A 12,000 BTU mini split typically uses between 900 and 1,200 watts during operation.
A 12,000 BTU mini split air conditioner typically consumes between 900 and 1,200 watts of power during operation. This power usage varies based on the unit's efficiency rating (SEER), with higher SEER models consuming less power. For comparison, this is roughly equivalent to running 9-12 standard 100-watt light bulbs simultaneously.
Power Consumption by SEER Rating
- 14 SEER: ~1,000 watts
- 16 SEER: ~937 watts
- 18 SEER: ~833 watts
- 20+ SEER: ~750 watts
Operating vs. Starting Watts
| Power Type | Typical Range | Notes |
|---|---|---|
| Running Watts | 900-1,200W | Normal operation |
| Starting Watts | 2,000-3,000W | Initial power surge |
| Heating Mode | 800-1,100W | Heat pump operation |
Factors Affecting Power Usage
- Room temperature differential
- Unit age and maintenance
- Insulation quality
- Thermostat settings
- Operating mode (cooling vs. fan only)
Annual Energy Consumption
A 12,000 BTU mini split running 8 hours daily at 1,000 watts consumes approximately 292 kWh per month, costing $35-45 depending on local electricity rates. Annual consumption ranges from 2,500-3,500 kWh.