Best Ac Unit For Horizontal Sliding Window (2024 Updated)

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As the summer heat sets in, finding the best air conditioning unit for your home or office becomes a top priority. But if you have a horizontal sliding window, it can be challenging to find the right AC unit that fits properly and provides efficient cooling.

To help you make an informed decision, here are five key points you should consider when looking for the best AC unit for a horizontal sliding window:

1. Size and Capacity: Choose an AC unit that matches the size of your room, as well as the cooling capacity you need. A unit that is too small will struggle to cool the room, while a unit that is too large will waste energy and cost you more.

2. Installation: Look for an AC unit that is easy to install in a horizontal sliding window. Some units come with installation kits, while others require professional installation.

3. Energy Efficiency: Choose an AC unit that is energy efficient, as it will save you money on your utility bills in the long run. Look for units with an Energy Star rating.

4. Noise Level: Consider the noise level of the AC unit, especially if it will be installed in a bedroom or office. Look for units with low decibel ratings.

5. Features: Look for additional features that will enhance your comfort, such as adjustable fan speeds, remote control, and programmable timers.

By considering these key points, you can find the best AC unit for your horizontal sliding window that will keep you cool and comfortable all summer long.

10 Best Ac Unit For Horizontal Sliding Window

1. Portable Ac Window Kit With Adjustable Seal & Exhaust Hose For Horizontal/vertical Windows – 1.5m Hose Included.

The HOXHA Portable Air Conditioner Window Door Kit is a comprehensive package that includes everything you need to set up your portable air conditioning unit for efficient and effective cooling. The kit includes a 59-inch long, 5.9-inch diameter exhaust hose, four seal plates that are adjustable in length from 17 to 67 inches, a duck coupler, a coupler filter, sealing tape, and four screws.

One of the most significant benefits of this kit is its versatility. It is suitable for use with most horizontal and vertical sliding windows and doors. The seal plates can be combined to create a two-board, three-board, or four-board combination to fit the size of your window or door. The kit is easy to install, and you don't need any tools to slide the sealing plates and lock them into place. The adjustable length range is 17 inches to 67 inches for windows and 21.7 inches to 82 inches for doors.

The exhaust hose that comes with this kit has an anti-clockwise thread direction, so it's essential to ensure that this is compatible with your portable air conditioning unit before purchasing. The diameter of the hose is 5.9 inches, and it comes in two length options: 1.5 meters (59 inches) and 2 meters (78.7 inches). This makes it compatible with most portable air conditioning units on the market.

The window seal kit is constructed from high-quality PVC, which is anti-extrusion and anti-aging, ensuring that it can be used year after year. The kit's simple and stable fixing method makes it easy to install and disassemble, making it suitable for use in homes or offices. It's also easy to store, saving valuable space in your home.

One of the most critical elements of any air conditioning kit is its sealing performance. The adjustable plate needs to be inserted into the fixed plate, creating a gap that must be sealed to prevent hot air from entering your room. The kit comes with a 3.5-meter sealing strip that attaches to the connection between the sliding window and the plate, effectively keeping your room cool at all times and saving power.

Overall, the HOXHA Portable Air Conditioner Window Door Kit is an excellent investment for anyone looking to make the most out of their portable air conditioning unit. Its versatility, durability, and superior sealing performance make it an essential addition to any home or office.

2. Adjustable Window Kit For 5.9" Ac Exhaust Hose – Ideal For Portable Air Conditioners.

The UNAOIWN Portable Air Conditioner Window Kit is an essential accessory for anyone who uses a portable air conditioner. This kit is compatible with all air conditioning 5.9-inch vent hoses, regardless of whether they are clockwise or counterclockwise. It includes four plates, a 5.9-inch diameter duck coupler, a filter, and four screw accessories. This kit does not include an AC hose or AC unit.

