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6 Best Rated Vertical Window Air Conditioners to Cool a Room Quickly

T he air conditioner can be put on the list of mandatory appliances that you most likely find in the majority of homes worldwide. The perfect ally in fighting torrid days, it can easily lower the inside temperatures and bring you the ideal level of comfort.

It is because of the product’s efficiency in temperature adjustment that manufacturers have come to produce so many different types and models, ensuring that everyone finds an AC unit for their needs, no matter what these are. In this article, we cover the vertical window air conditioners, reviewing and ranking the best models out there to help those who are interested in this specific setup find the right product more easily.

Vertical window-mounted ACs are more of a rarity as opposed to their traditional counterparts since these units are specifically intended to be installed for windows that open horizontally rather than vertically due to their tall rather than wide design. These units are generally reasonably priced and fairly easy to install. Unlike through-the-wall ACs, their installation is not necessarily permanent since you can take them out for safe storage during winter when you don’t need their cooling capabilities anymore. But let’s not waste more time on generalities and see what this market has to offer.

If you want to chill compact rooms, check out our choice of the smallest window air conditioners that can be successfully installed in tight places.

Top 6 Vertical Window Air Conditioners Compared

Photo Product Name BTUs Area Coverage Fan Speeds Modes Features Warranty Price
Keystone KSTSW10AImage
Best Overall
1. Keystone KSTSW10A 10,000 450 sq. ft. 3 and Auto Auto, Cool, Dry, Fan Check Filter Indicator, Timer, Sleep, Energy Saver, Airflow Direction Control, Remote Control with Follow Me Thermostat Technology 1 year Check Price at Amazon
Frigidaire FFRS1022R1 Image 2. Frigidaire FFRS1022R1 10,000 450 sq. ft. 3 and Auto Cool, Energy Saver, Fan Only Sleep Mode, Timer, Automatic Shut-Off, Multi-Directional Air Control, Filter Reset 1 year Check Price at Amazon
PerfectAire 3PASC10000 Image
Editor’s Choice
3. PerfectAire 3PASC10000 10,000 450 sq. ft. 3 and Auto Auto, Cool, Dry, Fan Airflow Direction Control, Remote Control with Follow Me Thermostat Technology, Sleep Mode, Energy Saver, Automatic Restart, Check Filter Indicator 1 year Check Price at Amazon
Global Industrial 10,000 BTU Image
Best for Allergies
4. Global Industrial 10,000 BTU 10,000 450 sq. ft. 3 and Auto Auto, Cool, Dry, Fan Energy Saver, Sleep Mode, Timer, Check Filter, Automatic Restart, Remote Control with Follow Me Thermostat Technology 1 year for parts and labor, 5 years for the sealed system Check Price at Amazon
Frigidaire FFRS0822S1 Image
Best for the Money
5. Frigidaire FFRS0822S1 8,000 350 sq. ft. 3 and Auto Cool, Energy Saver, Fan Only Timer, Filter Reset, Sleep 1 year Check Price at Amazon
Koldfront CAC8000W Image 6. Koldfront CAC8000W 8,000 300-350 sq. ft. 3 and Auto Cool, Energy Saver, Fan Only, Dry Timer, Sleep, Filter Check, Auto Restart 2 years Check Price at Amazon

Want to explore other options to see what fits your home or office setup the best? Then check out the best-rated casement window air conditioners before you make up your mind.

1. Keystone KSTSW10A

Check Price at Amazon


Specifications
  • Dimensions: 23.5” x 20.87” x 14.57”
  • BTUs: 10,000
  • Area Coverage: 450 sq. ft.
  • Fan Speeds: 3 + Auto
  • Dehumidifier Function:
  • Moisture Removal: 2.3 pints per hour
  • Timer:
  • Sleep Mode:
  • Energy Saver:
  • Energy Efficiency Ratio: 10.4
  • Air Filter:
  • Check Filter Indicator:
  • Noise Level: N/A
  • Warranty: 1 year


Want a window AC but you don’t have traditional double-hung windows in the room but rather horizontal slider or casement windows? Then this Keystone model is your definite go-to since it is the most reliable option in the long run due to its qualitative build. Moreover, it fares well when confronted with cooling large spaces since it is rated to handle areas of 450 square feet tops. What makes it so effective is the 10,000 BTUs cooling power, ensuring it won’t have problems dealing with torrid weather.

