230-Volt Mini Split

Understanding Mini Split Capacity and Amps

A mini split air conditioner's capacity and amperage go hand in hand. The higher the capacity, the more amps it will draw. But how many amps exactly? That depends on the unit's specifications.

Voltage and Amperage

Using the Gree Livo Gen4 9K BTU 19.5 SEER2 mini-split as an example, it operates on a 230V electrical system. Here are the key electrical specifications:

• Voltage: 208/230V, Single Phase, 60Hz
• Maximum Breaker Size: 15 Amps
• Minimum Breaker Size: 10 Amps
• Amperage Requirement: 15 Amps

This 9K unit requires a 15-amp circuit breaker, given its voltage and efficiency. This is typical for high-efficiency mini-split units and ensures the system runs smoothly without overloading your electrical circuit.

Efficiency

The Gree Livo Gen4 is designed with high efficiency in mind, boasting a SEER2 rating of 19.5. This high efficiency is due to several advanced features:

• G10 Inverter and Variable Compressor Technology: These technologies provide faster and more consistent temperature control while using less power than conventional systems.
• Multiple Fan Speeds and Sleep Mode: These options help optimize energy usage based on your needs, reducing overall power consumption.

Investing in this high-efficiency model can enjoy significant energy savings and lower electricity bills.

Additional Factors

Extra features integrated into the unit can also influence the amperage requirement. The Gree Livo Gen4 includes several smart features that contribute to its overall power draw:

• Electric Heating Elements and Basepan Heater: These components ensure efficient operation even in harsh conditions, slightly increasing power usage.
• Zone Control and WiFi Connectivity: Optional features like zone control boards and built-in WiFi (with a separate adapter) might increase the power requirement by 3 to 5 amps per feature.

However, the Gree Livo Gen4's basic configuration, as provided, operates efficiently within its specified 15-amp requirement.

How Many Amps Does an 18,000 BTU Mini Split Use?

An 18,000 BTU mini split, suitable for cooling a large room or open-concept area, requires a significant amount of power to run.

How Much Power Does It Draw?

• An 18,000 BTU mini split air conditioner pulls roughly 15 to 20 amps of power when the compressor is running. The exact amperage will depend on the efficiency and specifications of your particular unit. At 120 volts, which is standard for most homes, this works out to around 1,800 to 2,400 watts. For the unit to start up, it may briefly draw up to 50% more amps.

What Size Circuit Breaker Do I Need?

• To handle the power needs of an 18,000 BTU mini split, you'll want a dedicated 20 to 30-amp circuit breaker. A 30 amp breaker is ideal, as it gives you some buffer in case of voltage spikes, provides room for the initial start-up surge, and allows you to add additional units to the circuit in the future if needed. Whatever size breaker you choose, be sure your home's electrical service can handle the extra load. An electrician can determine if your service needs upgrading.

Will I Need a Special Outlet?

• Yes, an 18,000 BTU mini split unit requires a special high-voltage outlet to plug into. It will connect to a 240-volt outlet, often referred to as a NEMA 6-20R. This provides the higher voltage the unit needs to operate compared to a standard 120-volt wall outlet. The outlet should be installed by an HVAC technician or electrician when the mini-split system is put in.

Power Consumption

• In terms of power consumption, an Energy Star-certified 18,000 BTU mini split air conditioner will use an estimated 1,500 to 2,000 kilowatt-hours of electricity per year for cooling a 600 to 800-square-foot area. The actual amount will depend on factors like your local climate, insulation, and how often you run the unit. Mini split units are very energy efficient compared to central AC, so you can expect significant savings on your utility bills.