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Best Ductless Air Conditioner 2019 • 4 Ductless Air Conditioners Reviews

Ductless air conditioners can cut energy costs and prevent the headache of dealing with an elaborate duct system. After analyzing numerous tests and reviews, we found the best ductless air conditioner to cool your space.

Ductless Air Conditioner Leaderboard 2019

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  PIONEER Air Conditioner WYS012AMFI22RL Amira 18000 BTU MRCOOL DIY 24K BTU PIONEER Air Conditioner 24000 BTU
Rating 9.93
very good
very good
Amazon rating
4.2 out of 5 stars
80 customer reviews

4.2 out of 5 stars
6 customer reviews

4.6 out of 5 stars
67 customer reviews

4 out of 5 stars
4 customer reviews
Brand PIONEER Air Conditioner Amira MRCOOL PIONEER Air Conditioner
Product Dimensions

31.5 x 7.5 x 11.6 inches

35.43 × 10.71 × 7.64 inches

42.52 x 13.19 x 8.90 inches

42 x 9.3 x 26.5 inches

Item Weight

18 pounds


185 pounds

55 pounds


12000 BTU



24,000 BTU






Cooling Capacity

12, 000 BTU/h

18000 BTU/h

24000 BTU/h

24,000 BTU/h

Heating Capacity

11, 800 BTU/h

18000 BTU/h

25000 BTU/h

24,000 BTU/h

Recommended Area

350~450 Sqf


1250 Sqf

1500 Sqf

Voltage Options

110/120 VAC

208-230 VAC

208-230 VAC

208-230 VAC

Remote Control





Compressor Warranty

1825 days

1825 days

2555 days

1095 days

Parts Warranty

730 days

365 days

1825 days

365 days

  • ductless mini split
  • heat pump system
  • arctic heating version
  • base pan heaters
  • single zone residential
  • minimalist heat pump design
  • inverter based products
  • save energy
  • ETL Certified and approved
  • modern design
  • quality engineering
  • high efficiency heat pump
  • quick hook-up
  • great air comfort
  • easy-to-use
  • high SEER ratings
  • high HSPF ratings
  • permanent washable air filters
  • modern design
  • very affordable price
Price Value
Where to buy
Large selection of Ductless Air Conditioners at affordable prices on
Wide range of top brands Secure Payment & Buyer Protection Free delivery from 29 Euro upwards Show Ductless Air Conditioner bestsellers on & save!

What is a ductless air conditioner?

Ductless Air Conditioner ReviewA best ductless air conditioner (also referred to as a duct-free or ductless split system) cools the home like a central or portable air conditioning system but without the use of ducts. The system can cool one zone using a mini-split configuration or provide cool air to multiple areas via multi-split arrangement. Some units are available with a heat function.

Mini-Split: This unit has a single indoor fan coil (or evaporator) and an outdoor condenser to cool one room.

Multi-Split: In multi-split configurations, a condensing unit connects to several evaporators to bring air into multiple rooms. In this arrangement, a thermostat can control all units simultaneously, or each unit can have its own thermostat.

How does a ductless air conditioner work?

A duct-free air conditioner operates using two main components—an indoor system and an outdoor unit. The indoor system includes an evaporator coil and a fan. The outdoor unit consists of a fan, compressor, and condensing coil. The units connect via line-sets, which contain tubing for drainage, suction, and refrigerant.

A best ductless air conditioner works by removing the warm air inside and transporting outside. The compressor converts low-pressure gas into a high-pressure gas. A fan breaks up the heat, moving it outdoors through a hose. In the process, the evaporator coil transforms the high-pressure liquid in the refrigerant into a low-pressure liquid so it can absorb any remaining heat inside the home and change it to cool air. Then, the fan circulates the cool air throughout the living area.