Settings & Features

First off, we must mention that there are 3 typical speed settings – low, medium, and high, and that it features a neat extra, namely the Auto speed. The complexity of this product when it comes to settings customization doesn’t end here since it features multiple operating modes that you can pick from too, namely:

  • Auto – the unit automatically adjusts its operating settings to keep the temperature in the room at your preferred comfort level without you having to switch between speeds manually.
  • Cool – The standard AC operating mode in which it cools the room, trying to bring the temperature indoors at your preferred level.
  • Dry – When used exclusively in this mode, the unit wicks moisture from the air to reduce humidity. High humidity is typical for the warmer months of the year, so try to alternate between the Cool and Dry modes to uphold as pleasant of an ambiance indoors as possible. You can rely on the Keystone to retain approximately 2.3 pints of moisture per hour from the air, enough to eliminate the need for a specialized dehumidifier in the room you set the AC up in.
  • Fan – In this mode, the unit strictly circulates the air in the room, producing a cooling breeze in the process.

Likely the most interesting feature is the 4-way air direction control since it lets you pick where the air should be directed. So, if you prefer to sit in a certain spot, you can direct the unit to expel the air in that direction rather than wait around for the ambiance in the whole room to be brought to a pleasant level. Since it integrates the Energy Saver mode, it can conserve energy while it runs so that it impacts the environment and your energy bills less.

There is another mode that we must highlight, namely the Sleep mode. When used in this operating variant, the unit gradually increases the temperature and runs at a lower fan speed so that your sleep won’t be interrupted by the AC’s operation.

The air filter is washable, which is a plus considering that routine maintenance work on the unit won’t end up costing you a cent. Speaking of, the purpose of this filter is to trap dust and other airborne particles to prevent them from entering the AC and potentially producing damage to the unit’s internal parts.

Mention-Worthy Details
  • Measures 23.5 inches by 20.87 inches by 14.57 inches – suited for windows that measure from 15.5 to 16.3 inches in width and at least 21.3 inches in height.
  • You can opt for wall installation too if you want to, you just have to separately acquire a compatible wall sleeve and this vertical AC turns into a through-the-wall AC.

    Does this different setup sound like a better idea for you? Then check out the best through the wall air conditioners that can be fitted at any height point on the wall.

  • You can select the temperature that the AC should help reach and uphold from 62 to 86 degrees Fahrenheit.
  • Touch button control panel makes using this unit a breeze even for first-time AC owners.
  • Remote control with Follow Me thermostat technology included with the purchase. Aside from letting you change the settings as you prefer without moving an inch from your current location in the room, this remote has the added benefit of working as a portable thermostat.

Lastly, we mention that the manufacturing company, Keystone, backs this product against defects for 1 year. So if any issues related to faulty production appear, you won’t have to spend a dime on fixing them since the manufacturer covers solving the problems as long as the warranty agreement is still active.

*Make sure that you read the installation and instructions manual carefully to set the unit up and use it accordingly so that you won’t damage the product yourself. This will cause the warranty agreement to void and you won’t benefit from free repairs anymore.

PROS

  • When used in Dry mode, it eliminates 2.3 pints of moisture per hour from the air – you won’t need to run the dehumidifier in the room you install the AC anymore
  • When the Energy Saver mode is activated, the unit draws considerably less power when it runs so that you won’t overspend when the energy bills are due
  • Airflow direction control – you decide where exactly in the room the air goes for added comfort
  • When the filter needs to be cleaned, the Check filter indicator lets you know – no more guesswork regarding upkeep routines
  • Use the included remote control to adjust the settings as you like from anywhere in the room
  • Easy to install and operate – perfect for first-time AC owners

CONS


Verdict

If you have a casement or horizontal slider window, your best guess when it comes to efficient cooling is this Keystone model that not only employs 10,000 BTUs to keep the temperature at your desired comfort level, but that doesn’t consume much energy in the process either. Furthermore, it works as a dehumidifier when used in Dry mode, so it further helps cut on expenses seeing how you won’t need to separately acquire a dehumidification unit for the room where you install this AC.



