Updated: June 2024

Mini-split AC systems are becoming increasingly popular among homeowners and business owners alike. However, one question that often comes up is whether or not it’s safe to leave a mini-split system running all the time. At A/C Doctors, we will help you explore the answer to that question and discuss some best practices for using your mini-split system.

What Is a Mini-Split AC System?

Mini-splits, also known as ductless heating and cooling systems, are a type of HVAC system that lets you have individualized temperature control in different rooms or zones of a building. A mini-split system has two main components: an outdoor unit, known as the condenser, and one or more indoor units, known as head units, evaporators, or air handlers. These two units are connected by insulated copper refrigerant lines and electrical cables that transfer heat and power between the units.

The refrigerant, a liquid, absorbs heat from the indoor air as it passes through the evaporator coil. It then travels through the refrigerant lines to the outdoor condenser unit. The refrigerant passes through a compressor, which increases the pressure and temperature, thereby concentrating the heat.

Once the refrigerant reaches the condenser unit, it releases the heat previously absorbed into the surrounding air through the condenser coils. The compressor is the most energy-intensive component of the mini-split system, as it requires more electricity to run than the much smaller fans that circulate air across the evaporator and condenser coils.

Modern mini-split systems often use inverter-driven compressors, which are highly energy efficient and allow for more precise temperature control. This feature is particularly beneficial when the system is left to run continuously, as it can significantly improve the unit’s overall efficiency. A/C Doctors can provide more information about how these systems work and help determine if a mini-split system is the right choice for your heating and cooling needs.

Benefits of a Mini-Split A/C System

One of the main benefits of a mini-split system is its flexibility. Unlike traditional HVAC systems, a mini-split system can be installed in various spaces, including homes, offices, and commercial buildings. It is an excellent option for those looking to upgrade their heating and cooling systems but cannot do so due to space constraints.

Another benefit of a mini-split system is its energy efficiency. The system is designed to use less energy than traditional HVAC systems, which can help to lower energy costs and reduce the environmental impact of your heating and cooling system. Additionally, the system is designed to be very quiet and unobtrusive.

Can I Leave My Mini-Split Running All the Time?

The short answer is yes; you can always leave your mini-split system running. Mini-split systems are designed to run non-stop throughout the day, making them the perfect “set-and-forget” option.

The key to mini-splits’ efficiency is their inverter technology, which allows them to adapt automatically to the conditions within the home. This technology ensures that the system runs at the exact percentage of capacity needed to meet the cooling load requirement.

Adjusting the temperature or turning off your mini-split when you leave home can decrease efficiency. The system is designed to run all the time, so interruptions in its operation can negatively impact its performance. A/C Doctors can provide expert advice on using and maintaining your mini-split system to ensure maximum efficiency.

Best Practices for Using Your Mini-Split System

Like any HVAC system, mini-splits require proper maintenance and upkeep to ensure they operate at their best. Here are some tips for maximizing the efficiency of your mini-split system:

1. Use a Programmable Thermostat

One of the best ways to ensure the efficiency of your mini-split is to use a programmable thermostat. A programmable thermostat allows you to set different temperatures for different times of the day, which can help you save money on your energy bills. For example, you can select the temperature to be more relaxed during the day and warmer at night when you’re home. A/C Doctors offers a range of programmable thermostats that can be easily integrated with your mini-split.

2. Keep up With Maintenance

Another important aspect of using your mini-split system is to keep up with maintenance. This includes changing the air filter, cleaning the coils, and checking the refrigerant levels. The air filters in your mini-split are responsible for removing dirt, dust, and other contaminants. If they become clogged, they can restrict airflow and cause the system to work harder than it needs to. Make sure to contact A/C Doctors to inspect your system regularly. Keeping your mini-split system in good working order will help ensure that it’s running as efficiently as possible and that you’re getting the most out of your system. You can schedule an annual tune-up service with a professional HVAC provider like A/C Doctors. During this service, our technicians will inspect and clean the unit, check for refrigerant leaks, and make any necessary repairs.

mini split best practices

3. Optimize Mini-Split Settings

You can improve energy efficiency and achieve your desired comfort level by fine-tuning your mini-split settings. One critical step is to select a comfortable temperature setting. Keep in mind that mini-splits measure temperature at the point of installation, typically closer to the ceiling, so you may need to adjust the temperature slightly higher than what you’re accustomed to. Additionally, utilizing the “AUTO” fan setting on your mini-split is recommended. This allows the system to automatically adjust fan speed based on the weather and your temperature settings, ensuring optimal efficiency. For further assistance, consider reaching out to our professionals from A/C Doctors.

4. Ensure Appropriate Mini-Split Size and Positioning

To ensure the optimal performance of your mini-split system, choosing the right size and placement for your space is crucial. An HVAC unit that is too small for the area intended to cool or heat will have to work harder than necessary, leading to decreased lifespan and inadequate temperature control. To determine the appropriate size for your mini-split, it’s essential to have a professional HVAC technician from A/C Doctors conduct a thorough assessment of the room or area to be cooled or heated. This process considers the space’s square footage and specific heating and cooling needs, ensuring that you select a unit with the appropriate capacity. Investing in the right size and placement of your mini-split system will help ensure its longevity and efficiency.

If you have any concerns or need assistance with your mini-split, contact us at A/C Doctors in Gilbert, AZ for professional service and repair services.

How We Can Help

Mini-split systems are designed to be low maintenance and energy efficient. By setting the desired temperature and allowing the system to run continuously, you can expect to experience optimal comfort, reduced energy consumption, minimal wear on its components, and quiet operation.

In addition to mini-split systems, A/C Doctors also offers traditional HVAC services, such as furnace and air conditioning repair and replacement, as well as indoor air quality solutions in Gilbert, AZ. We are committed to providing our customers with the best products and services at an affordable price.

Contact us at A/C Doctors today for more information on mini-splits!

company icon