Advantages and Applications

Ductless Air Conditioner AdvantagesThe main advantage of a ductless AC is its flexibility. Since there are no ducts, you have better control over the cooling in your living or workspace. For example, you may have a room that stays cooler than other parts of the home. With a split air conditioner, you can set up the unit(s) to cool independent zones, so the air only goes where needed. Since you won’t waste energy cooling unnecessary zones; you will save on your utility bill, too. Other advantages of installing a ductless unit include:

No Ducts, No Energy Loss: Duct-free air conditioners avoid the energy losses related to systems that operate with ducts. In fact, best ductless air conditioner can save you up to 30% on your utility bill.

Easy to Install: Most units only require a three-inch hole through the wall to feed the wires. Even if you’re handy, you should consult an HVAC professional. Still, because they are easy to install, you shouldn’t have to pay an arm and a leg in labor costs.

Options: A best ductless air conditioner cools large spaces rapidly and efficiently. Additionally, they are less conspicuous than bulky window units. You will find ceiling, wall, and floor mount systems available.

Versatile: Most AC units have a variety of operating modes to allow you to customize the system to create a comfortable atmosphere. Some systems have heat, fan, dehumidifying, and timer functions.

Convenient: The mini-split system allows you to cool your home without opening walls to connect ductwork or remove window units at the end of the season.

Noise Reduction: Best Ductless air conditioner produces lower decibel levels than central and window air conditioners.

Ductless Air Conditioner ApplicationsImproved Air Quality: The debris and condensation from ducts can accumulate over time, which may present health concerns for allergy sufferers. Ductless air conditioning systems eliminate this problem. An advanced filtration system traps pollutants to keep dust from circulating in the home.

Better Temperature Control: With ductless systems, you can deliver precise cooling solutions to one or several rooms based on your needs. Furthermore, each person can adjust the temperature to his or her comfort level.

Energy Conservation: In central conditioning systems, ductwork is required through the home or building. These long pieces can become loose and develop holes over time, causing a loss of conditioned air. With best ductless air conditioner, there is no air loss.

Cost Effective: Because there are no air ducts, air moves straight to the desired area and starts circulating throughout the room. Therefore, you don’t have to run the unit for extended periods of time for it to reach a comfortable temperature. Plus, they are less costly to install than central air systems that require extensive electrical and ductwork.

Duct-free a/c units are ideal for homes that need supplemental cooling options. If you are adding a new addition to the home, your existing ductwork may prove inadequate, and duct expansion may be problematic.

However, a ductless system can be a great match in these types of situations. They are small enough to fit in attics and basements; quiet enough for bedrooms, recording studios, and home offices; and powerful enough to cool cabins and garages.

What types of Ductless Air Conditioning Systems Are Available?

There are several types of duct-free conditioning systems available. Depending on your home’s needs, you may want to install the a/c on the ceiling, wall, or floor. Usually, a ceiling unit connects to one outdoor unit to cover a large area. Wall and floor conditioning systems allow you to connect several indoor units to one outdoor unit.

Ceiling Cassette

Ceiling Cassette Air Conditioner ReviewThis unit’s dimensions start at 24” x 24” and is intended for use in large areas. It mounts to the ceiling and usually has a thick 1” grill, giving it a seamless look. Most units feature a built-in thermostat that detects the indoor temperature and regulates the air output. Options include systems with up to four vents to blow air in each direction.

You will find wired and remote controlled units available. They are ideal for spacious living rooms that suffer from hot spots.

A lift pump connects to a PVC pipe to channel condensation outside of the home. Since part of the unit is installed above the ceiling, it needs cables to hold it into place.


  • Provides excellent coverage in large rooms
  • Sends air where it is needed the most
  • Option to leave one or two vents open or closed
  • Suited for drop ceilings


  • Because of its size, you’ll need to check to make sure there is adequate space above the unit (10”-12”)
  • Must be installed in the center of the room to direct airflow adequately

Suspended Ceiling

Suspended Ceiling Air Conditioner ReviewThis model is an excellent alternative for rooms with insufficient clearance to install the unit above the ceiling. The suspended ceiling unit moves air over long distances. They are great for wide-open spaces, including basements and rooms with floor-to-ceiling windows. Unlike ceiling cassette conditioners that require installation in the center of a room, suspended ductless systems, mounted on the ceiling on an exterior wall.