2. Frigidaire FFRS1022R1

Check Price at Amazon


Specifications
  • Dimensions: 23.5” x 20.25” x 14.2”
  • BTUs: 10,000
  • Area Coverage: 450 sq. ft.
  • Fan Speeds: 3 + Auto
  • Dehumidifier Function:
  • Moisture Removal: 3.4 pints per hour
  • Timer:
  • Sleep Mode:
  • Energy Saver:
  • Energy Efficiency Ratio: 10.4
  • Air Filter:
  • Check Filter Indicator:
  • Noise Level: 56 dB
  • Warranty: 1 year


Specially made for casement or sliding windows, this is your go-to choice if you want a compact but powerful AC that you can mount and set up yourself. It measures 23.5 inches by 20.25 inches by 14.2 inches, and you can install it for windows that measure from 15.5 to 40 inches in width and 21.5 to 36 inches in height (filler panels are included in the package). Additionally, Frigidaire covers it for 1 year on parts and labor, this warranty ensuring that the product is handled free of charge if manufacturing issues arise within this period.

It outputs 10,000 BTUs, being ideal if you want to cool a room up to 450 square feet in size. Besides the classic cooling capabilities it provides, it can dehumidify too (rated to wick 3.4 pints of moisture per hour). It features a front-mounted mesh washable filter that captures dust and other impurities lingering in the air. When the filter is dirty, the indicator light on the control panel afferent to it turns on to let you know that cleaning is due.

The 4-way air direction control allows optimal circulation to amp the efficiency of the cooling unit. There are 3 speed levels that you can pick from, and an Auto mode – this permits full customization of the AC’s operation. The Sleep mode is a big highlight of this product seeing how it gradually increases the temperature a few degrees over the evening automatically, keeping proper sleep conditions and saving energy in the process.

The 24-hour On/Off timer really comes in handy since it lets you schedule the unit’s operation to benefit from that comfy ambiance it produces indoors when you need it most. The timer can be set in 30-minute increments and it is a real energy saver as well. There’s even a specialized Energy Saver mode that, when activated, ensures the unit draws as little power as possible to uphold thermal comfort indoors.

*Considering that its energy efficiency ratio is 10.4, you can safely leave it on as much as you need to tone down the temperature indoors when it goes haywire without worrying about costs. The cost varies depending on the conditions in your area and how much you run the unit, but on average you shouldn’t spend more than $87 per year for thermal comfort using this AC.

After a power outage, this Frigidaire picks up from where it left off due to the automatic restart feature it integrates. The electronic controls make it easy to set the comfort level to your preference even if you’ve never dealt with a product of this kind before. Furthermore, a full-function remote is included that lets you control the temperature and fan speed from across the room for added convenience.

This Frigidaire model might be a top performer in terms of cooling, but quietness isn’t its strong point. If you seek a silent system, we recommend that you look into these quiet air conditioners since they are designed to produce as little noise as possible when cooling.


PROS

  • You can set the 24-hour timer in 30-minute increments to customize the unit’s operation and reduce running costs
  • Automatically restarts with the pre-selected settings when the power comes back after an outage
  • Sleep mode gradually increases the temperature a few degrees as the hours pass, maintaining a comfortable living space and saving energy in the process
  • The washable filter saves you money since it doesn’t need replacement but rather only routine cleaning, and it traps dust to keep it from affecting the AC’s efficiency
  • Energy efficiency ratio of only 10.4 – doesn’t cost much to keep the AC running as long as you need it to each day

CONS

  • Makes a bit too much noise on the high speed setting
  • Some users complained about difficulties when installing the unit because of its atypical size


Verdict

A unit that you have full control over since all of the settings are customizable (timer, temperature, and running mode), this Frigidaire model is an energy-efficient option that you can count on to effectively reduce the temperature indoors and create a truly habitable space even during the most torrid days.