Made of high-quality PVC, the window seal kit is durable and can be used year after year. It is anti-extrusion and anti-aging, and its simple and stable fixing method makes it easy to install and disassemble easily. It is suitable for use in homes or offices and is easy to store, saving space.

The UNAOIWN window kit is suitable for most vertical and horizontal sliding windows. It can be used in any place, and you can make any combination according to the size of the window. You can use a 2-board combination, a 3-board combination, or a 4-board combination. No tools are required, and the AC exhaust kit is easy to slide the sealing plate and quickly lock. The adjustable length range is from 17 inches to 65 inches.

The kit also comes with a sealing strip that is attached to the connection between the sliding window and the plate. This ensures excellent sealing performance and keeps your room cool at all times. The sealing strip effectively isolates the hot air from entering and saves power.

At UNAOIWN, they promise to cover any issues that might occur and provide unconditional returns. They also offer 24-hour online customer service to ensure 100% customer satisfaction. Customers can rest assured when purchasing any item from UNAOIWN.

In conclusion, the UNAOIWN Portable Air Conditioner Window Kit is a universal and durable solution that offers excellent sealing performance. It is suitable for most sliding windows and easy to install and disassemble. With the inclusion of a sealing strip, it effectively isolates hot air, saving energy and keeping your room cool. The customer service offered by UNAOIWN also ensures that customers are satisfied with their purchase.

3. Portable Ac Window Vent Kit With Adjustable Plate And Exhaust Hose.

The JENCEAILL Portable AC Window Vent Kit is a high-quality product designed to provide optimal ventilation for your air conditioning unit. With an anti-clockwise thread direction, this kit is suitable for a wide range of AC units and can be easily installed on both vertical and horizontal sliding windows or doors.

The kit includes 4 seal plates, 1 exhaust hose, 1 exhaust hose coupler/adaptor, 1 coupler filter, 1 roll of sealing tape, and 3 screws, making it a comprehensive solution for your ventilation needs. The diameter of the exhaust hose is 5.9 inches, ensuring efficient air flow and maximum cooling power.

The JENCEAILL Portable AC Window Vent Kit is adjustable, with a maximum length of 62.1 inches, making it suitable for virtually any window or door. The kit is easy to install and disassemble, and comes with 16 feet of weather stripping to ensure a strong seal between the window and the seal panel.

One of the key benefits of the JENCEAILL Portable AC Window Vent Kit is its ability to effectively diffuse hot air out of the window, while preventing warm air from circulating back into the room. This not only keeps your room cool for longer, but also saves power, making it an eco-friendly solution for your home.

Made from high-quality PVC and ABS materials, the JENCEAILL Portable AC Window Vent Kit is built to last, ensuring that you can enjoy cool, refreshing air for years to come. And with JENCEAILL's commitment to customer satisfaction, you can rest assured that you are getting a product that is backed by excellent after-sale service.

In summary, the JENCEAILL Portable AC Window Vent Kit is a versatile, easy-to-use solution for all your air conditioning needs. Whether you are looking to cool a single room or your entire home, this kit provides the perfect combination of efficiency and convenience.

4. Portable A/c Window Kit With 5.1" Hose & 5-Piece Seal For Sliding Windows.

The MQIDLFE Portable Air Conditioner Window Vent Kit is the perfect solution for individuals who want to keep their rooms cool and comfortable during the hot summer months. This kit is designed to fit all air conditioner exhaust hoses with a diameter of 5 inches, making it suitable for use with various brands of portable air conditioners and other air conditioning accessories.

The window vent kit is made of high-quality PVC, which is anti-extrusion and anti-aging, ensuring durability and long-lasting use. When not in use, the kit can be removed and stored in a space-saving manner.

The MQIDLFE air conditioner window vent kit features a good sealing effect that prevents air conditioning leakage and hot air from entering, resulting in energy savings. The plates embedded in the window track and clamped tightly provide a good sealing effect that keeps your room cool at all times.