  • Since the unit can condition air over long distances, fewer units are required
  • Mounts directly to the ceiling


  • Should not be installed in the middle of the ceiling


Wall Mount AC ReviewThis popular option is the most sought after and the least expensive. The unit works best in average sized bedrooms and bathrooms. It is compact, efficient, and the easiest to install. Since the AC has to be mounted at least 6 feet high, it is best to put this type of unit in an area where the ceilings are at least 7 feet tall to achieve optimal flow.

A large bracket secures the best ductless air conditioner to the wall. If you install the unit lower than the recommended height, hinder air distribution.


  • Some units come with sensors that detect human presence and switch to energy-saving mode if there are no occupants in the room.
  • Offer effective cooling


  • Must be mounted on an exterior wall so the drain tube can direct condensation outside
  • Unable to cool large rooms

Floor Mount

The floor mount sits at the bottom of an exterior wall about six inches above floor level. They work well in dining rooms, kitchens, and other areas that do not have a lot of furniture. It is ideal for small rooms or areas with slanted ceilings.


  • Perfect alternative to wall and ceiling mounted units
  • Cools small rooms effectively


  • Outdoor unit must be purchased separately


A concealed unit is installed out of view in a closet or utility room. This type of AC is used when a unit would look out of place on the ceiling, wall, or floor. They are ideal for new additions, basements, and sunrooms. Generally, concealed systems come with a control that mounts to the wall to adjust the temperature.


  • Sits flush with surrounding area, so only the grill is visible
  • Capable of supplying air to two closely situated rooms


  • N/A

Our Review Methods

Review Methods of Ductless Air Conditioner We studied a half-dozen best Ductless Air Conditioner reviews from independent sources. Professionals conducted reviews in a climate-controlled chamber to see how long it took the best ductless air conditioner to drop the temperature by 15 degrees. Once the desired temperature was achieved, experts measured how long it was maintained.

During our review, we noticed there a direct connection between a unit’s performance and its SEER rating. Besides analyzing performance, we examined energy efficiency and cooling capacity. Additionally, we evaluated the specs, manuals, and warranties of the brands we recommend. To validate our findings, we took into account the opinions of HVAC professionals, as well as the feedback from owners of duct-free systems.

What should I look for when buying a ductless air conditioner?

A major benefit of split air systems is the ability to run the units independently of each other if you plan to cool more than one room. When choosing a duct-free system, it is important to consider the number of zones you want to condition in the home, the BTUs and the mounting method. Also, check the SEER rating and look for the Energy Star label.

The area(s) you plan to condition is known as the zone(s). Each area of the home has an indoor unit control by its own thermostat, allowing you to set the temperature in each zone. If you plan to cool more than one zone, you can connect multiple indoor units to one outdoor unit.


BTUs (British Thermal Units) refers to the amount of power needed to cover the square footage of each zone. Naturally, the larger the room, the more BTUs required to cool the area. The higher the BTUs, the quicker the unit will cool the living space. Generally, it takes 9,000 to 10,000 BTUs to cool a 400 square-foot room. Add or subtract 1000 BTUs per every 100 square feet to figure out a unit’s cooling capacity. Also account for environmental factors like ceiling height, insulation, and climate.

For example, if your ceilings are over 8’ high, you need to increase the BTUs by 20 percent. Also, poor insulation and exceeding hot climates require an increase of a BTU increase of 30 percent. Regardless of the number of BTUs, you need, you should not run more than one indoor unit at the maximum at the same time.

