The Advantages of Mini Split AC Systems


The Advantages of Mini Split AC Systems

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It's probably safe to conclude that the summer heat can be unbearable without a reliable air conditioning system. One popular cooling solution that has been making waves in the modern world is the mini split AC. But, what exactly is a mini split AC, and how does it work? This in-depth article will cover everything you need to know about this revolutionary cooling technology.

What is a Mini Split AC?

A mini split AC, also known as a ductless mini split, is a type of air conditioning system that comprises an outdoor compressor/condenser and an indoor air handling unit. Unlike traditional systems that require extensive ductwork, the mini split AC connects the indoor and outdoor units through a conduit which houses the power cable, suction tubing, and a condensate drain. Now that we've identified what a mini split AC is let's dig into the functioning of this innovative HVAC system.

Understanding How The Mini Split AC Works

The mini split AC operates much like any other air conditioning system. It works by transferring heat from one location to another, to maintain the desired room temperatures. However, its unique design and features set it apart from conventional systems like the window AC.

The Refrigeration Cycle

A mini split AC cooling action relies on the refrigeration cycle which involve four main components: the compressor, condenser, expansion valve, and evaporator. The refrigeration cycle includes the following steps:

  • The cycle begins with the compressor, where the refrigerant is pressurized.
  • The refrigerant then moves to the condenser unit to release the heat that it carries.
  • This cooling refrigerant then passes through the expansion valve.
  • The cold refrigerant is sprayed into the evaporator to absorb the heat from the room's air, thus cooling the space.

Types of Mini Split AC Systems

The advent of modern technology has birthed different types of mini split AC systems. Understanding these various types would undoubtedly help you make an informed decision when choosing the ideal system to cool your home or office.

Single Zone Mini Splits

A single-zone mini split AC comprises one outdoor unit and one indoor unit. It's perfect for cooling a single room or an open floor plan. They are energy efficient and offer more cooling power than traditional window units.

Multi Zone Mini Splits

On the other hand, a multi-zone mini split AC involves a single outdoor unit connected to multiple indoor units. This type of ductless mini split is perfect for cooling multiple rooms at simultaneously. With a multi-zone system, you can control the temperatures of various rooms independently.

Why Choose a Mini Split AC?

There are numerous reasons homeowners and business owners are falling in love with mini split AC systems. From improved energy efficiency to flexible installation options, let's explore why these systems are gaining popularity.

Energy Efficiency

Mini splits AC are known for their high energy efficiency. Unlike traditional HVAC systems that lose a significant amount of energy through ductwork, mini splits are ductless, which means there are minimal energy losses.

Flexible Installation

Whether you're looking to install the system in a large living room or a compact home office, mini splits offer flexible installation. They can be mounted on the wall, ceiling, or stand freely on the floor.

Quiet Operation

With the noisy components located outside, mini splits are renowned for their quiet operation. This feature, coupled with their excellent cooling capabilities, offers an unmatched indoor environment, perfect for relaxation or concentration.

A mini split AC is a worthy investment for anyone seeking a reliable, energy-efficient, and flexible cooling solution. By understanding how it works, the types available alongside their benefits, you can move forward with confidence knowing you are making an informed decision suitable for your unique cooling needs.

Frequently Asked Questions About Mini Split AC

How does a mini split AC work?

A mini split AC, otherwise known as a ductless mini split, works by using two primary components: an outdoor compressor/condenser, and an indoor air-handling unit. These two components are linked by a conduit which houses the power cable, refrigerant tubing, and condensate drain. When in operation, the mini split AC works by cooling the air in individual rooms or zones, allowing for more personalized temperature control.

Where is the ideal location to install a mini split AC?

The indoor air handlers of a mini split AC should ideally be installed in a spot with good air distribution. Usually, they are mounted on the wall or ceiling and need to be located where they can be plugged into an electrical outlet. The outdoor component of the mini split AC can be installed on the ground or on brackets mounted on the wall, provided it's located in a spot with sufficient air flow and free of debris or obstructions.

Why does my mini split AC keep shutting off?

If your mini split AC keeps shutting off, there could be several reasons for this. The settings might be incorrect, the filters may need cleaning, the unit could be low on refrigerant, or there might be a problem with the compressor. If you are unable to diagnose the issue, it's recommended to seek help from a qualified technician.

Can I install a mini split AC myself?

While it is possible for a technically inclined individual to install a mini split AC, it's generally recommended that installation is carried out by a professional. That's because the installation involves handling refrigerant, drilling holes in your wall and ensuring all components are properly connected and safely installed. Incorrect installation could lead to operational issues or damage to the unit, and may void the warranty.

How often should a mini split AC be serviced?

For optimal performance of your mini split AC, it's recommended to have it serviced at least once per year. Regular servicing can extend the lifespan of your unit, improve its efficiency, and prevent potential breakdowns. During a service, a technician will clean the filters, check the refrigerant levels, and confirm the units are working effectively.

