The Sirair Sigma 18000BTU Inverter Air Conditioner delivers powerful cooling and heating for larger bedrooms, living rooms, and medium-sized areas up to ±36 m². With inverter technology, built-in WiFi, and ultra-quiet performance, it’s the perfect choice for energy-conscious households and offices seeking reliable year-round comfort.
Enjoy smart climate control with app scheduling, voice control, and advanced filtration that keeps your indoor air clean, fresh, and healthy.
📌 Key Benefits
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✅ Cooling & Heating – one system for year-round use
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✅ Inverter Technology – 30–40% electricity savings vs fixed-speed ACs
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✅ Ultra-Quiet Performance – ideal for bedrooms & living areas
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✅ Smart WiFi App Control – adjust settings from anywhere
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✅ Voice Control Compatible – works with Google Assistant & Alexa
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✅ 3-in-1 Filter + Health Filter – removes dust, odors & bacteria
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✅ Self-Clean Function – prevents mildew and extends unit life
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✅ Energy Saver Mode – optimizes electricity use during long operation
📌 Technical Specifications
| Feature | Details |
|---|---|
| Capacity | 18000BTU |
| Recommended Room Size | Up to ±36 m² (living rooms, large bedrooms, offices) |
| Functionality | Cooling & Heating (Reverse Cycle) |
| Technology | DC Inverter (Variable Speed Compressor) |
| Operating Modes | Auto, Cooling, Heating, Dry, Fan, Sleep, Energy Saver |
| Temperature Range | 16°C – 30°C |
| Noise Level | Ultra-Quiet: Indoor ≤ 28 dB |
| Filtration System | 3-in-1 Filter + Health Filter |
| Smart Control Options | Remote, Manual, WiFi App, Voice (Google/Alexa) |
| Connectivity | Global Cloud Control |
| Comfort Features | Comfort Airflow Control, Self-Clean, Sleep Mode |
| Design Finish | White Matte |
| Installation | Wall-Mounted Split Unit |
| Power Supply | 220V / 50Hz |
| Warranty | 5-Year Unit |
📌 Comfort & Protection Features
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DC Inverter Technology – quieter operation & longer compressor life
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Comfort Airflow Control – ensures even temperature distribution
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Mildew Proof Technology – prevents mold buildup inside the unit
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Auto Restart – resumes operation automatically after a power cut
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Energy Saver Mode – reduces electricity use for sustained operation
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Self-Clean Function – maintains hygiene and system efficiency
📌 Application Recommendation
✔ Larger bedrooms, lounges, or medium living areas (up to ±36 m²)
✔ Small offices or workspaces needing smart climate control
✔ Energy-conscious homes looking for long-term savings
✔ Properties requiring both cooling and heating in one system
👉 The Sigma 18000BTU Inverter Air Conditioner combines powerful performance, smart controls, and energy efficiency, making it one of the best mid-range air conditioning solutions for South Africa.
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