When repairing or replacing an outdoor unit capacitor in a non-inverter air conditioner, it’s very important to select the correct capacitor size (μF) according to the AC tonnage or BTU rating.
The right capacitor ensures that the compressor and fan motor run smoothly, providing proper cooling and maintaining energy efficiency. Using the wrong capacitor can cause overheating, poor cooling, or compressor failure.
⚙️ What Is an AC Outdoor Capacitor?
The outdoor capacitor stores and releases electric energy to help start and run the compressor and outdoor fan motor. In non-inverter ACs, it plays a major role in stabilizing voltage and improving power factor.
Over time, capacitors can become weak or fail due to heat, age, or power surges, and must be replaced with the correct value.
Non Inverter AC Outdoor Capacitor Size by AC Size
Reference capacitor values (μF) for common non-inverter AC sizes.
| AC Size (Ton) | BTU Rating | Recommended Capacitor (μF) |
|---|---|---|
| 1 Ton | 12,000 BTU | 30 μF or 35 μF |
| 1.5 Ton | 18,000 BTU | 40 μF or 45 μF |
| 2 Ton | 24,000 BTU | 55 μF or 60 μF |
| 2.5 Ton | 30,000 BTU | 65 μF |
Note: Always verify the capacitor μF and voltage on the unit's existing capacitor or manufacturer spec before replacing.
🔍 Tips for Replacing an Outdoor Capacitor
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Always check the old capacitor label before replacement.
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Match both μF (microfarad) and voltage rating (usually 370V or 440V).
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Discharge the capacitor safely before touching it.
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Use a multimeter to confirm capacitor health.
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If unsure, always use one step higher μF (for example, 35μF instead of 30μF).
⚡ Conclusion
Choosing the correct outdoor capacitor size is essential for your non-inverter air conditioner’s performance and compressor life. A small difference can affect cooling efficiency, so always refer to the proper chart or the manufacturer’s specifications before replacement.
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#AirConditionerRepair
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