3. PerfectAire 3PASC10000

Check Price at Amazon


Specifications
  • Dimensions: 23.5” x 14.75” x 21”
  • BTUs: 10,000
  • Area Coverage: 450 sq. ft.
  • Fan Speeds: 3 + Auto
  • Dehumidifier Function:
  • Moisture Removal: 55.7 pints per day
  • Timer:
  • Sleep Mode:
  • Energy Saver:
  • Energy Efficiency Ratio: 10.4
  • Air Filter:
  • Check Filter Indicator:
  • Noise Level: 56 dB
  • Warranty: 1 year


Measuring 14.75 inches by 21 inches by 23.5 inches, this AC unit is intended for casement or sliding windows. It comes with an expandable window kit that suits horizontal sliding or crank-out casement windows measuring 15-1/2 to 16-1/4 inches in width and 21-1/4 to 39-1/2 inches in height.

Since the filter it uses to trap impurities and keep them from affecting internal components is front-mounted, you will have easy access to it when cleaning is due. Speaking of, this routine maintenance chore is signaled by the check filter indicator, so you know with certainty when cleaning is due because the AC shows it in a straightforward manner.

With a 10,000 BTU cooling capacity, it comes as no surprise that this model is recommended for spaces of up to 450 square feet in size. The selectable span for the AC’s temperature setting ranges from 62 to 86 degrees Fahrenheit. Thus, you can create the ambiance you feel most comfortable with at the touch of a button.

The full-range air direction control ensures the area in the room you want prioritized when it comes to cooling will receive the attention you desire. Another mention-worthy feature is the timer that lets you set the unit to turn on or off up to 24 hours in advance. This not only gives you a higher degree of control over its operation, allowing you to program the unit to work when you need it most (find the living room already pleasant to sit in when you get home from work, for example) but it also helps reduce running costs.

Like any top-of-the-line AC, it integrates multiple operating modes, so you can use it for more than simply cooling the room – it works as a dehumidifier (it can withdraw up to 55.7 pints of moisture every 24 hours), and a fan (there are 3 speed settings to pick from, and it circulates the air in the room just as effectively as a specialized fan would).

Needless to say, the fact that it produces only 56 dB when it runs on the lowest setting is another highlight since you can sleep in the same room with the unit when it runs, and it won’t distract from your nocturnal slumber. The control panel is as simplistic as they get, ensuring that ever first-time users won’t have trouble figuring what each button stands for.

A remote control with the useful Follow Me portable thermostat function is included for added convenience when it comes to adjusting the settings. Lastly, we mention that the company covers it against defects for a period of 1 year after you make the acquisition, so potential manufacturing issues are covered free of charge within this period.

Would you rather opt for a portable unit that is easier to move from room to room and keep the whole home at a perfect temperature during summer? Then check out these dual hose portable air conditioners that you can relocate with ease.


PROS

  • The 24-hour timer lets you program when the unit should turn on or off beforehand
  • The 4-way air directional louvers let you pick the airflow direction
  • Rated at 10,000 BTUs cooling – perfect for areas of up to 450 square feet
  • When used in Dry mode, it can eliminate up to 55.7 pints of moisture per day
  • Full function remote control with Follow Me technology included in the package

CONS

  • Some users complained about having difficulties when mounting it
  • The range of the remote could use improvement


Verdict

Giving you total control over its operation thanks to the thermostat-like remote and adjustable settings, the Perfect Aire is an option worth considering for spaces of up to 450 sq. ft. in size. It includes everything you need to set it up, and the procedure is as simplistic as it gets. Moreover, it doesn’t make much noise when it runs, so it won’t distract you during nap hours.



4. Global Industrial 10,000 BTU

Check Price at Amazon


Specifications
  • Dimensions: 23.5” x 20-7/8” x 14.5”
  • BTUs: 10,000
  • Area Coverage: 450 sq. ft.
  • Fan Speeds: 3 + Auto
  • Dehumidifier Function:
  • Moisture Removal: 2.3 pints per hour
  • Timer:
  • Sleep Mode:
  • Energy Saver:
  • Energy Efficiency Ratio: 10.4
  • Air Filter:
  • Check Filter Indicator:
  • Noise Level: 59 dB
  • Warranty: 1 year for parts and labor, 5 years for the sealed system


Another highly efficient window-mounting vertical AC is this model produced by Global Industrial. The 10,000 BTUs of cooling power make it appropriate for use in spaces measuring up to 450 square feet, so it’s one of the heavy-duty entries available. It measures 23.5 inches by 20-7/8 inches by 14.5 inches – the window size compatibility for this product spans from 15.5 to 16.4 inches in width and 23 to 39-7/16 inches in height. The complete mounting kit is included with the package, implying that there are no extra costs for the setup process.