The kit is easy to install, thanks to its humanized slide rail design, adjustable length range (16.9 inches- 48.8 inches), and convenient installation video. The kit includes two adjustable plates measuring 16.9 inches each, one fixing plate measuring 16.9 inches, one exhaust hose adaptor measuring 5.1 inches, and two screws.

The MQIDLFE Portable Air Conditioner Window Vent Kit is an excellent choice for individuals who want to keep their rooms cool, comfortable, and energy-efficient. Its durable material, good sealing effect, and easy installation make it the ultimate solution for all your air conditioning needs.

5. Portable Ac Window Kit With 5.9" Exhaust Hose, Adjustable Plates For Sliding Windows, 59" Hose Included.

The HOXHA Portable Air Conditioner Window Kit is a cost-effective solution for those in need of a complete set of accessories to effectively cool their space. The package includes four adjustable Seal Plates, a 59-inch Exhaust Hose with a 5.9-inch diameter, a round Coupler, a Coupler Filter, Sealing Tape, and four Screws.

The AC exhaust hose has an anti-clockwise thread direction, which makes it compatible with most portable air conditioners on the market. The high-quality PVC material used in the UNAOIWN window seal kit is anti-extrusion and anti-aging, ensuring durability and longevity. The simple and stable fixing method allows for easy installation and disassembly, making it suitable for home or office use.

The kit is designed for both vertical and horizontal sliding windows, and the length can be adjusted from 17 inches to 67 inches to fit any window size. The kit's adjustable plate can be combined with a fixed plate to form a 2-, 3-, or 4-board combination. No tools are required, making it easy to slide the sealing plate and quickly lock it in place.

To ensure excellent sealing performance, the kit includes a 3.5-meter sealing strip that attaches to the connection between the sliding window and the plate. This effectively isolates hot air from entering, keeping the room cool at all times and saving power.

In summary, the HOXHA Portable Air Conditioner Window Kit is a comprehensive and effective solution for those in need of a complete set of accessories to cool their space. The durable materials, adjustable design, and excellent sealing performance make it a reliable and cost-effective option for both home and office use.

6. Keystone 8,000 Btu Slider Air Conditioner For Casement Windows And Walls With Dehumidifier And 4-Way Air Direction Control, Ideal For Small-Medium Rooms Up To 450 Sq.ft.

The Keystone 8,000 BTU Slider Casement Window-Wall Air Conditioner and Dehumidifier is a reliable and convenient cooling option for small to medium-sized rooms up to 450 square feet. It is designed to fit standard sliding and casement windows, making it an excellent choice for apartments, bedrooms, living rooms, home offices, and attics.

This air conditioner offers three functions in one compact unit – powerful cooling, dehumidification up to 1.1 pints per hour, and fan circulation. It also features on-board electronic controls, three fan speeds, and an energy-saving mode, allowing users to control their comfort levels easily.

The 4-way air direction control allows users to direct the air where they need it most for optimal comfort. The unit's filter keeps the air free of dust, debris, and contaminants, providing clean and fresh air. The air conditioner also features a check filter alert, which reminds users when it's time to clean the filter and keep the unit running at its highest level.

Keystone's slider/casement window air conditioners are designed with a removable chassis, allowing users to install them either in a window or through an exterior wall. An adjustable window kit is included for easy installation. The minimum window height required for installation is 21.3 inches, and the minimum to maximum window width is 15.5 to 16.3 inches.

This air conditioner is rated 8,000 BTUs based on the ASHRAE standard and 5,000 BTUs based on the DOE standard. It is best used in a room up to 450 square feet, providing convenient cooling and dehumidifying for small to medium-sized spaces.

In summary, the Keystone 8,000 BTU Slider Casement Window-Wall Air Conditioner and Dehumidifier is a convenient and reliable cooling option for small to medium-sized rooms. It offers three functions in one compact unit, including powerful cooling, dehumidification, and fan circulation. The 4-way air direction control and clean filter alert provide optimal comfort and clean air. The easy-to-use installation process makes it an excellent choice for anyone looking for a simple and effective cooling solution.

