DuctlessAire 24,000 Btu 20.5 SEER Energy Star Ductless Mini Split Air Conditioner Review

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Last Updated: 12/16/2020

When shopping for an air conditioning unit, it is important to know what type of unit is a good fit for the space you’re cooling. Split-system units are a great option for homes and offices alike because they are quiet and less noticeable.

They are also becoming more and more efficient. Most central cooling units today are split-system units. Homeowners are drawn to them because they are cleaner, noiseless, and sleek. Not to mention, they can help save a lot of money!

This Ductless Aire unit is a small air conditioner. This is great because it makes the unit even less obtrusive in your space. It also comes with installation materials so that you can install it yourself without paying for the labor, which can be a huge money saver.

The unit is pre-charged, meaning the condenser is pre-charged with R-410a refrigerant. The unit is re-chargeable once the refrigerant is gone. It is also a high wall mount unit, so it is not meant to be installed close to the floor.

It has a SEER efficiency level of 21, which is also a great money saver. SEER, or Seasonal Energy Efficiency Ratio, is the level of cooling produced divided by the amount of electricity used (BTU/watts). If you intend to run the unit frequently, this level of efficiency can save you money on energy bills.
It also has a washable air filter included and 3 different fan speeds. The included remote allows you to change speeds from any room.

It’s efficient and powerful for a small air conditioner, with BTU capacities of 12000, 18000, and 24000 offered online.

DuctlessAire 24,000 BTU 20.5 SEER Energy Star Ductless Mini Split Air Conditioner

DuctlessAire Ductless Mini Split Air Conditioner

  • Size: 24000 Btu 21 SEER
  • 1,500 square feet
  • Turbo mode option
  • 25-foot installation kit

Pros and Cons


● Energy Star 20.5 SEER for stellar energy efficiency
● 25-foot full installation kit included for easy DIY installation
● Pre-charged with R410a refrigerant
● Washable HEPA Filter Included
● Turbo mode available, 3 fan speeds
● Whisper-quiet operation; one buyer even said it was so quiet that she “had to go to the back of the shop to see if it was even running”
● Comes with a remote to change temperature/fan speeds
● Self-diagnosis and auto-protection functions
● Auto restart and sleep mode
● Refrigerant leak detection, sleek LCD display, electroplated coils
Small air conditioner, doesn’t take up too much space


● There is no warranty if you install the unit yourself; you must use a licensed HVAC contractor if you want the warranty.
● If you do decide to install yourself, you must have the tools to do so because the installation kit doesn’t have all of the tools necessary for setup.

Overall, this air conditioning unit offers some great features, especially in regards to efficiency, size, noise, and BTU capacity. In the end, knowing what you need for the space you have will determine whether or not this unit is a good fit for you.

Remember to check compatibility by measuring the dimensions of the area you need to heat or cool and the available wall space before you buy.
Keep in mind that the efficiency of the unit is a big factor in how much money you will pay in energy costs down the road. Consider this when making the big decision and determining the cost of the unit. Often, the money will be made back in terms of money saved.

Unfortunately, due to state and federal regulations, the manufacturer recommends installation by a licensed HVAC technician. This means that their warranty will not apply if you install the unit yourself. This can add labor costs and may factor into your decision.

The unit is easy to control, and has plenty of modes and settings to find the perfect temperature all the time. It also comes with a remote control.

Additional Information on this Brand and Model

DuctlessAire is a company that specializes in ductless air conditioning systems and mini splits in particular. Their main focuses are high quality, quietness, and energy efficiency. They’ve been around for over 30 years and are based in Columbia, South Carolina.

A “ductless” air conditioning system simply means that it is an energy-efficient system that provides versatile indoor air conditioning without requiring standard HVAC ductwork to operate. Ductless air conditioners move warm air indoors from outside when in heating mode and move warm air outdoors from inside when in cooling mode.

When in cooling mode, the system moves the air over cold evaporator coils. The refrigerant in these coils absorbs the heat from the air and brings it to the outside unit. The indoor unit distributes the cooled air into the room that it is mounted in.

The absence of ductwork can be beneficial to those with allergies, as ductwork requires constant cleaning and maintenance. As mentioned earlier, these units are noiseless and sleek. This DuctlessAire model is no exception.

Charles Jasper

Charles Jasper is the owner and main author of Home Climate Center. He has a degree in Engineering and 20 years experience on working on HVAC systems. He has a passion for everything related to home improvement and loves to travel. When he is not working, you might find Jasper working on projects around the house or organizing a camping trip.

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