It might not be an Energy Star rated unit, but it flaunts a 10.4 energy efficiency, so you can rest assured knowing that it won’t consume a lot of power when it runs. The power draw of this unit can be further limited by simply turning on the Energy Saver mode, an option that is present with most top-of-the-line ACs. Another energy-saving feature is the Sleep mode that is perfect during the night since the unit automatically increases the temperature to create comfortable sleeping conditions without drawing much power in the process.

You can set the fan to one of three different operating speeds – on the top speed, it is rated at 550 CFM, one the medium level, 500 CFM, while on the lowest setting, it is rated at 450 CFM. As for the operating modes of this unit, these include – Auto, Fan Only, Cool, and Dry. When you set it to Dry mode, it acts as a dehumidifier and removes up to 2.3 pints of humidity per hour. This will come in handy during summer when moisture levels, as well as temperature levels, grow exponentially and have an adverse effect on comfort.

The average noise level it produces while it operates is 59 dB, so you might want to set it to the lowest speed while you sleep to make sure it won’t pose a distraction and ruin your nocturnal slumber. Upon the power returning after an outage, it automatically restarts with the settings you have previously selected so that there’s no long-term interruption in its operation and you won’t have to manually restart it either.

This 10,000 BTU model features a 24-hour on/off timer that gives you full control over its operating schedule. This feature also lets you limit energy use and reduce it since you won’t leave the AC on for longer than it’s needed. The dust and impurity trapping filter it integrates is washable, a plus on its own since you won’t spend money on routine upkeep in the long-term.

A remote control with the Follow Me portable thermostat function is included, giving you straightforward and quick information regarding the temperature and providing an easier manner to change settings as needed. Furthermore, the product is covered by a 1-year warranty for parts and labor, while the sealed system is warranted for 5 years.

PROS

  • Very efficient as a dehumidifier – eliminates 2.3 pints of moisture from the air
  • Automatic restart function ensures the unit picks up its operation from where it left off
  • Thermostat function remote control included for added convenience when operating the AC
  • Backed by a 1-year warranty on parts and labor, and 5 years for the sealed system

CONS

  • It’s not the quietest option
  • The timer is not very accurate


Verdict

Aside from being packed with energy saving features that make a difference when it comes to operating costs, this 10,000 BTU AC provides sufficient cooling to suit installation in a space of up to 450 sq. ft. Reliable and efficient, it is an option worth considering if you want to enjoy thermal comfort even during the hottest summer day.



5. Frigidaire FFRS0822S1

Check Price at Amazon


Specifications
  • Dimensions: 20.25” x 14.2” x 23.5”
  • BTUs: 8,000
  • Area Coverage: 350 sq. ft.
  • Fan Speeds: 3 + Auto
  • Dehumidifier Function:
  • Moisture Removal: 3 pints per hour
  • Timer:
  • Sleep Mode:
  • Energy Saver:
  • Energy Efficiency Ratio: 10.8
  • Air Filter:
  • Check Filter Indicator:
  • Noise Level: 48.4 dB
  • Warranty: 1 year


Measuring 20.25 inches by 14.2 inches by 23.5 inches, it is recommended to be mounted on casement or sliding windows, and not with standard ones. If you prefer having it placed through a wall, you have to make sure the wall is not thicker than 8.5 inches for a successful installation. As it offers 8,000 BTUs cooling power, you can rest assured knowing that it handles cooling rooms of up to 350 square feet without any trouble.

It integrates an air cleaning filter that is washable and reusable, and that not only protects the internal parts of the AC from damage caused by dust, but that clears airborne particles a bit, making the air in the room safer to breathe. The filter easily slides out from the grid on the front and you can simply give it a rinse under a stream of water to clean it. To guarantee the filter will operate within normal parameters, you must make sure that it is cleaned when needed, and for this, you can check the indicator light that shows exactly when filter maintenance is due.

