There are several types of air conditioning systems available for different property types, and the right option depends on the space you need to cool, how many rooms require air conditioning, installation requirements, and how you plan to use the system.
The main types of air conditioners include window air conditioners, single-split systems, multi-split systems, ducted systems, and portable air conditioners.
Common Types of Air Conditioners
Window Air Conditioners
Window air conditioners are compact, single-unit systems designed to cool an individual room. The unit is installed directly into a window frame or a suitable wall opening, making it a relatively simple option for single-room cooling.
Single-Split Air Conditioning Systems
A single-split system consists of one indoor air conditioning unit connected to an outdoor compressor or condenser. The two units are connected by pipes, allowing the system to provide cooling and heating for an individual room or open-plan space.
Single-split systems are commonly considered for bedrooms, living rooms, offices and other individual spaces where fixed air conditioning is required.
Multi-Split Air Conditioning Systems
Multi-split systems connect several indoor units to a single outdoor unit. Each indoor unit can serve a different room, with individual temperature control available across the connected spaces.
This type of system can be useful when several rooms need air conditioning without installing a separate outdoor unit for every indoor unit.
Ducted Air Conditioning Systems
Ducted air conditioning systems distribute conditioned air through a network of concealed ducts and vents. The main equipment can be positioned out of sight, such as within a ceiling or loft space, while vents distribute heated or cooled air throughout different areas of the property.
Ducted systems can provide whole-property air conditioning where the building layout and installation requirements are suitable.
Portable Air Conditioners
Portable air conditioners are mobile, floor-standing units that can be moved between rooms. They normally use a flexible exhaust hose to remove hot air through a suitable window opening.
Portable systems can be useful when temporary or single-room cooling is required without installing a fixed air conditioning system.
Which Type of Air Conditioner Is Right for You?
The most suitable air conditioning system depends on your property, the number of rooms you want to condition, available installation space and how you intend to use the system.
For a single room, a single-split system may be suitable. If you need air conditioning across several rooms, a multi-split system can provide multiple indoor units connected to one outdoor unit. For whole-property applications, a ducted system may be considered where the building allows suitable ductwork.
Portable units offer a different approach because they can be moved between rooms without the same type of fixed installation.
If you are unsure which system is appropriate for your home or business, a professional air conditioning survey can help determine the most suitable option based on the property and your requirements.
Window Air Conditioner vs Others
| Feature | Window AC | Single-Split AC | Multi-Split AC | Ducted AC | Portable AC |
| Best for | Single rooms | Single rooms and open spaces | Multiple rooms | Whole-property cooling | Temporary or single-room use |
| Installation | Window or wall opening | Fixed indoor and outdoor units | Multiple indoor units with one outdoor unit | Requires ductwork | Minimal fixed installation |
| Portability | Low | Low | Low | Low | High |
| Multiple rooms | No | Usually no | Yes | Yes | No |
| Appearance | Visible in window/wall | Indoor and outdoor units visible | Several indoor units | Mostly concealed | Visible floor unit |
| Temperature control | Basic | Room-specific | Individual room control | Centralised | Basic |
| Suitable for permanent use | Yes | Yes | Yes | Yes | Sometimes |
| Installation complexity | Low to moderate | Moderate | Moderate to high | High | Low |
When Is a Window Air Conditioner a Better Choice?
A window air conditioner can be suitable when you need to cool a single room and have a suitable window or wall opening. It can provide a simpler alternative to a fixed split system, but it does not offer the same flexibility for cooling several rooms.
Single-Split Air Conditioner vs Other
| Feature | Single-Split AC | Window AC | Multi-Split AC | Ducted AC | Portable AC |
| Best for | One room or open space | One room | Multiple rooms | Whole-property applications | Temporary cooling |
| Fixed installation | Yes | Yes | Yes | Yes | No |
| Outdoor unit | Yes | Integrated | Yes | Yes | No |
| Multiple indoor units | No | No | Yes | Through ductwork | No |
| Individual room control | Yes | Limited | Yes | Depends on system | Yes, one room at a time |
| Appearance | Wall-mounted indoor unit | Window/wall unit | Multiple indoor units | Mostly concealed | Floor-standing |
| Heating capability | Available on many systems | Depends on model | Available on many systems | Available | Depends on model |
When Is a Single-Split Air Conditioner a Better Choice?
A single-split system is often considered when one room or a defined open area needs permanent heating and cooling. It provides a fixed solution without requiring the ductwork needed by a ducted system.
Multi-Split Air Conditioner vs Other
| Feature | Multi-Split AC | Single-Split AC | Ducted AC | Window AC | Portable AC |
| Best for | Multiple rooms | One room | Whole-property applications | One room | Temporary or single-room cooling |
| Indoor units | Multiple | One | Multiple outlets through ducts | One | One |
| Outdoor units | Usually one | One per system | One system | Integrated | None |
| Individual room control | Yes | Yes | Depends on system | Limited | Yes |
| Ductwork required | No | No | Yes | No | No |
| Installation | Moderate to high | Moderate | High | Low to moderate | Low |
| Fixed system | Yes | Yes | Yes | Yes | No |
When Is a Multi-Split Air Conditioner a Better Choice?
A multi-split system can be useful when several rooms require air conditioning but you want to avoid installing a separate outdoor unit for every indoor unit. Each indoor unit can serve a different room and provide individual temperature control.
Ducted Air Conditioner vs Other
| Feature | Ducted AC | Multi-Split AC | Single-Split AC | Window AC | Portable AC |
| Best for | Whole-property applications | Multiple rooms | Individual rooms | Individual rooms | Temporary cooling |
| Installation complexity | High | Moderate to high | Moderate | Low to moderate | Low |
| Ductwork | Yes | No | No | No | No |
| Indoor appearance | Mostly concealed | Visible indoor units | Visible indoor unit | Visible unit | Visible floor unit |
| Multiple areas | Yes | Yes | Limited | No | No |
| Individual room control | Depends on system | Yes | Yes | Limited | Yes |
| Permanent solution | Yes | Yes | Yes | Yes | Usually less suitable |
| Space required | Ceiling/loft space may be required | Indoor and outdoor space | Indoor and outdoor space | Window/wall space | Floor space |
When Is a Ducted Air Conditioner a Better Choice?
A ducted system can be considered when air conditioning is required across multiple areas and there is suitable space for concealed ductwork. It can provide a less visible installation than multiple wall-mounted indoor units.
Portable Air Conditioner vs Other
| Feature | Portable AC | Single-Split AC | Multi-Split AC | Ducted AC | Window AC |
| Best for | Temporary or single-room cooling | One room | Multiple rooms | Whole-property applications | One room |
| Portable | Yes | No | No | No | No |
| Fixed installation | No | Yes | Yes | Yes | Yes |
| Outdoor unit | No | Yes | Yes | Yes | Integrated |
| Installation requirements | Low | Moderate | Moderate to high | High | Low to moderate |
| Can move between rooms | Yes | No | No | No | No |
| Multiple-room cooling | One room at a time | Limited | Yes | Yes | No |
| Best for permanent installation | Not always | Yes | Yes | Yes | Yes |
When Is a Portable Air Conditioner a Better Choice?
A portable air conditioner can be useful when you need temporary cooling or want a unit that can be moved between rooms. It generally requires less fixed installation than split or ducted systems, although it still needs a suitable method of exhausting hot air from the room.
Call an Expert for Installation or Guidance for Your AC Unit
Stag Services Ltd provides professional air conditioning installation and repair services for homes and businesses. With more than 30 years of industry experience, our team can assess your requirements and recommend an air conditioning solution suited to your property.
Contact us to discuss your air conditioning requirements.
