Air Conditioning Options: From No-Installation to Ductless Systems

Air conditioning has become an essential feature in many homes and apartments, providing comfort during hot summer months. With various types of air conditioning units available, it's crucial to understand the options to choose the best system for your space. This article explores different air conditioning solutions, from portable units to more permanent installations.

Air Conditioning Options: From No-Installation to Ductless Systems Image by Álvaro Bernal from Unsplash

What are No-Installation AC Units?

No-installation air conditioning units, also known as portable air conditioners, offer a convenient cooling solution without the need for professional installation. These standalone units can be easily moved from room to room and require only a power outlet and a window for the exhaust hose. They work by drawing warm air from the room, cooling it, and then recirculating the cooled air while expelling hot air through the exhaust hose.

Portable AC units are ideal for renters or those who need temporary cooling solutions. They’re particularly useful in spaces where traditional window units or central air conditioning systems are not feasible. However, they may be less energy-efficient compared to other AC types and typically cool smaller areas.

How Do Split AC Units Differ from Traditional Systems?

Split AC units consist of two main components: an indoor air-handling unit and an outdoor compressor/condenser unit. Unlike traditional window units, split ACs offer more flexibility in installation and can be a more aesthetically pleasing option. The indoor unit is typically mounted on a wall, while the outdoor unit can be placed on the ground or mounted on an exterior wall.

These systems are known for their energy efficiency and quiet operation. They can cool individual rooms or zones, allowing for customized temperature control throughout a home. Split AC units are also generally easier to install than central air conditioning systems, making them a popular choice for both new constructions and retrofits.

What Are the Benefits of Wall Mounted AC Units?

Wall mounted AC units, a type of split system, offer several advantages over traditional window units. These units are installed higher on the wall, which can improve air distribution and save floor space. They’re less obtrusive than window units and don’t block natural light or compromise window security.

Wall mounted units are typically more energy-efficient than portable or window ACs. They’re also quieter, as the compressor is located outside. Many modern wall mounted units come with advanced features like air purification, dehumidification, and smart controls, enhancing overall indoor comfort and air quality.

How Do Ductless Heating and Air Conditioning Mini Split Systems Work?

Ductless heating and air conditioning mini split systems are versatile solutions that provide both cooling and heating capabilities. Like standard split AC units, they consist of an outdoor compressor and one or more indoor air-handling units. The key difference is their ability to both cool and heat spaces, making them an all-in-one climate control solution.

These systems are highly efficient because they don’t lose energy through ductwork. They allow for zoned temperature control, meaning different rooms can be set to different temperatures. This feature can lead to significant energy savings by only conditioning occupied spaces. Mini split systems are ideal for homes without existing ductwork or for adding climate control to specific areas like additions or converted spaces.

How Do Apartment AC Units Work?

Apartment AC units can vary depending on the building’s design and age. In many modern apartments, individual split or mini split systems are common. These allow tenants to control their own cooling and often heating as well. Some older apartments may use through-the-wall AC units, which are similar to window units but are permanently installed in a wall opening.

In larger apartment complexes, central air conditioning systems may be used, with individual thermostats in each unit. These systems typically use a network of ducts to distribute cooled air throughout the building. Some apartments may also utilize packaged terminal air conditioners (PTACs), which are self-contained units often seen in hotels, combining heating and cooling functions in a single appliance.


AC Type Installation Complexity Energy Efficiency Best For
No-Installation (Portable) Low Low to Moderate Temporary or small spaces
Split AC Units Moderate High Individual rooms or small homes
Wall Mounted AC Units Moderate High Homes without ductwork
Ductless Mini Split Systems Moderate Very High Whole-home heating and cooling
Central AC (for apartments) High Moderate to High Large apartment buildings

Prices, rates, or cost estimates mentioned in this article are based on the latest available information but may change over time. Independent research is advised before making financial decisions.


Choosing the right air conditioning system depends on various factors, including your living situation, budget, and cooling needs. Whether you opt for a portable unit for flexibility, a split system for efficiency, or a ductless mini split for comprehensive climate control, understanding these options will help you make an informed decision. Consider factors such as installation requirements, energy efficiency, and long-term costs when selecting the best air conditioning solution for your space.