Mounting Method

You have the option of installing the best ductless air conditioner on the wall, ceiling, or floor. Experts recommend placing wall and floor units on an exterior wall, so condensation can adequately be routed outside. Most ceiling units feature a pump mechanism for draining.

Efficiency Ratings

While searching for the best unit for your living space, it is essential to look for the SEER (Seasonal Energy Efficiency Ratio) rating. The rating will help you identify which air conditioner is the most energy efficient. Scores can range from 10 to 26. According to the U.S. Department of Energy, an effective conditioning unit will have at least a minimum of 13 or 14 SEER, depending on the climate where you live. Units with the highest numbers deliver superior cooling capabilities while using the least amount of electricity.

Energy Star Logo

Energy Star is a certification program managed by the Environmental Protection Agency. Units bearing the Blue Energy Star seal are guaranteed to deliver cost-saving energy efficiency solutions.

Leading Ductless Air Conditioner Manufacturers

We sifted through reviewing data and tons of reviews to find the top brands of best Ductless Air Conditioner. As you search for the best ductless air conditioner, you will come across familiar brands, as well as manufacturers you have never heard of before. There are also companies like Mitsubishi and Panasonic who earned their reputation in other industries, but also manufacturer duct-free systems.

  • Carrier
  • Senville
  • Pioneer
  • LG
  • Friedrich
  • Mitsubishi
  • Panasonic
  • Whytner
Named after a man that made modern air conditioning possible, Carrier continues to set the gold standard in ductless split systems. The company is known for producing whisper-quiet systems with superior energy consumption levels. Carrier units run longer at slower speeds to make your living environment more comfortable.
Senville is a leading air conditioner manufacturer specializing in high-efficiency units with compact designs. All the company’s systems come equipped with inverter compressors and have at least a S.E.E.R rating of 19. The units also feature a heat function, allowing you to enjoy cool air in warmer months and heating during cold months.
Pioneer uses the latest technology to build ductless units that deliver a powerful performance. Mini-split units have a capacity range from 9,000 to 36,000 BTUs. A built-in mechanism maintains the perfect temperature to condition your living space. Additionally, they operate silently so you can enjoy cool or warm temperatures without the annoying hum noise that you hear in inferior brands.
LG calls its mini-split systems the “Smart Alternative to Traditional Air Conditioning.” The company offers duct-free systems in an assortment of attractive designs to coordinate with a room’s décor. Some units feature both heat and cooling functions. They also come equipped with air purifying technology to deliver clean, fresh air.
Friedrich is a small air conditioner manufacturer based in San Antonio, Texas with a solid reputation. The company offers superior customer service via telephone and e-mail. Their duct-free systems are efficient, quiet, and durable and have a BTU range between 5,000 to 24,000.
Founded in 1921, Mitsubishi manufactures some of the most reliable and efficient air conditioners on the market. The company offers single and multi-comfort systems to help eliminate trouble spots. Mitsubishi multi-zone systems can handle up to eight rooms at once. It features a filter system that helps remove allergy and odors from the home.
Panasonic launched its home cooling division in 1958. The company manufacturers powerful, practical, and versatile a/c units. Features include wireless remote control, multiple fan speeds, and a timer. Units come with a host of customizable features for cooling and heating your living or workspace.
Whynter is a leading manufacturer of comfort systems that help enhance your living space inside and outside the home. The company’s line of best ductless air conditioner generates powerful airflows and come backed by a generous warranty.

Internet versus Retail: Where Should I Buy?

When deciding if you should purchase a best ductless air conditioner at a physical retail store, or online, you should carefully consider the advantages and disadvantages of each.


One of the major benefits of buying from a brick and mortar store is the ability to take the unit(s) home immediately. Also, you can speak with sales associates to get answers to any questions you may have. On the other hand, you have to be leery of buying from stores where the employees work on commission. They may be more interested in their paycheck than your bottom line.

