Carrier Infinity 18,000 BTU High Wall Inverter Split System
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Retail prices include VAT.
The Carrier Infinity 18,000 BTU High Wall Inverter Split System delivers heavy-duty climate conditioning tailored for large residential and light-commercial areas. Whether cooling a sprawling UK open-plan kitchen diner or providing powerful winter warmth to a garden office, this powerful split system achieves outstanding thermal performance with class-leading energy efficiency. It features intelligent sensor guidance and wide-angle louver swing patterns to spread air smoothly across extensive footprints without creating uncomfortable localized cold drafts. The integrated Wi-Fi interface lets you modify ambient temperatures, establish detailed run-time programs, and observe current energy expenditure straight from your smartphone. Built to withstand demanding British winters, the unit operates efficiently in sub-zero outdoor temperatures. Its quiet fan mechanisms and washable high-density filters make it an exceptional choice for busy living environments.
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
In stock now — closest alternatives
This unit is on pre-order. These ship now, matched on cooling capacity and price.
Viessmann Vitoclima 200-S 5.2kW High-Output Split System Heat Pump
Gree Charmo 5.0kW Inverter Wall Split
Fujitsu KM Series ASYG18KMCC / AOYG18KMCC 5.2kW Wall Mounted Split System
Mitsubishi Electric MSZ-AY50VGK 5.0kW Wall Mounted Split System
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 Infinity 18,000 BTU High Wall Inverter Split System delivers heavy-duty climate conditioning tailored for large residential and light-commercial areas. Whether cooling a sprawling UK open-plan kitchen diner or providing powerful winter warmth to a garden office, this powerful split system achieves outstanding thermal performance with class-leading energy efficiency. It features intelligent sensor guidance and wide-angle louver swing patterns to spread air smoothly across extensive footprints without creating uncomfortable localized cold drafts. The integrated Wi-Fi interface lets you modify ambient temperatures, establish detailed run-time programs, and observe current energy expenditure straight from your smartphone. Built to withstand demanding British winters, the unit operates efficiently in sub-zero outdoor temperatures. Its quiet fan mechanisms and washable high-density filters make it an exceptional choice for busy living environments.
Compare similar units
Side-by-side specs for other split system ac in a similar BTU range.
Common questions about the Carrier Infinity 18,000 BTU High Wall Inverter Split System
How many BTU is the Carrier Infinity 18,000 BTU High Wall Inverter Split System?
The Carrier Infinity 18,000 BTU High Wall Inverter Split System has a cooling capacity of 18,000 BTU, suitable for Up to 50m².
What room size is the Carrier Infinity 18,000 BTU High Wall Inverter Split System suitable for?
The Carrier Infinity 18,000 BTU High Wall Inverter Split System is recommended for rooms Up to 50m².
Can I install the Carrier Infinity 18,000 BTU High Wall 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 Infinity 18,000 BTU High Wall Inverter Split System smart-home compatible?
Yes — the Carrier Infinity 18,000 BTU High Wall Inverter Split System supports Carrier Home App, Amazon Alexa, Google Assistant for app and voice control.
How long does delivery of the Carrier Infinity 18,000 BTU High Wall 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 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/carrier-infinity-18000-btu-high-wall-inverter-split-system
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