7. Soleus Air Sliding Window Kit For Soleus Over The Sill (Saddle) Ac (Ac Not Included) With Reinforced Aluminum.

The Soleus Air Sliding Window Kit is the perfect solution for those who want to enjoy the benefits of a hybrid air conditioner while maintaining a clear view outside. This product is exclusively designed to work with all Soleus Air Exclusive Hybrid “Saddle” Air Conditioners, making it a perfect fit for most horizontal gliding window sizes.

Made from reinforced aluminum, this adjustable window seal kit can be customized to fit most horizontal sliding windows, both single and double hung. The kit can fit windows with a minimum height of 28.5 inches and a maximum height of 48 inches, making it suitable for a wide range of window sizes. The aluminum frame can be easily locked in place with the tightening of four screws, ensuring a secure and stable installation.

The Soleus Air Sliding Window Kit is incredibly easy to install, without the need for any drilling or difficult installation processes. All that is required is to measure the height of the window with the Hybrid AC installed, attach the two panels with the four screws to the desired height, install the foam insulation around all four edges, place the panels in the window, and enjoy the view outside. The kit comes with everything needed for immediate installation, with no extra tools or equipment required.

One of the unique features of this window kit is that it allows you to maintain the view outside while still enjoying the natural light through the high-quality plexiglass. This means that you don't have to sacrifice your view for the sake of an efficient air conditioning unit. The window kit also includes high-quality insulation that wraps around the full window kit for a tight seal, enhancing its energy efficiency.

In conclusion, the Soleus Air Sliding Window Kit is an excellent choice for those who want a hassle-free and energy-efficient way to install a hybrid air conditioner. Its adjustable size, easy installation process, and the ability to maintain a clear view make it a great investment for any homeowner looking to beat the heat while keeping their energy bills low.

8. Midea 8,000 Btu Smart Inverter Window Ac – Cools 350 Sq. Ft., Ultra Quiet, Alexa/google Compatible, 35% Energy Savings, Remote Control, Open Window Flexibility.

The Midea 8,000 BTU U-Shaped Smart Inverter Window Air Conditioner is a state-of-the-art cooling unit that is designed to offer superior performance, energy efficiency, and convenience. This air conditioner is ideal for cooling rooms up to 350 square feet, making it perfect for use in small apartments, bedrooms, and offices.

One of the standout features of the Midea U Smart Inverter AC unit is its ultra-quiet operation. With a U-shape design that blocks noise outside and a high-efficiency inverter system, this air conditioner is nine times quieter than traditional units, operating at a noise level as low as 42 dBA. This makes it an excellent choice for those who value peace and quiet in their living spaces, as well as those who need a restful night's sleep.

In addition to its quiet operation, the Midea U Smart Inverter Air Conditioner is also incredibly energy-efficient. With advanced DC inverter technology, this unit achieves over 35% energy savings compared to other traditional units, making it the first window AC to obtain the ENERGY STAR Most Efficient 2022 Certification. This means that users can enjoy significant energy savings while still enjoying optimal cooling performance.

The Midea U-shaped design also offers unparalleled flexibility and convenience. Its unique design allows your window to open, bringing fresh air into your home anytime and allowing you to maintain more of your view even when the unit is installed. The Anti-Theft Mechanism locks the closed window for added security.

Moreover, the Midea U Smart Inverter Air Conditioner is Wi-Fi enabled and can be controlled from anywhere through the cloud using the MideaAir app on iOS or Android. Users can also use voice commands throughout their house, office, or apartment using Alexa or Google Assistant. This makes it incredibly easy to control the temperature of your living spaces, even when you're away from home.