Furthermore, you will be limited by the number of choices available at brick-and-mortar locations. Besides, some units are bulky and heavy, making them difficult to transport and fit in certain vehicles.


Ductless Air Conditioner BenefitsThere is a vast assortment of the ceiling, wall, and floor best ductless air conditioner on the internet. Online shops do an excellent job of providing descriptions of each model, so you know what to expect when the unit arrives. You can also review the opinions of actual customers who purchased the model you prefer. In doing so, you can find out if the appliance is easy to install and if it performs the way the manufacturer promises.

Another advantage of buying from e-tailers is the ability to get the unit(s) at a lower price and have it delivered to your door. The only disadvantage of purchasing online is that you have to wait for the item to arrive. However, most e-tailers ship the product the same day or next day. Depending on how far you live from the shipping location, you may receive the split systems within a few days.

Bottom Line

You can find the model you want at a price you can afford when shopping on the internet. In some cases, you may receive free delivery.

Ductless Air Conditioners Advice and Tips

If you’ve ever experienced the joy of strolling into an air-conditioned building on a blistering hot day, you know you just can’t put a price tag on that kind of bliss. Still, a few people would rather bear the heat than add the expense of an air conditioning system. Nevertheless, if you are among those who are tired of the heat, you can look forward to years of comfort with a best ductless air conditioner.

Buying Tips

Look for special features like timers, programmable thermostats, and easy-to-remove filters when searching for a system to cool your home. Some models even come with Wi-Fi capabilities, so you can monitor and control your AC from your phone. With timers and programmable thermostats, you can avoid having the system run while you are away from home and set it to start cooling at a specific temperature before you arrive home.

A dirty filter will cause your ductless AC unit to work harder. An easy-to-remove feature allows you to remove the part with little effort for quick cleaning. Also, search for units with a digital thermostat and easy-to-operate controls.

Sizing Tips

Buying Tips For Ductless Air ConditionerProper sizing is required for a unit to condition the space efficiently. If it is too small, it will have to work too hard to operate. If it is too large, you waste energy. Either way, you will use more energy than needed and increase operating costs. Have a professional assess your space to perform a load calculation. He or she will evaluate structural characteristics, climate factors, and temperature needs. Still, it helps if you know how to calculate the space yourself.Generally, each square foot of living space needs 20 BTUs. You also have to account for ceiling height, areas without doors, and the weather in your region. To find out the number of BTUs needed to condition a space, multiply the length and width of the area. If cooling two or more rooms that are not separated by a door, such as a living room, kitchen, and hallway, add the totals together. According to Energy Star, you will also need to make adjustments for shaded and sunny areas. Therefore, increase the capacity by 10 percent for heavily shaded areas and decrease it by 10 percent for areas that get a lot of sun. You will also need to add 600 BTUs for each person if more than two people frequently occupy the space.

Energy Saving Tips

Set your AC to a comfortable temperature and avoid turning it on to the highest level. An excellent point to start is 78 degrees. Not only does this help save energy, but cranking it up to the maximum level is extremely inefficient. In contrast, since temperatures tend to drop at night, you should decrease the temperature after the sun goes down.

Also, keep lights turned off during the day or use cool running lightbulbs to help reduce heat. When you are away from home, close the blinds and drapes to keep the sun out and the cool air inside. You should also turn up the thermostat, so the unit runs less often (or not at all) when no one is home.

Maintenance Tips

Perform regular maintenance to ensure your AC runs at peak efficiency. Consult with the manual that comes with the unit for instructions for cleaning and replacing the filter and other components. For most systems, a scrub brush, warm soapy water, and a vacuum will be all you need. We dedicate an entire section to this topic under the heading Caring for Your Ductless AC Unit.

