Sharp AY-X18YWI 18000 BTU High-Capacity Inverter Split Air Conditioner
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The Sharp AY-X18YWI 18000 BTU inverter split air conditioner offers exceptional cooling and high-output heating for open-plan living zones, home extensions, and retail environments across the UK. Engineered with an advanced dual-cylinder DC inverter compressor, this robust wall-mounted split unit swiftly balances indoor temperatures while optimising power consumption. It features integrated Wi-Fi networking for simple schedule programming and real-time monitoring via mobile devices and smart voice assistants. The indoor fascia features wide dual-louvre air deflectors that distribute conditioned air across expansive spaces evenly, eliminating cold pockets. Additional operational modes include a dehumidification setting for damper UK seasons, an energy-saving Eco setting, and an automatic restart protocol that restores settings following unexpected mains power cuts. Its durable outdoor condenser is treated with anti-corrosion fins, providing prolonged operational life and dependable high performance in all weather conditions.
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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
Technical documents & videos
More from Sharp →Official Sharp manual
The manufacturer's PDF for this model is being sourced and will be downloadable here.
Full Specifications
Physical dimensions
Exact dimensions for this model are being confirmed with Sharp — ask us and we will send the cut sheet with mounting and clearance figures.
Description
The Sharp AY-X18YWI 18000 BTU inverter split air conditioner offers exceptional cooling and high-output heating for open-plan living zones, home extensions, and retail environments across the UK. Engineered with an advanced dual-cylinder DC inverter compressor, this robust wall-mounted split unit swiftly balances indoor temperatures while optimising power consumption. It features integrated Wi-Fi networking for simple schedule programming and real-time monitoring via mobile devices and smart voice assistants. The indoor fascia features wide dual-louvre air deflectors that distribute conditioned air across expansive spaces evenly, eliminating cold pockets. Additional operational modes include a dehumidification setting for damper UK seasons, an energy-saving Eco setting, and an automatic restart protocol that restores settings following unexpected mains power cuts. Its durable outdoor condenser is treated with anti-corrosion fins, providing prolonged operational life and dependable high performance in all weather conditions.
Compare similar units
Side-by-side specs for other split system ac in a similar BTU range.
Common questions about the Sharp AY-X18YWI 18000 BTU High-Capacity Inverter Split Air Conditioner
How many BTU is the Sharp AY-X18YWI 18000 BTU High-Capacity Inverter Split Air Conditioner?
The Sharp AY-X18YWI 18000 BTU High-Capacity Inverter Split Air Conditioner has a cooling capacity of 18,000 BTU, suitable for 35-50 m².
What room size is the Sharp AY-X18YWI 18000 BTU High-Capacity Inverter Split Air Conditioner suitable for?
The Sharp AY-X18YWI 18000 BTU High-Capacity Inverter Split Air Conditioner is recommended for rooms 35-50 m².
Can I install the Sharp AY-X18YWI 18000 BTU High-Capacity Inverter Split Air Conditioner 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 Sharp AY-X18YWI 18000 BTU High-Capacity Inverter Split Air Conditioner smart-home compatible?
Yes — the Sharp AY-X18YWI 18000 BTU High-Capacity Inverter Split Air Conditioner supports Amazon Alexa, Google Assistant for app and voice control.
How long does delivery of the Sharp AY-X18YWI 18000 BTU High-Capacity Inverter Split Air Conditioner take?
This unit is 3-5 business days. Delivery is then 1–2 working days to most UK mainland addresses, and 3–6 working days into the EU.
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Mitsubishi ElectricAnnual energy savings estimate
How much this A++-rated unit could save versus a standard C-rated model, based on your usage.
This unit
146 kWh/yr
EER 13
Standard model
237 kWh/yr
EER 8
Est. saving
£24.65
91 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 method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 1392 kWh | £376 | Up to 300% | |
| Plug-in electric heater | 4176 kWh | £1128 | 100% | |
| Electric storage heater | 4176 kWh | £1128 | 100% |
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/sharp-ay-x18ywi-18000-btu-inverter-split
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