What is a Split System Air Conditioner? All You Need to Know

A split system air conditioner is one of the most popular cooling solutions for homes and offices. It consists of two main components: an indoor unit that distributes cool air and an outdoor unit that expels heat.

These systems are known for their energy efficiency, quiet operation, and ability to cool specific areas without the need for ductwork. In this guide, we’ll break down how split system air conditioners work, explore their pros and cons and provide tips for choosing the right model for your space.

Whether you’re considering an upgrade or learning about cooling options, you’re in the right place.

How Does a Split System AC Work?

A split system air conditioner works by using two main units: an indoor unit and an outdoor unit. The indoor unit is responsible for cooling the air inside your home, while the outdoor unit releases the heat absorbed from inside. The two units are connected by refrigerant pipes that allow heat to be transferred.

Here’s how it works: the indoor unit pulls in warm air, cools it by passing it over cold refrigerant coils, and then blows the cooled air back into the room. The heat extracted from the air is sent to the outdoor unit, where it’s released into the outside environment. This cycle continues until your space reaches the desired temperature.

Split systems are energy-efficient because they can cool specific areas, and they run quietly since the noisy compressor is located outside. This makes them a popular choice for both homes and offices looking for comfortable cooling solutions.

Types of Split System Air Conditioners

When choosing a split system air conditioner, it’s helpful to know that there are several types designed for different spaces and needs.

Here are the main options:

  • Single-split systems: These are the most common type and consist of one indoor unit and one outdoor unit. Ideal for cooling or heating individual rooms.
  • Multi-split systems: This system connects multiple indoor units to a single outdoor unit, allowing you to cool several rooms or zones at once. It’s a great option for larger homes or offices.
  • Wall-mounted split systems: Popular in homes, these units are installed high on a wall and are compact, making them suitable for most rooms.
  • Ceiling cassette systems: Mounted in the ceiling, these units are less visible and distribute air more evenly, making them ideal for larger open spaces.
  • Floor-mounted split systems: Installed near the floor, these systems are great for spaces without much wall space or where ceiling installation isn’t an option.

People playing billiards (cooled by a cassette air conditioner)

Advantages of a Split System AC

Split system air conditioners offer several benefits that make them a popular choice for many homeowners.

Here are five key advantages:

  1. Energy efficiency: Split systems only cool specific areas, so you can save energy by targeting the rooms you use most, unlike central systems that cool the entire house.
  2. Quiet operation: The noisy components, like the compressor, are in the outdoor unit, making the indoor unit very quiet and ideal for bedrooms or living spaces.
  3. Easy installation: Since split systems don’t require ductwork, they’re easier and less invasive to install, especially in homes without existing duct systems.
  4. Temperature control: With split systems, you can set different temperatures for each room, providing personalised comfort for everyone in the home.
  5. Improved air quality: Many split systems come with filters that purify the air, removing dust, allergens, and bacteria to create a healthier indoor environment.

These benefits make split systems a convenient and efficient cooling option.

Disadvantages of a Split System

While split system air conditioners have many benefits, there are some drawbacks to consider before making a purchase.

Here are five disadvantages:

  1. Initial installation cost: Although split systems are less expensive than ducted systems, they still come with a significant upfront cost, especially if you need multiple units for different rooms (such as a multi-head split system).
  2. Limited cooling range: Split systems are designed to cool specific areas, so if you need to cool an entire home, you may need multiple units, which can be costly and require additional installation.
  3. Outdoor unit space: The outdoor unit can be bulky and may require space outside your home. It can also impact the exterior aesthetics of your house.
  4. Maintenance: Regular cleaning and maintenance are required to ensure optimal performance. This includes cleaning filters and occasionally checking for refrigerant leaks.
  5. Potential for indoor leaks: If not properly maintained, issues like blocked condensate drains can cause water leaks inside the home.

These factors should be considered when deciding if a split system is right for you.

Key Features to Look for in a Split System

When shopping for a split system air conditioner, there are a few key features to keep in mind to ensure you get the best performance and comfort for your home.

One important feature is inverter technology, which allows the system to adjust its cooling power based on the room’s needs. This not only saves energy but also provides a more consistent temperature.

Another feature to look for is smart controls. Many modern systems come with Wi-Fi connectivity, so you can control the unit remotely through your smartphone.

You’ll also want to consider air filtration options. Some split systems come with advanced filters that remove dust, allergens and even bacteria from the air, improving indoor air quality.

Lastly, look for quiet operation if you want a peaceful environment, especially in bedrooms or living areas. Choosing a system with these features will ensure you enjoy both comfort and efficiency.

Maintenance Tips for Split Systems

Keeping your split system air conditioner in good shape is essential for efficient performance and a longer lifespan.

Here are some simple maintenance tips to follow:

  • Clean the filters regularly: The filters inside your unit can get clogged with dust and debris, reducing airflow and efficiency. Clean or replace them every few months, especially during peak seasons.
  • Check for obstructions around the outdoor unit: Ensure the outdoor unit has enough space to release heat. Clear away any leaves, dirt, or debris that could block airflow and cause the system to overheat.
  • Inspect the coils: Both the indoor and outdoor units have coils that can accumulate dirt over time. Clean them periodically to maintain efficient heat exchange and avoid system strain.
  • Schedule annual professional maintenance: Have a technician inspect the system at least once a year to check refrigerant levels, clean components, and catch potential issues early.

Following these tips will keep your system running smoothly and save on energy costs.

A woman clears up debris from around an outside unit of a split system AC

Is a Split System AC Right for You?

Deciding if a split system air conditioner is right for you depends on your home, lifestyle, and cooling needs. If you’re looking for a cost-effective and energy-efficient way to cool individual rooms, a split system is an excellent choice. It allows you to control the temperature in specific areas, so you’re not wasting energy cooling unused spaces.

For homes without existing ductwork, split systems are perfect because they don’t require extensive installation. They’re also a great option if you prefer a quieter cooling system, as the compressor (which makes most of the noise) is located outside.

However, if you need to cool an entire large house, or if you’re looking for a system that can heat and cool multiple rooms simultaneously, you might want to explore other options like ducted air conditioning. Ultimately, split systems are ideal for those who want efficient, targeted cooling without the hassle of complicated installation.

Enjoy Long-Lasting Climate Control

A split system air conditioner is a highly efficient and flexible cooling solution, perfect for targeting specific areas in your home or office. With features like inverter technology, quiet operation and air filtration options, it offers comfort and convenience.

While there are some disadvantages, such as installation costs and maintenance needs, the benefits often outweigh them for those looking for energy-efficient and effective cooling.

By understanding how it works and following regular maintenance tips, you can enjoy a long-lasting and reliable system that keeps your space cool and comfortable year-round.

Please note: This information is provided for advice purposes only. Regulations differ from state to state, so please consult your local authorities or an industry professional before proceeding with any work. See our Terms & Conditions here.


Published: 1 October 2024