How long does a mini split AC last?

With proper care and maintenance, a mini split AC should last anywhere between 10 to 15 years. However, this can depend on various factors, such as how often the unit is used, the weather conditions in your area and whether it has been regularly serviced and maintained.

Is a mini split AC energy efficient?

Yes, a mini split AC can be a highly energy-efficient cooling option. As they don't require ductwork, they avoid the energy losses typically associated with ducted systems. Additionally, as they can be individually operated in different rooms or zones, they allow for better control of energy use. Energy Star certified models in particular offer even more energy efficiency.

Can a mini split AC provide heating?

Yes, there are models of mini split AC, known as mini split heat pumps, that provide both heating and cooling. These are a good option for climates with mild winters, as they can be more energy-efficient than traditional heating systems. Again, always remember to check if the unit you're considering offers both features before making a purchase.

Pros of Mini Split AC Systems

Energy Efficiency

One of the most significant advantages of mini split AC systems is their energy efficiency. Unlike traditional AC systems, mini splits do not lose energy through ductwork, which can account for a considerable percentage of energy loss. In fact, according to the U.S. Department of Energy, duct loss can account for more than 30% of energy consumption for space conditioning.

  • Compared to other air conditioning methods, such as central air, mini split AC units can save 20%-60% of energy.
  • The high SEER (Seasonal Energy Efficiency Ratio) ratings - sometimes up to 27.2 or more - that mini split AC systems boast adds to their energy-conserving appeal.

Easy Installation

Mini split AC units are notoriously easy to install compared to their ducted counterparts. They don’t require the extensive, invasive ductwork that traditional units do and can be installed in various strategic locations within the home.

  • They only require a small hole to be drilled into the wall to install the conduit.
  • Manufacturers of split system appliances usually provide a variety of lengths of connecting conduits.

Versatility and Flexibility

Mini split AC units offer flexibility for zoning or heating and cooling individual rooms. Many models have as many as four indoor air handling units for four zones or rooms connected to one outdoor unit.

  • Each zone can have its own thermostat, allowing you to condition each room individually and save energy and money in the process.
  • The number of zones you can have is largely dependent on how many indoor units your outdoor unit can support.

Cons of Mini Split AC Systems

Upfront Costs

The initial cost of a mini split AC unit can be relatively high compared to traditional window units or even some central HVAC systems. While the overall energy savings and zone-specific cooling can make up for this high upfront cost over time, it can still be a deterrent for some homeowners.

  • High-end models can run into thousands of dollars, and this does not include the installation costs which can also be substantial.
  • Ductless mini split AC installation costs are typically higher than other units because they require professional installation.


While functional and efficient, mini split AC units are not typically considered the most aesthetic addition to a room. Their disruptive presence on a wall can interfere with a home's interior design.

  • Some people may find the indoor units to be obtrusive, especially compared to other forms of air conditioning, such as central air, which is virtually invisible.
  • While some models can be relatively sleek and modern in appearance, they still stick out more than more discreet AC systems.

Must Be Professionally Installed

While mini split systems are easier to install than traditional AC units, they must still be professionally installed. Doing it yourself can void the warranty and potentially damage the system. Therefore, while you save on duct installation, you still have to pay for professional service, which can be costly.

  • Improper installation can result in poor performance and damage the system, so it's important to find a reputable, experienced installer.
  • Installation charges can vary based on a number of factors, including the complexity of the install, the number of indoor units, and more.


A mini split AC is a great choice for anyone who wants efficient and flexible cooling. You don't need to worry about cooling areas that aren't in use, and you can easily control the temperature in each room. More importantly, a mini split AC uses less energy, which helps reduce your carbon footprints while also saving on utility bills. Always remember, the lifespan of your unit relies on how well it is maintained.

Having a mini split AC in your home or office lets you enjoy optimum comfort without the need to crank up the whole central system. This feature makes it ideal for extensions, or for older buildings where installing ductwork can be challenging. It's also quieter than traditional systems - less noise, more comfort. After all, isn't that what we all want in the end?

Today, many people invest in a mini split AC to reap the benefits of customized cooling and energy efficiency. Coupled with hassle-free installation, this technology is a hard one to overlook. If you're looking for a way to level up your home's comfort without breaking the bank, give a mini split AC a try. You won't regret it.

About Perfect Air & Water Services

Welcome to Perfect Air & Water Services, your number one destination for all your HVAC needs in Lakewood, NJ. Our company is known for its quality, reliability, and exceptional customer service. We specialize in installing, repairing, and maintaining HVAC systems, providing you with the most comfortable and healthy indoor environment possible. Our team is comprised of dedicated professionals who are passionate about what they do, and are always ready to go the extra mile to ensure your satisfaction. Partner with us and experience the difference of Perfect Air & Water Services.