Data, Facts, and Figures about Air Conditioners

Up until the 1940s, air conditioning was considered a luxury. During the 40s and 50s, the air-conditioning industry changed its marketing strategy to convince employers that installing the system in the workplace would increase productivity. This concept was backed by research, which showed typists increased their output by 24 percent when working in a cool environment. In a survey, 90 percent of employers who had the units installed, reported that air conditioning improved office efficiency. In 1947, S.F. Markham, a British scholar wrote, “The greatest contribution to civilization in this century may well be air-conditioning—and America leads the way.”

  • The term air conditioning was coined by Stuart Cramer, a textile mill engineer. He designed a ventilating device to add water vapor to the air, making yarn easier to spin.
  • The first home air conditioning system was put in the mansion of Charles Gates of Minneapolis. The unit stood 7’ high, 6’ wide, and 20’ long. However, there is no proof the system was ever used since no one ever occupied the home.
  • In 1931, a window air conditioner costs between $10,000 and $50,000.
  • The U.S. built the first power plant in 1942 to handle the heavy electrical load caused by air conditioning units.
  • The Best Ductless air conditioners run on a refrigerant known as R410A. It has zero-ozone depletion, reducing negative environmental impact.
  • According to Energy Star, the average household spends nearly 20 percent of its utility bill to cool the home.
  • Running a ceiling fan in combination with an AC unit can reduce cooling costs by up to 14 percent.
  • Each degree the thermostat is lowered adds two percent to your energy bill.

The History of Air Conditioning

Ductless Air Conditioner HistoryBefore the invention of air conditioning, people living in the U.S. experienced a series of uncomfortable days and sleepless nights. Ordinary folk tried everything to make the heat bearable including fanning themselves with paper and running inefficient electric fans. The wealthy hoarded snow and ice or had servants fan them with large leaves. Cool relief from an automated device did not come until the 20th century.

Benjamin Franklin and British chemist John Hadley are credited with coming up with the concept that led to the development of cooling systems in 1758. While experimenting with ways to lower air temperature, they discovered that as liquids evaporated the surrounding air lost energy, cooling the air within its vicinity. Then, in 1830, Dr. John Gorrie figured out how to cool an area by blowing air across the ice. Four years later, Jacob Perkins came up with a practical system, which contained a compressor, condenser, and evaporator.

About 50 years later, Willis Carrier was working on a device to remove humidity from the air to prevent the paper from wrinkling. At the time, he worked in Brooklyn at a lithographing and publishing company. In 1902, Carrier perfected this instrument, developing what is known as air conditioning. The new technology, known as an air treatment apparatus, consisted of a coil system that carried air in both directions. As the coils cooled, they removed the humidity from the air. With this breakthrough, he enlisted the services of a group of fellow engineers and formed the Carrier Engineering Company in 1915. The early model was unpredictable and required a few adjustments. By 1922, after implementing a few tweaks, the group developed a model that could effectively move cool air through a building.

Carrier, who is referred to as the “Father of Air Conditioning” launched his invention by installing it in the Rivoli Theater in Times Square on Memorial Day weekend in 1925. From that day on people flocked to the theater to get relief from the hot summer sun, increasing revenue at the theater. Later, department stores would add air conditioning to their building to draw customers. Soon after, companies installed units in their offices to increase productivity.

Before Carrier’s invention, engineers would reverse the heating process to cool the rooms in a building. Unfortunately, the unit did not always deliver air at the temperature desired. Sometimes it was hot and muggy, and other times it was ice-cold.

During the late 1920s and into the early 1930s numerous innovators sought to find solutions to cool the home. Frigidaire came up with a split system shaped like a radio cabinet. However, it was bulky, expensive and needed a separate condensing unit for operation. Later, General Electric adopted the design, developing 32 prototypes in one year. In 1931, inventors J.Q. Sherman and H.H. Schultz designed the first window unit. However, they were costly, so the average person was unable to afford one.

Development of Ductless Air ConditionerThe decade between 1960 and 1970 saw the rise of central air conditioning units. As central systems rose in popularity, window units became affordable. With so many people running air-conditioned units, the U.S. was confronted with an energy crisis. As a result, the U.S. government imposed strict standards, requiring manufacturers to make energy-efficient models.

