Lennox MCA Mini-Split Air Conditioner 18k BTU
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The Lennox MCA Mini-Split system is the ultimate solution for larger living spaces or open-plan areas requiring high-capacity cooling and heating. With an 18,000 BTU rating, this unit delivers rapid temperature adjustment, ensuring your room reaches your desired comfort level quickly and efficiently. The MCA series is celebrated for its whisper-quiet indoor operation, allowing you to enjoy a cool, peaceful environment without the distraction of loud fan noise. Its advanced filtration system also helps improve indoor air quality by capturing dust and allergens. The system's energy-efficient design helps you manage your electricity usage effectively, making it a smart investment for the long term. The modern, minimalist aesthetic of the indoor unit ensures it complements any contemporary home decor. Please note that this is a professional-grade split system and must be installed by a certified HVAC technician to ensure safety, compliance with UK regulations, and optimal system longevity. Enjoy the premium comfort that only Lennox engineering can provide.
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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
Full Specifications
Description
The Lennox MCA Mini-Split system is the ultimate solution for larger living spaces or open-plan areas requiring high-capacity cooling and heating. With an 18,000 BTU rating, this unit delivers rapid temperature adjustment, ensuring your room reaches your desired comfort level quickly and efficiently. The MCA series is celebrated for its whisper-quiet indoor operation, allowing you to enjoy a cool, peaceful environment without the distraction of loud fan noise. Its advanced filtration system also helps improve indoor air quality by capturing dust and allergens. The system's energy-efficient design helps you manage your electricity usage effectively, making it a smart investment for the long term. The modern, minimalist aesthetic of the indoor unit ensures it complements any contemporary home decor. Please note that this is a professional-grade split system and must be installed by a certified HVAC technician to ensure safety, compliance with UK regulations, and optimal system longevity. Enjoy the premium comfort that only Lennox engineering can provide.
Compare similar units
Side-by-side specs for other split system ac in a similar BTU range.
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 →
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