How Do Ductless Air Conditioning Systems Work?

Air conditioning and duct systems seem to go hand in hand. So, when an HVAC system operates without ducts, it may be difficult to understand how it could possibly be effective or efficient. The truth is, ductless air conditioning systems are just as effective as duct-based systems. Here’s what you need to know.

How do they work?

Ductless air conditioning works in a way that is similar to the operation of central air conditioning, but without the ductwork. The system takes in hot air from inside the home, removes the heat and moisture from that air and dumps that air and moisture outside the home.

The only significant difference is how the system distributes the cooled air. With ductless air conditioning, the system distributes the cooled air directly to each room. With a central air conditioning system, the system pushes cooled air from the main unit throughout the home through ductwork.

What are the main components of a ductless air conditioning system?

To cool a home, a ductless air conditioning system uses refrigerant, a compressor and a blower. The interior components are referred to as the evaporator, and the exterior unit is the condenser or compressor.

The refrigerant, which is a low-pressure liquid, removes the heat from the interior. When this happens, the refrigerant changes into a low-pressure gas. This gas moves to the compressor, which turns the refrigerant into liquid again, and disperses the heat to the exterior. The blower moves the cool air through the home.

But are they effective?

Yes! In fact, in some ways, ductless air conditioning may be more effective than central air. With this type of system, you can have up to four indoor units per one exterior condenser. That means you can establish cooling zones within the home to adjust your indoor cooling as desired. For example, you may want a bedroom to be kept cooler than a basement rec room.

When is ductless air conditioning a good solution?

Ductless air conditioning is a good option for homes that lack ductwork. Older homes, for example, may not have the venting system in place to support central air. For homes that feature radiant heat systems or heat panels, ductless air conditioning offers a way to easily provide cooling for the entire home.

What are the benefits of ductless air conditioning?

There are three main benefits to ductless air conditioning. The first is energy efficiency. Ductless units use between 20 and 30 percent less energy than central AC units.

The second benefit is also related to efficiency. With a central unit, the system loses a lot more of the cool air it produces. As the air is pushed through the ductwork, it loses up to 25 percent of its effect. With window units, much of the cool air is lost through the window. With ductless air conditioning, more cool air stays in the room.

The third benefit is noise reduction. Ductless air conditioning is quieter than central air conditioning systems.

Learn more

For more information about ductless air conditioning options for your property, contact the team at ASP. We are you local experts in plumbing, heating, cooling and ventilation systems for new and remodeled residential and commercial properties.