As manufacturers sought ways to merge energy efficiency and comfort, the sales of air conditioners continued to increase. By 2007, 86 percent of American households purchased the energy-efficient appliance in the home. Today’s non-ducted air conditioners consume about half the energy as they did decades prior. They operate on the same principle as early models, but feature advanced components, making them quieter and more energy efficient than their ducted counterparts.

Troubleshooting Tips

You should have advanced knowledge of HVAC systems or solicit the services of a professional if you have problems with your AC. In fact, some states require a certified expert to perform certain repairs, especially when a refrigerant is involved. However, you should be aware of these troubleshooting tips before calling an HVAC expert for service.

  • Stopped Running
  • Not Blowing Cool Air
  • Leaking Water
If the AC stops running, check the fault code located on the fan coil. In some cases, the display will show the letter E followed by a number. Look up the code in the owner’s manual and follow the instructions to get the unit operating again. If the display is blank, check the breaker or fuse. You should also check the remote control to make sure it is in the proper running mode.
Check the filter for debris buildup. Give a thorough cleaning, if necessary. Also, check the fan to make sure it is not obstructed with ice or a foreign object. Take a look at the control board or motor if the fan is working.
Inspect the drain hose to make sure is not clogged. To do this, stick the end of the outside tube in a bottle of water and wrap your hand around the bottle opening. Then squeeze the bottle and pull out the hose. This should flush out anything stuck in the hose. If there is no clog, check the fan coil. The fan coil should be sloped so that the end connected to the tube is slightly lower.

Caring for Your Ductless AC Unit

Performing routine cleaning and maintenance will keep your AC running at optimal levels. Turn the unit off and follow the manufacturer’s recommendations.

  • You may need to clean your filter once a month or every three months depending on how often the unit runs and the quality of the air in your home.
  • Vacuum the debris before washing the filter in warm, soapy water. Before reinstalling the screen, make sure it is dry.
  • Check the evaporator coil when you remove the filter for cleaning. Use a vacuum with a brush attachment to avoid damaging the coil.
  • Most units have built-in timers to keep the unit from starting right after it has been shut down. If the system does not have a built-in timer, make sure you wait at least five minutes before restarting the unit. Otherwise, you can put stress on the compressor.
  • Free dust and dirt from the grill with a vacuum and a toothbrush and wipe clean.
  • Give the drain hose and catch pain a thorough cleaning.
  • Inspect the outdoor unit regularly to make sure it does not have grass, leaves, and other debris interfering with the airflow. Use a garden hose to spray the unit and let dry.
  • The pipes provide a pathway between the inside and outside components of the ductless mini-split. Therefore, you should make periodic checks to prevent the accumulation of dust and dirt.
  • Ductless systems can collect ice, which will hinder their ability to operate efficiently. Perform regular checks on the outdoor unit and remove ice if necessary.
  • During the winter, make sure to protect the AC from the elements.


Once you’ve decided on the best ductless system to condition your home, you will need a few accessories to ensure the unit performs adequately. You will find a list of essential components listed below.

  • Line Set: This pair of copper tubes attach the indoor unit to the outdoor unit and allows refrigerant to flow between the two. Measure the distance between the appliances to minimize installation time and costs.
  • Line Set Covers: The covers snap around the line set to prevent rain, wind, sun, and animal damage.
  • Drain Tubing: Once condensed air turns to a liquid, a drain tube provides a channel for the water to flow to a predetermined location outside.
  • Whip and Disconnect Box: A whip is a flexible metal tube with wires inside. It is used to connect the disconnect box to the unit outside. The box is necessary to allow a technician to cut the power supply off if service or repairs are necessary.
  • Connecting Cable: The cable connects the indoor and outdoor units so they can communicate.
  • Condensation Pump: In situations where it is impractical to install a drain line, a condensation pump can be substituted to push the water to a drain location.
  • All-In-One Kits: Instead of purchasing each piece individually, you can buy a ductless air conditioning kit with all the components needed for installation.
  • Condenser Pad: This piece provides a flat, stable surface for mounting the best ductless air conditioner and reducing vibration and noise.
  • Brackets: Brackets allow you to secure outdoor units when mounting them on a second floor or higher.

