Carrier Performance 18,000 BTU Wall Mounted Inverter Split System
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Retail prices include VAT.
The Carrier Performance 18,000 BTU Wall Mounted Inverter Split System is designed to supply high-capacity cooling and reverse-cycle heating across expansive domestic living zones, kitchen extensions, and meeting rooms. Delivering impressive airflow throw distances, this system quickly evens out room temperatures while consuming modest energy via its A++ efficiency rating. Built-in smart Wi-Fi allows complete remote access through iOS and Android applications, facilitating customized timer schedules and remote pre-conditioning. Advanced multi-stage filters actively trap dust particles and airborne impurities, maintaining clean, healthy room air all year round. The outdoor unit features heavy-duty anti-corrosive gold-fin protection, ensuring long-term resilience against wet British weather conditions. With comprehensive internal diagnostic software and whisper-quiet indoor fan modes, this system combines Carrier engineering pedigree with reliable, quiet day-to-day comfort.
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.
- Free UK mainland delivery on in-stock units
- Manufacturer warranty included
- 14-day returns
Technical documents & videos
More from Carrier →Official Carrier 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 Carrier — ask us and we will send the cut sheet with mounting and clearance figures.
Description
The Carrier Performance 18,000 BTU Wall Mounted Inverter Split System is designed to supply high-capacity cooling and reverse-cycle heating across expansive domestic living zones, kitchen extensions, and meeting rooms. Delivering impressive airflow throw distances, this system quickly evens out room temperatures while consuming modest energy via its A++ efficiency rating. Built-in smart Wi-Fi allows complete remote access through iOS and Android applications, facilitating customized timer schedules and remote pre-conditioning. Advanced multi-stage filters actively trap dust particles and airborne impurities, maintaining clean, healthy room air all year round. The outdoor unit features heavy-duty anti-corrosive gold-fin protection, ensuring long-term resilience against wet British weather conditions. With comprehensive internal diagnostic software and whisper-quiet indoor fan modes, this system combines Carrier engineering pedigree with reliable, quiet day-to-day comfort.
Compare similar units
Side-by-side specs for other split system ac in a similar BTU range.
Common questions about the Carrier Performance 18,000 BTU Wall Mounted Inverter Split System
How many BTU is the Carrier Performance 18,000 BTU Wall Mounted Inverter Split System?
The Carrier Performance 18,000 BTU Wall Mounted Inverter Split System has a cooling capacity of 18,000 BTU, suitable for Up to 50m².
What room size is the Carrier Performance 18,000 BTU Wall Mounted Inverter Split System suitable for?
The Carrier Performance 18,000 BTU Wall Mounted Inverter Split System is recommended for rooms Up to 50m².
Can I install the Carrier Performance 18,000 BTU Wall Mounted Inverter 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 Carrier Performance 18,000 BTU Wall Mounted Inverter Split System smart-home compatible?
Yes — the Carrier Performance 18,000 BTU Wall Mounted Inverter Split System supports Carrier Home App, Amazon Alexa, Google Assistant for app and voice control.
How long does delivery of the Carrier Performance 18,000 BTU Wall Mounted Inverter Split System take?
This unit is 3-5 working 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 5 kW heat output used 5 hrs/day over a 150-day UK heating season at £0.27/kWh.
Electric heater / season
£1098
This AC / season
£366
You save / season
£732
~67% less electricity
| Heating method | Electricity / season | Cost / season | Efficiency | Summer cooling |
|---|---|---|---|---|
| This heat-pump AC | 1356 kWh | £366 | Up to 300% | |
| Plug-in electric heater | 4067 kWh | £1098 | 100% | |
| Electric storage heater | 4067 kWh | £1098 | 100% |
Heat output estimated from this unit's 18,500 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 £366/season to heat a room vs £1098 for an electric heater - that's £732 saved. https://stockool.store/products/carrier-performance-18000-btu-wall-mounted-inverter-split-system
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