You are provided with total command on its operation even from a distance using the remote, and you can control the airflow intensity and direction as you like since there are multiple operating speeds to pick from and the unit features 4-way air control. For added convenience in use and to help reduce running costs, it features a Sleep mode for night use, the Energy Saver mode, as well as a programmable timer (can be set for up to 24 hours in advance). Furthermore, the manufacturer offers a 1-year warranty on parts and labor after you purchase it.

PROS

  • Perfect for spaces of up to 350 sq. ft. – 8,000 BTUs cooling capacity
  • Set the timer to turn the unit on or off with up to 24 hours in advance
  • Among the quietest models available – makes only 48.4 dB when it runs
  • Washable and reusable air filter – saves money on upkeep
  • Comes at a more affordable price as opposed to other top-of-the-line models

CONS

  • Some users complained that the fan doesn’t blow as hard as they expected
  • Installation instructions are a bit hard to follow


Verdict

Among the quietest models available, this Frigidaire is an option worth considering if the space you install it in doesn’t exceed 350 sq. ft. in size. It doesn’t draw much power when it runs and integrates all of the features and functions people have come to expect from modern AC units, so it’s worth every cent.



6. Koldfront CAC8000W

Check Price at Amazon


Specifications
  • Dimensions: 20.88” x 14.5” x 23.5”
  • BTUs: 8,000
  • Area Coverage: 350 sq. ft.
  • Fan Speeds: 3 + Auto
  • Dehumidifier Function:
  • Moisture Removal: 50.6 pints per day
  • Temperature Settings: 61°F – 86°F
  • Timer:
  • Sleep Mode:
  • Energy Saver:
  • Energy Efficiency Ratio: 11
  • Air Filter:
  • Check Filter Indicator:
  • Noise Level: 49 dB
  • Warranty: 2 years


A powerful AC unit is a must if you want to feel comfortable indoors even on the hottest days, and this Koldfront model is an option worth considering since it is rated at 8,000 BTUs cooling power, which makes it more than appropriate for spaces of up to 350 square feet. You can set it up for any casement window that slides open sideways or swings out to one side that measures from 15.5 to 16.25 inches in width and has a minimum height of 20.3125 inches since it measures 20.88 inches by 14.5 inches by 23.5 inches.

It manages to remain a cost-friendly appliance thanks to a series of smart operating modes, starting with the Sleep mode that increases the temperature progressively before turning down to save power. Next, you will find the Energy Saver mode that turns the fan on for 2 minutes at 10-minute intervals until the ambient temperature reaches your desired threshold and the timer that lets you set the working schedule of the unit as you see fit.

The package includes a remote control with a vast range of 16 feet that allows you to change the settings as you like without having to move from the couch. Aside from chilling the air, it reduces the humidity level (can remove up to 50.6 pints of moisture per day), circulates the air, and retains impurities lingering in the air indoors due to the filter that it integrates.

It produces only 49 dB when it runs, so it’s discreet enough for you to install it in the office or bedroom and mind your activities without the AC posing a distraction. You can set the temperature from 61 to 86 degrees Fahrenheit, this selectable span sufficing to ensure you will find the temperature setting you feel most comfortable with. When it comes to baking, rely on Koldfront to fix the unit if manufacturing issues appearing for the first 2 years after you make the acquisition.

PROS

  • Removes up to 50.6 pints of moisture per day when used in Dry mode – enough to replace a standalone dehumidifier
  • Lets you set the temperature from 61 to 86 degrees Fahrenheit
  • The included remote has a 16-foot range – change the settings without getting off of the couch
  • Among the quietest entries available – produces only 49 dB when it runs
  • Backed against defects by the manufacturer for 2 years

CONS

  • Poor installation instructions can make it a bit hard to set the unit up
  • The amount of insulating foam included does not suffice for installation


Verdict

Suited for spaces of up to 350 square feet, this AC unit is a must-have if you seek a value deal. It is backed by a 2-year warranty and built to last, so you needn’t worry that it might not live up to expectations in the long-run. Add to these aspects the fact that it comes with all of the standard features an AC could flaunt, and you can see why we recommend it.