Frequently Asked Questions

Can I install a ductless system myself?

Can I install a ductless system myself?

A best ductless air conditioner is not a simple plug-in device. Therefore, professional installation is recommended. It needs the proper level of coolant, an extensive wiring of volt lines and breakers, as well as the appropriate components for drainage. If you decide to install the appliance yourself, make sure you follow the manufacturer’s instructions. Making shortcuts could void your warranty.

How do I know what size system I need?

How do I know what size system I need?

You will need to measure the area that you intend to cool. For 150 to 250 square feet, you will need a unit with 6,000 BTUs. Add 1,000 BTUs for each additional 50 square feet of footage. For example, if you have to cool a space that is 300 square feet, you will need 7,000 BTUs, 350 square feet, 8,000 BTUs and so on. You can also find online calculators that will add and subtract for environmental factors and the number of occupants that share the space.

How efficient are best ductless air conditioners?

How efficient are best ductless air conditioners?

Ductless AC units use between 25 to 50 percent less energy than conventional AC systems.

Experts recommend installing wall and floor units on an exterior wall for proper drainage. If there is no space on the wall or floor, more than likely a professional will recommend installing a ceiling unit.

What are other functions available on best ductless air conditioners?

What are other functions available on best ductless air conditioners?

Some ductless A/Cs have fan and dehumidifier functions. You will also find models that work with a heat pump or electric strips to keep homes warm in the winter.

What does is IAQ mean?

What does is IAQ mean?

IAQ is an acronym for Indoor Air Quality. Most mini-split units come equipped Ductless mini split systems come furnished with a purification agent to remove harmful pollutants and irritants to make the air more comfortable.

How long do ductless systems last?

How long do ductless systems last?

Typically, the units have a lifespan of 10 to 15 years.

Can I get a rebate if I install a best ductless air conditioner?

Can I get a rebate if I install a best ductless air conditioner?

Many utility companies offer rebates on certified Energy Star air conditioners. Check with your utility company to see if a rebate is offered. Also, check out federal tax credits.

Will I need to use my ducted air conditioning system in conjunction with a best ductless air conditioner?

Will I need to use my ducted air conditioning system in conjunction with a best ductless air conditioner?

Using a ducted AC with a ductless system defeats the purpose. Although the units can run simultaneously, it is not recommended.

How are ductless AC units controlled?

How are ductless AC units controlled?

The systems may operate with a battery-powered remote or a wall-mounted unit. Also, some systems come Wi-Fi enabled so you can control the unit via smartphone. Depending on the system, you can set the desired temperature for each zone, program different settings for day and night, and switch modes.

Alternatives to Ductless Air Conditioners

Different Types of Air ConditionersThere are several alternatives to ductless air conditioning systems. The most common are the window and central air conditioners. Below we list all the other options available.

Window Air Conditioners mount to a window to cool the room where it is installed. The exhaust system pushes hot air out of the back and sides and drips condensation to the ground below.
Central Air Conditioners move cool air throughout the entire home through the same ducts that supply heat.
Portable Air Conditioners resemble window units but do not require a window installation. Instead, they come with a large exhaust hose to channel the warm air outside. Since the exhaust fan is contained inside the appliance, it tends to be noisier than other types of conditioning units. However, they are incredibly light and can move from room to room with ease.
Through-the-Wall Air Conditioners cannot be removed once installed because a hole must be cut into a wall of the house. Since an airtight seal is created once the unit is mounted into place, it is more energy efficient than window units.



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