Finally, the Midea U Smart Inverter Air Conditioner is incredibly easy to install. Users can simply install the included quick-snap bracket, set the unit on the bracket, and secure the sidearms. It is available for single-hung or double-hung windows with size: 22"-36", minimal height at 13.75".

In summary, the Midea 8,000 BTU U-Shaped Smart Inverter Window Air Conditioner is an excellent choice for those who value quiet operation, energy efficiency, and convenience. With its advanced features and user-friendly design, this air conditioner is sure to keep your living spaces cool and comfortable all year round.

9. Tosot 10,000 Btu Portable Ac With Dehumidifier, Remote, And Easy Install Kit – Cools Up To 400 Sq Ft.

The TOSOT 10,000 BTU(ASHRAE) 6,000 BTU (DOE) Portable Air Conditioner is a powerful and versatile cooling solution that can cool spaces up to 400 square feet. It is perfect for use in home offices, bedrooms, or living rooms.

This product is not only a portable air conditioner but also a fan and dehumidifier. It is capable of removing 2.5 pints(1.2L/hour) of water per hour, making the air drier and cooler. This allows the air conditioner to work more efficiently and effectively.

For those who value a good night's sleep, the TOSOT Portable Air Conditioner can be operated in lower noise mode. Additionally, the sleep function allows users to adjust the optimal sleeping temperature, while the night mode can shut off all lights on the control panel.

Installation is a breeze with this unit. Both horizontal and vertical sliding windows can be used to install the machine, and detailed instructions in the user manual can have users set up in 15 minutes or less.

The TOSOT Portable Air Conditioner also features new X-Fan technology. When activated, the X-Fan will keep the fan spinning at a slow, silent speed to dry residual water in the machine and the air exhaust hose. This ensures that the unit stays clean and hygienic, while also prolonging its lifespan.

Safety is of utmost importance when it comes to cooling appliances, and TOSOT takes this seriously. The Portable Air Conditioner is UL-certified, meaning it adheres to strict and comprehensive certification requirements and testing. This ensures that the unit is safe to use in any home.

In conclusion, the TOSOT 10,000 BTU(ASHRAE) 6,000 BTU (DOE) Portable Air Conditioner is a powerful and versatile cooling solution that offers excellent value for money. Its ability to function as a fan and dehumidifier makes it a great all-round appliance, while its ease of installation and quiet operation make it a great addition to any home.

10. Whynter Arc-14s Portable Ac Unit – 14,000 Btu, Dual Hose, Dehumidifier, Fan, Activated Carbon Filter, Storage Bag, For Rooms Up To 500 Sqft, Platinum/black.

The Whynter ARC-14S 14,000 BTU Dual Hose Portable Air Conditioner with Dehumidifier and Fan for Rooms Up to 500 Square Feet is an ideal solution for keeping your room cool while aligning with better environmental standards and helping reduce energy consumption. This portable air conditioner is perfect for multipurpose use, with a cooling range of 500 square feet and three operational modes: air conditioner, fan, or dehumidifier.

One of the key features of this portable AC unit is its auto-drain technology, which recycles moisture collected during the cooling process to produce cool air. With a dehumidifying capacity of 71 pints per day, this dual-hose portable AC unit is capable of keeping your room comfortable, no matter what the weather is like outside.

This Energy Star Rated 14,000 BTU portable air conditioner is not only powerful and efficient, but also quiet, with noise being kept to under 56 dBA. It features CFC-free Green R-32 refrigerant and lead-free RoHS-compliant components, making it environmentally friendly.

The Whynter ARC-14S 14,000 BTU Dual Hose Portable Air Conditioner comes with a protective cover, window kit, remote control, activated carbon air filter, and washable pre-filter, as well as a user manual. The exhaust hose extends up to 60 inches, and the window kit measures 6.5 inches W by 20-46 inches L.

In summary, the Whynter ARC-14S 14,000 BTU Dual Hose Portable Air Conditioner with Dehumidifier and Fan for Rooms Up to 500 Square Feet is a versatile and efficient solution for keeping your room cool and comfortable. Its auto-drain technology and environmentally friendly components make it a great choice for those looking to reduce their energy consumption and environmental impact.