Reasons to Use a Window AC


When the heatwave strikes, you want to rapidly find a way to reestablish thermal comfort indoors, and the best solution that comes to people’s minds from this point of view is to turn on the AC. Instead of opting for central air cooling that will run up the energy bills since even spaces and rooms that you don’t use are cooled, it’s best to focus the air cooling efforts only in the areas that you actually use. The window AC unit is the ultimate form of supplemental heating, and if you aren’t yet convinced of how efficient and useful this solution is yet, maybe a quick breakdown of its benefits will help:

  • Cost-efficient – First off, window-mounted units don’t cost a fortune, so the initial investment isn’t that overburdening as it is with central units that can run in the thousands of dollars. There’s the fact that these units are focused on cooling only the space in which you install them, so you can cut on costs by setting up the AC in the room you use the most, like the bedroom or living room, the place where you need to create comfortable conditions the most.
  • Good for year-round use – There are plenty of ACs that are good for use throughout the whole year since they can provide both cooling and heating. If you find yourself buying a unit of this kind, you will save serious money since you will have an extra means to heat up your home when the cold weather turns around.
  • Relocation isn’t impossible – While a window unit might not be as easy to relocate as a portable model, it’s not impossible to do this with it either. You can reinstall the unit in any other room or even venue as long as there’s a compatible window there for the setup process. Moreover, when winter comes, you can even take the AC out and put it in storage if you want to.
  • Doesn’t take up floor space – Evidently, as the name implies, the AC installs in the window, so there’s no floor space that it takes up. This is an advantage on its own seeing how you could put that space to better use for other appliances and furniture pieces. There are fewer risks for those who have kids or pets too since they won’t be able to access the control panel of the AC that easily.
  • Installation isn’t difficult – The process differs slightly depending on the exact model at hand, but in the end, it’s not a difficult procedure in the slightest. So, you will save money on professional installation that would otherwise be necessary with other air cooling systems (central units, for example).

How to Install a Vertical Window AC


Window ACs are not only budget-friendly, in most cases, but they also help you achieve a thermic comfort, which, otherwise, you might not be able to reach, especially on hot summer days. Depending on where you wish to mount your unit, you have to take into account the size of the room and for how long you’re planning on using it every day. Installing it on your own might sound a bit difficult to do, especially if you haven’t tackled such a task before. However, if you follow certain steps and have the right tools, it is not that hard.

  • Step 1. Measurements – Make sure you take all the necessary measurements beforehand. If you’ve picked the right amount of BTUs for your room, now you have to make sure your window is large enough for the AC. Most units come with additional, adaptable panels, to help you better fit it to your window.
  • Step 2. Check your window frame – Before you install the AC, make sure your window frames are in good state. Deteriorated frames might affect the appliance, in the long run, so make sure to take care of them first.
  • Step 3. Support brackets and panels – Use the accessories it comes with. Place the brackets below the widow and screw them to secure them. Then, lift the AC and secure it onto the brackets. Adjust the panels according to your window, making sure it is a tight fit, to prevent it from moving.
  • Step 4. Weather-proof – Take a roll of weather stripping and apply it to the edges of the window. This way, as soon as you close the window, there will be an air-tight seal, which will keep the elements outside your room.
  • (Optional) Step 5. Lock – Depending on where your window is located, you might want to put a lock, to prevent others from breaking it.

A correctly installed AC unit will help you achieve the optimum temperature for your house while keeping the elements away. Check the brackets and the sealing every now and then, though, to ensure your unit is still in top shape.


Frequently Asked Questions



Do window ACs pull air from the exterior?
No, these units do not pull air from outside but rather work with the air in the room, cooling it, and getting rid of the excess heat on the exterior using an exhaust system.

Can a vertical AC be mounted on a wall?
Yes, but you will have to build a frame for it, as you won’t find matching sleeves. Add to that the caulking and repairs involved, and you will have a cumbersome chore.

How do you vent a window AC without an actual window?
In this situation, you have the option to vent it through the door, through the wall, through the ceiling, or using another vent available, like the dryer vent.

What is the average life of a window air conditioner?
In general, the lifespan is 8 to 10 years, or more, as long as it is handled correctly and proper upkeep is performed.

What happens if you don't put a window AC in the window?
An upright window AC will not function unless you place it somewhere where it will have access to the outdoor. It must be mounted in a window or another penetration in the wall so that the rear part will communicate with the exterior.

