Ultimate Guide on How to Install Ductless AC in Your Home
Tips & Tricks

Ultimate Guide on How to Install Ductless AC in Your Home

Are you tired of sweating through the summer heat and seeking an efficient home cooling solution? Look no further! Our ultimate guide on how to install a ductless AC in your home is here to save the day.

Ductless air conditioning systems, also known as mini-splits, are gaining popularity among homeowners for their energy efficiency, improved indoor air quality, and ease of installation. Almost every HVAC contractor offers premium air conditioning services as part of their plans, with ductless AC installation featured in several offerings.

In this comprehensive blog post, we’ll walk you step by step through choosing the right location for installation, connecting refrigerant lines, and even provide maintenance tips to keep your ductless AC running smoothly.

Benefits Of Ductless AC Systems

Ductless AC systems offer numerous benefits that make them popular among homeowners, including easy installation, energy efficiency, improved air quality, and no need for ductwork.

Easy Installation

One of the primary benefits homeowners can enjoy with ductless AC systems is their easy installation process. Compared to traditional central air conditioning units that require extensive ductwork, installing a ductless system is quicker and less intrusive for your home’s structure.

For example, most ductless AC installations involve simply mounting the indoor unit on a wall or ceiling while connecting it to the outdoor compressor via small refrigerant lines. Unlike conventional HVAC systems, this doesn’t necessitate tearing down walls or dealing with complex projects like adding insulation or rerouting electrical wiring.

Energy Efficiency

One of the main benefits of ductless AC systems is their unparalleled energy efficiency. Unlike central air conditioning, which can lose significant amounts of cool air through leaky ducts, mini-split systems deliver cooled air directly to specific areas in your home.

Additionally, many modern ductless AC units come equipped with advanced features like programmable thermostats, which allow you to set and forget temperature levels for optimal energy savings throughout the day.

Improved Air Quality

One of the most significant benefits of installing a ductless AC system is its improved air quality. Unlike central AC systems that rely on ductwork to distribute cooled air, ductless units have individual indoor units that filter and circulate the air within each room.

This means that pollutants like dust, pet dander, and allergens are trapped in the unit’s filters rather than circulated throughout your home.

Another way ductless AC systems improve air quality is by reducing moisture levels in your home. With traditional central AC systems, excess humidity can build up if the cooling process isn’t efficient enough to quickly remove moisture from the air. Ductless units are designed to handle this more effectively without relying on an extensive network of ducts to transport cool air throughout your house.

No Need For Ductwork

One major benefit of ductless AC systems is that they don’t require any ductwork. This can be a game-changer for homeowners considering traditional central AC systems.

Ductwork can take up valuable space in your home and requires professional installation, which can add significantly to the overall cost. Alternatively, ductless AC units are much smaller and less obtrusive.

In addition to being more cost-effective during installation, ductless AC also operates with energy efficiency in mind. Because there’s no need for air to travel through a network of ducts before it reaches each room, there is far less energy lost in transit.

Step-by-Step Guide On How To Install Ductless AC

Installing a ductless AC in your home is easier than you might think. Our step-by-step guide covers everything you need to know, from choosing the right location to testing the system.

Choose The Right Location

Choosing the right location is crucial when it comes to installing a ductless AC system. You want to ensure that your system operates efficiently and effectively, which means selecting an ideal spot for both the indoor and outdoor units.

When choosing a location for your indoor unit, consider where you need cooling or heating the most in your home. It can be mounted high on walls, near doorways or windows, or even concealed within the ceiling. For the outdoor unit, make sure it’s situated in an open space without any obstructions like bushes or trees nearby that could interfere with airflow. The location of this unit should also allow ample room for servicing and maintenance purposes down the line as well.

Install The Outdoor And Indoor Units

Once you’ve chosen the right location for your ductless AC system, the next step is installing both the outdoor and indoor units. The indoor unit (also called the air handler) usually hangs on a wall cavity indoors while the outdoor compressor sits outside.

The installation process requires connecting refrigerant lines between both units. You’ll need to drill a hole through an external wall to run these lines, which can be done with minimal damage using specialized tools.

Once installed, test your new system’s cooling capabilities by setting temperatures before turning it on to ensure that everything runs smoothly.

Connect The Refrigerant Lines

After you have mounted the units, it’s time to connect the refrigerant lines. These lines are responsible for transporting refrigerant between the two units, which is what cools your home.

To do this correctly, you will need specialized tools such as a torque wrench and a vacuum pump. Once you’ve connected the lines, you will also need to test them thoroughly using a pressure gauge to ensure they’re holding up well under stress.

Test The System

Once you have installed your ductless AC system, it is important to test the system to ensure it functions properly. Turn on the power supply and check that both the outdoor compressor and indoor air handler are working correctly. Adjusting the thermostat, check that cool air is being blown out of the indoor unit.

It’s also important to ensure there are no leaks in the refrigerant lines and they are properly connected. If everything appears to be working well, let your new ductless AC run for a few hours before shutting it off and doing a final inspection.


In conclusion, installing a ductless AC system in your home can provide you with several benefits, such as energy efficiency, improved air quality, and easy installation. By following our step-by-step guide on how to install a ductless AC system and keeping up with regular maintenance, you can enjoy the perks of an efficient cooling system without the need for expensive ductwork.

With these tips and tricks, you’ll be able to make informed decisions about your home’s HVAC system and enjoy comfortable living all year round.

Photo by Gritt Zheng on Unsplash

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