Can I DIY Install A Ductless Air Conditioner?

While the idea of installing a mini split system yourself may seem appealing, it’s crucial to recognize the complexities involved in such a task. A ductless air conditioning system, also known as a ductless mini split system, typically consists of at least one outdoor unit and an indoor unit that are linked by refrigerant pipes and electrical cables, which pass through a small wall opening. This installation process requires specific technical knowledge to ensure that everything is installed correctly. So, while you may be able to do it on your own, it is best to hire professional help. Professionals understand the nuances of proper installation, including securing the indoor units—which can be configured for wall mount, ceiling mount, in-ceiling, or floor mount—and ensuring all connections are airtight. Read through our guide to learn more about DIY install of a ductless air conditioner!

Ductless mini split systems, and heat pumps, operate through a two-part mechanism that combines an indoor evaporator unit and an outdoor unit along an exterior wall. The indoor unit is responsible for cooling the air within the living space. It does so by absorbing heat from the room’s air and circulating cooled air back into the environment. Contrastingly, the outdoor unit serves a critical function by expelling the absorbed heat outside, thereby facilitating continuous cooling. The two units are interconnected by a line set consisting of refrigerant tubing, which passes through a small hole in the wall—roughly the size of a baseball—to transport heat efficiently between them.

In addition to transferring refrigerant/refrigerant lines, this line set also incorporates electrical wiring to power the indoor unit and includes a drain line that allows for proper condensation disposal. As warm air is drawn into the evaporator unit, moisture condenses on its cold surface; this water must be drained outside to maintain optimal performance and prevent water damage inside. Overall, ductless air conditioning systems provide an energy-efficient solution for cooling specific rooms or areas without requiring extensive ductwork, making them ideal for retrofitting older homes or optimizing climate control in spaces with varying heating and cooling needs.

As mentioned above, while DIY installation of ductless mini – splits may seem like a good idea, it is best practice to at least consult a professional before doing so. Some of the benefits of professional installation are listed below.

Tackling a mini split installation without professional expertise may void warranties offered by manufacturers. Most companies require proof of installation by certified technicians to honor warranty claims. If something goes wrong—whether it’s a component malfunction or performance-related issue—homeowners might find themselves burdened with expensive repair costs that they would otherwise be covered for had they opted for professional installation. Beyond financial implications, there’s also the risk of damaging your property during the installation process both inside and outside your home, leading to further repair needs that could outweigh any initial savings from going the DIY route. Taking these factors into account is crucial when deciding whether to install on your own or hire a professional.

Overall, even when following installation instructions, the risks of DIY installation far outweigh the benefits. The size of ductless system you need can depend on the square footage of your home, electrical connections in your home, type of unit, and more. Take a look at our price estimator tool to see what is best for you. Visit Same Day today for any of your HVAC and Plumbing needs! Our certified professionals are always happy to help!