.

Is the Hisense X4 Series 5.4kW Wall Split System smart-home compatible?

Yes — the Hisense X4 Series 5.4kW Wall Split System supports Amazon Alexa, Google Home for app and voice control.

Annual energy savings estimate

How much this A+-rated unit could save versus a standard C-rated model, based on your usage.

This unit

173 kWh/yr

EER 11

Standard model

237 kWh/yr

EER 8

Est. saving

£17.48

65 kWh/yr less

Estimate based on the unit's energy-rating efficiency factor and cooling capacity (18,000 BTU). Actual savings vary with room size, climate and usage patterns.

Winter heating cost: this AC vs electric heaters

This unit reverses to heat your room in winter. Based on its 6 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.

Electric heater / season

£1128

This AC / season

£376

You save / season

£752

~67% less electricity

Heating methodElectricity / seasonCost / seasonEfficiencySummer cooling
This heat-pump AC1392 kWh£376Up to 300%
Plug-in electric heater4176 kWh£1128100%
Electric storage heater4176 kWh£1128100%

Heat output estimated from this unit's 19,000 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 →

Share your savings

This heat-pump AC costs only £376/season to heat a room vs £1128 for an electric heater - that's £752 saved. https://stockool.store/products/hisense-x4-series-5-4kw-wall-split-system

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