Knowing the most efficient way to run a mini split will help you get the most out of your investment. Mini split heat pumps are known for their efficiency. But, it’s important that they’re properly controlled and maintained to maximize savings. Weather, size and placement, maintenance, home efficiency, and how you control your mini split can all affect its efficiency.
Properly Manage Mini Split Run Time
Central HVAC systems cycle on and off every 15 minutes or so, but this isn’t the case with a mini split. You may be tempted to turn your mini split on and off or to dramatically adjust temperature settings to conserve energy. But that isn’t always the way to go. While that would be a smart way to save when using other HVAC systems, mini splits operate best when used consistently. It’s kind of like a car getting better miles per gallon at a constant speed. Instead of making major changes, smaller adjustments are a better option to save.
Optimize Mini Split Settings
Optimizing your mini split’s settings will also help increase efficiency. To start, pick a comfort level. Adjust your temperature settings until you reach your desired degree of comfort. Keep in mind that a mini split measures temperature closer to the ceiling where it’s installed, so you may have to set the temperature a little higher than you’re used to. Next, choose the ‘AUTO’ fan setting. Mini split auto mode will allow your system to change fan speed based on the weather and your temperature setting. So, be sure to use auto mode, it’s the best setting for mini split efficiency!
Maintain Mini Splits Regularly
- Clean and dry or replace the air filter about every 4–6 weeks.
- Clean the condenser coil about every 4–6 weeks. Before doing this, turn off the power and let the system sit for at least an hour. Your condenser coil is located in the outdoor unit, and you’ll need to remove the cabinet first. Use a soft, dry cloth to wipe down the coil.
- Keep the area surrounding the unit clean. Make sure there’s nothing close to the inside or outside unit that could potentially block airflow. This includes vegetation, toys, snow, fallen leaves, etc.
- Ensure proper drainage. Your mini split’s evaporator collects condensation through suction tubing. Make sure the outdoor unit is draining properly.
Get Smarter Control
There are many other benefits to getting a smart mini split thermostat that will help you find the most efficient way to run your mini split, for example:
- Mini split app control and smart features allow you to monitor and control your mini split’s settings from anywhere.
- You can set schedules, so your mini split automatically adjusts if you have a planned vacation or weekend getaway.
- Features like Energy Insights track usage information like humidity, ambient temperature, and runtime, so you can find ways to save.
- Mini split Google Home, Alexa, or HomeKit smart home integration makes life even easier.
- A feature like thermostatic control measures temperature close to where you are, so you’re more comfortable.
Ensure Proper Mini Split Size & Placement
As with any HVAC equipment, proper sizing is imperative. Heating and/or cooling equipment that’s too small will cause the system to overwork. This negatively affects the life of the system and means it may not be able to produce enough warm or cool air. On the flip side — is it OK to slightly oversize a mini split? Ideally, no. Equipment that’s oversized won’t run efficiently and will likely cause short cycling, poor humidity control, and waste energy (and money).

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