Home » Blog » What is a Ductless AC System? And How Does it Work?

What is a Ductless AC System? And How Does it Work?

Key Takeaways

Question: How does a ductless AC system work?

Answer: A ductless AC system, also known as a mini-split, operates without ductwork, reducing energy loss and increasing efficiency. It consists of an outdoor unit linked to indoor units via small cables and a refrigerant line. The system cools by compressing refrigerant that absorbs indoor heat, which is then expelled outside, delivering cool air directly from the indoor units.

When the summer heat waves hit Las Vegas, everyone’s looking for the most efficient ways to keep cool. That’s where a ductless air conditioning system comes into play, offering a sleek, versatile solution for cooling your home without the complexities and space requirements of traditional ducted systems. Here’s a detailed look at what a ductless AC system is, how it works, and why it might be the perfect fit for your home or office.

Understanding Ductless AC Systems

Ductless air conditioning systems, also known as mini-split systems, are growing in popularity, especially in areas like Las Vegas where efficient cooling is a must-have almost year-round. These systems are called ‘ductless’ because they do not require a network of ducts to distribute air throughout the property. Instead, they consist of an outdoor unit connected to one or more indoor units by small cables and a refrigerant line through a small hole in the wall.

Components of a Ductless AC System

  • Outdoor Unit: This houses the compressor, condenser coil, and expansion coil or capillary tubing.
  • Indoor Unit: This is an air-handling unit that includes the evaporator coil and fan. Each room that needs cooling can have its own unit, controlled independently.
  • Remote Control: Adjust temperature settings and modes for each unit from anywhere in the room.

How Does a Ductless AC System Work?

The operation of a ductless AC system is straightforward:

  • Cooling Process: The outdoor unit compresses the refrigerant, which flows to the indoor unit(s) through the refrigerant lines. As it passes through the evaporator coil in the indoor unit, the refrigerant absorbs heat from the indoor air, cooling it.
  • Air Distribution: The cooled air is then blown into the room by the fan in the indoor unit. There are no ducts involved, which minimizes energy loss and maximizes efficiency.
  • Heat Expulsion: The absorbed heat is transferred back to the outdoor unit where it is released outside.

Benefits of Installing a Ductless AC System in Las Vegas

  • Energy Efficiency: Ductless systems are more energy-efficient than traditional central air systems because there’s no loss of cool air through ductwork. This is particularly beneficial in the hot Las Vegas climate where air conditioning is a significant part of energy bills.
  • Customizable Cooling: Each indoor unit can be controlled independently. This means you can cool only the areas you use, further reducing energy usage and costs.
  • Easy Installation: Without the need for ductwork, these systems can be installed in a variety of locations, ideal for older homes or additions where extending or installing new ductwork is impractical or too expensive.
  • Improved Indoor Air Quality: With no ducts to gather dust, allergens, and other air pollutants, ductless systems can provide a healthier indoor environment.

Is a Ductless System Right for You?

Choosing the right air conditioning system depends on several factors including the layout of your home, your cooling needs, and your budget. Ductless systems are an excellent option for homes without existing ductwork, smaller or segmented spaces, or for adding air conditioning to new additions without the need for major renovations.

If you’re considering a ductless AC system for your home or business in Las Vegas, Evolve Air Conditioning & Heating can help. Our experts can provide you with all the information you need to make an informed decision, along with professional installation services to ensure your new system performs at its best.

Does your AC unit have you feeling the heat? Reach out to Evolve Air Conditioning & Heating in Las Vegas for a free quote today! We’re here to ensure you stay cool and comfortable, no matter the heat outside.


What are the main components of a ductless AC system?

A ductless AC system comprises an outdoor unit that contains the compressor and condenser, and one or more indoor units that include an evaporator coil and fan. Each indoor unit can be controlled independently with a remote control.

What are the advantages of installing a ductless AC system in Las Vegas?

Ductless AC systems offer several benefits, especially in a hot climate like Las Vegas. They are more energy-efficient than traditional systems due to minimal cool air loss. The systems provide customizable cooling, allowing different temperatures in various rooms, and they can be installed easily without ductwork, improving indoor air quality by reducing dust and allergens.

Is a ductless AC system suitable for any home?

Ductless AC systems are ideal for homes without existing ductwork, smaller or segmented spaces, or where major renovations for duct installation are impractical or too costly. They are also perfect for adding air conditioning to new additions efficiently.

How long does installation of a ductless AC system take?

Installation of a ductless AC system is relatively quick and non-invasive compared to traditional systems. Typically, it can be completed in about a day, depending on the number of indoor and outdoor units required and the complexity of the installation site.

Can ductless AC systems provide both cooling and heating?

Yes, many ductless AC systems are actually heat pumps, which means they can cool and heat your home. This dual functionality makes them an excellent year-round solution for maintaining comfortable indoor temperatures in varying climates.

What maintenance does a ductless AC system require?

Ductless AC systems require basic maintenance to operate efficiently, including cleaning the filters regularly, ensuring that there is no debris around the outdoor unit, and having a professional service check annually to maintain optimal performance.

How cost-effective is a ductless AC system compared to traditional systems?

Initially, the cost of a ductless AC system might be higher than traditional systems, especially if multiple indoor units are installed. However, the increased energy efficiency and lower energy bills can offset the higher upfront cost over time. Additionally, the ability to control temperatures in individual rooms can lead to further savings by cooling or heating only occupied spaces.

What is the lifespan of a ductless AC system?

With proper maintenance, a ductless AC system can last up to 20 years, which is comparable to traditional HVAC systems. Lifespan can be extended with regular maintenance and by ensuring that the system is used according to the manufacturer’s guidelines.

Are there any government rebates or incentives for installing a ductless AC system?

In some regions, including Las Vegas, there may be government or utility rebates and incentives available for installing energy-efficient systems like ductless ACs. Homeowners are encouraged to check local programs to potentially reduce the cost of purchase and installation.

Leave a Comment

Scroll to Top


$99 tune-up