Can you mount an air conditioner in a window frame?
Not any type of AC can be mounted inside a window. It must have a mounting kit that permits sliding installation. Vertical types can be installed for casement and sliding windows.

Do window AC units include filters?
Yes, all of the models we have selected come with air filtering media, for example. The purpose of the filter is to trap dust and impurities, preventing the airborne particles from damaging the internal parts of the AC unit.

What is a vertical window AC?
It is a window-mounting air conditioning system that has a high and narrow shape. This design makes the AC the only viable option for casement and sliding window arrangements.

Can I run my window AC all day?
There shouldn’t be a problem with you having it on 24/7. Most manufacturers state that continuous operating doesn’t pose a risk and will not overheat the unit. No inside part will get too hot or melt or catch on fire if you don’t turn the AC off for so many hours.

Can I put the air conditioning unit in a sliding window?
The answer is yes, you can mount it in a sliding window since this is the specific setup for which the unit was built.



Conclusion

Having the means to chill your home is essential, especially in summer when the temperature rises. If you have a casement or sliding window that evidently requires an atypical type of AC for installation and you are more inclined to opt for a window-mounted unit rather than a portable AC or a central air system, then the options we presented here are what you should look into. Powerful, reasonably priced, and energy-efficient, these air cooling systems can handle providing pleasant habitable conditions even during the most torrid days. Before we end, let’s rewind some of your best options once more to help you make up your mind.

Best Vertical Window AC for Sale: Keystone KSTSW10A

To put it short, this model is the best yielding at the moment when it comes to vertical window-mounted ACs. It’s very powerful, boasting a 10,000 BTU cooling ability, and it can cover large spaces of up to 450 square feet. Some of the customers who have already installed one suggest that the product works for larger areas just as well. The added benefit is that it also works as a dehumidifier for the space you install it in seeing how it removes up to 2.3 pints of moisture per hour. Therefore, you won’t have to install a dedicated dehumidifier in the room where you set this AC up since it does the job just as fine. Best of all, it doesn’t require much in the way of upkeep but rather only routine cleaning of the impurity-trapping filter it is fitted with.

Editor’s Choice: PerfectAire 3PASC10000

Powerful since it packs 10,000 BTUs, it can cool down a room of up to 450 square feet, which makes it perfect for large spaces like living rooms or studies. It features the Energy Saver mode that helps reduce the utility bills, so if you want to benefit from a pleasant indoor ambiance 24/7 without spending all of your money on creating those pleasant conditions, this is the setting you ought to opt for. Another highlight that drew our attention is the 24-hour on/off timer that gives you full control over the operation of the AC. Add to these aspects the fact that it produces a hefty 323 CFM on the highest fan setting, and you can see why we favor it.

Best Vertical Window Air Conditioner for Allergies: Global Industrial 10,000 BTU

Not only will this unit dehumidify the air, thus decreasing the possibility of bacteria and airborne particles affecting your health, but it also includes an anti-microbial mesh filter. Washable, so you don’t need to worry about changing it, the filter will ensure you won’t be bothered by dust, pollen, or other allergens, making the AC especially useful if you suffer from allergies. It features a 3-speed fan and 4 ways to redirect the air, so you can decide which way the air current will head.

Best Vertical Window Air Conditioner for the Money: Frigidaire FFRS0822S1

Suited for spaces of up to 350 square feet in size due to its 8,000 BTUs cooling capacity, this Frigidaire entry is the go-to if you seek a value deal since it doesn’t disappoint when it comes to granting thermal comfort and does all this at a reasonable price compared to its competitors. The air filter it uses to trap particles and keep the internal parts safe from their potentially damaging presence is washable and reusable, so you save money on routine upkeep procedures. It even features a timer that lets you set for exactly how long the AC should run, helping cut on operating costs.

Markus Mackay
Markus Mackay
Our resident expert in all things AC-related, Markus is a never-ending source of knowledge regarding how these systems work. What makes him so savvy in this field is his direct experience that he acquired while working in sales. The connections he made during that period also came in handy here as Markus knows a lot of experts in this field. With each article uploaded, he makes sure to gather the expertise of his more experienced ex-peers as well, making sure to provide readers with reliable reviews and articles.

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