Best Ac Unit For Horizontal Sliding Window FAQs

Are there any portable AC units that work well in horizontal sliding windows?

Yes, there are portable AC units that work well in horizontal sliding windows. These units are designed to fit into the window opening and come with an adjustable panel kit that can be customized to fit the window size. Some popular models that work well in horizontal sliding windows include the Frigidaire FGPC1244T1, the LG LP0817WSR, and the Whynter ARC-122DS Elite. It is important to measure the window opening before purchasing a portable AC unit to ensure a proper fit. Additionally, it is recommended to use a support bracket or window sealing kit to keep the unit secure and prevent air leaks. Regular maintenance, such as cleaning the air filter and draining the water tank, can also help keep the unit functioning properly.

How do I properly install an AC unit in a horizontal sliding window?

To properly install an AC unit in a horizontal sliding window, follow these steps:

1. Measure the dimensions of the window and the AC unit to ensure a proper fit.

2. Clean the window and sill to ensure a secure installation.

3. Attach the mounting brackets to the AC unit and place it into the window opening.

4. Extend the side panels to fill any gaps between the unit and the window frame.

5. Secure the unit in place using screws or adhesive strips.

6. Install the drainage hose to allow for proper water drainage.

7. Plug in the unit and turn it on to test for proper operation.

It's important to read the manufacturer's instructions carefully and follow all safety precautions when installing an AC unit. If you're unsure about any steps, consult with a professional or contact the manufacturer for assistance.

What are some of the most energy-efficient AC units for horizontal sliding windows?

When it comes to energy-efficient AC units for horizontal sliding windows, there are several options available in the market. One of the most popular options is the window-mounted air conditioner, which is designed to fit into horizontal sliding windows. These units are energy-efficient as they cool only the room they are installed in and don't require ductwork or any other infrastructure. Other options include portable air conditioners and mini-split systems. Portable AC units are easy to move around and can be placed in any room as needed. Mini-split systems are highly efficient and can be customized to fit the specific needs of your home. They consist of an outdoor unit and one or more indoor units that can be installed in different rooms. When choosing an energy-efficient AC unit, look for the Energy Star label, which indicates that the unit meets strict energy efficiency guidelines set by the US Environmental Protection Agency.

What are the best AC units for horizontal sliding windows?

The best AC units for horizontal sliding windows are those that are compact, easy to install, and provide efficient cooling. One popular option is the Frigidaire FFRA0511R1E window-mounted air conditioner, which is designed for windows between 23 and 36 inches wide. It features a 5,000 BTU cooling capacity and a compact design that allows it to fit easily into smaller windows. Another option is the LG LW6017R, which is slightly more powerful with a 6,000 BTU cooling capacity and can also be used for vertical windows. It features a 24-hour programmable timer, three cooling speeds, and three fan speeds. Other notable options include the Haier ESAQ406T, the Friedrich Chill CP06G10B, and the Keystone KSTAW05B. When choosing an AC unit for a horizontal sliding window, it's important to consider the size of the window, the cooling capacity needed, and the features that are most important.

What features should I look for in an AC unit for a horizontal sliding window?

When looking for an AC unit for a horizontal sliding window, there are a few important features to consider. Firstly, the size of the unit should match the size of your window. Secondly, the unit should have a horizontal airflow direction to match the orientation of the window. Thirdly, ensure that the unit has a good energy efficiency rating to save on electricity costs. Fourthly, look for a unit with adjustable fan speeds and temperature controls for personalized comfort. Lastly, consider the noise level of the unit, as some models can be quite loud. Overall, choosing the right AC unit for a horizontal sliding window involves finding a unit that fits the window, has the right airflow direction, is energy efficient, has adjustable settings, and is relatively quiet.

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