Window Air Conditioner

H ot days can become impossible to bear and when you feel like you can’t breathe, you could need a cooling device that will freshen you up. Air conditioners are popular in the hot season but they come at high prices and not everyone has enough space for one. In cases like these, a window mountable model could be your best ally in fighting the heat wave , so if you are interested in these devices, keep reading to learn more.

Top 5 Window Air Conditioners Compared

	1. Koldfront WAC18001W	2. Frigidaire FFRE1033Q1	3. Koldfront WAC12001W	4. Keystone KSTAW10B	5. Frigidaire FFRA0511R1
	Best Model	Most Energy-Efficient	Editor’s Choice
	Check Price	Check Price	Check Price	Check Price	Check Price
Specifications
Size	17.9” x 23.6” x 25.4”	21.5” x 19” x 14.5”	16.1” x 22.6” x 23”	19” x 14.6” x 21.5”	16” x 15.25” x 12”
Weight	117 lbs.	59 lbs.	88 lbs.	59.8 lbs.	47 lbs.
Display	Digital Display	LCD Display	LCD Display	LED Display
Controls	Touch Buttons	Intuitive Touchscreen	Intuitive Touchscreen	Electronic Controls	Dial Knobs
Installation Kit Included
Performance
Power	18,500 BTUs	10,000 BTUs	12,000 BTUs for cooling, 11,000 BTUs for heating	10,000 BTUs	5,000 BTUs
Coverage	1,000 sq. ft.	450 sq. ft.	550 sq. ft.	450 sq. ft.	150 sq. ft.
Energy Efficiency Ratio	10.7	11.3	10.9	11.3	11.1
Power Supply	220V	115V	220V	115V	115V
Air Deflection	4-way	8-way	4-way	4-way	2-way
Noise Level	55 dB	57 dB	55 dB	60 dB	51.3 dB
Features
Timer
Operating Modes	4	3	4	4	3
Auto Restart
Dehumidification Capacity (pints/ hour)	N/A	3	2.5	2.3	1.1
Variable Speeds	3	4	4	3	2
Thermostat
Indicator Lights
Remote Control
Air Filter
Slide-Out Chassis
Money Saver Mode
Auto Swing Louvers
Sleep Function
Warranty&Support
Parts and Labor Warranty	2 years	1 year on parts and labor, 5 years for the sealed system	2 years	1 year on parts and labor, 5 years for the sealed system	1 year on parts and labor, 5 years for the sealed system
Customer Support
User Manual

1. Koldfront WAC18001W

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Koldfront makes yet another appearance in our top of the best models, this time with the WAC18001W model. This spectacular model is among fan favorites as it delivers an impressive 18500 BTU cooling and a 16000 BTU heating, thus guaranteeing perfect living conditions throughout the year as long as you use it. It is designed to be used in spaces of up to 1000 square feet , so it will effectively handle a large area.

The 4-way air directional louvers that it features provide complete coverage of the room that it is placed in, cooling you off or warming you up in no time regardless of where you are sitting in the room. It requires a minimum window height of 19.5 inches and a minimum of 31 to 42 inches in width. To lower its energy consumption as much as possible, it features an energy saving mode. For your convenience, you can use the remote control that it comes with to change the unit’s settings.

There are 3 fan speeds and an automatic option that you can choose between. Another important feature is the 24-hour timer that allows you to set it to work for as long as you consider it to be necessary. In addition, this product is backed up by the manufacturer during the first two years after you purchase it.

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2. Frigidaire FFRE1033Q1

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This one is our top pick for all the right reasons. It’s a unit that can handle large rooms so it is designed to work at high rates, all this without using too much electricity. It can spread cool air in 8 different ways and it offers 3 different operating modes to choose from and 4 increasing speeds. It boasts a sleek design and is very easy to use, with the touchscreen controls, the indicator lights and the remote control that enables distance handling.

Powerful

Thanks to the sleep and economy mode, the machine minimizes the energy use for an efficient operation. It has a good energy efficiency ratio and it does not require more than 670 kWh/year even though it is a powerful unit of 10,000 BTU. Also, for more convenience, it can dehumidify the air, thus maintaining the proper humidity level in case there too much moisture.

Improved Air Quality

Aside from the air filter that prevents dust from spreading around the room , the Frigidaire FFRE1033Q1 also features an air ionizer that improves the air quality without adding any ozone. It can remove up to 3 pints of moisture from the air per hour. If the power goes off, the unit will start again when the power comes back due to the auto restart feature.

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3. Koldfront WAC12001W

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We loved this unit because it is able to deliver both cool and hot air, which means you can use it all year round. The 12,000 BTU power enables it to handle large rooms measuring up to 550 sq.ft without overburdening your electricity grid. Thanks to the low EER and the energy saving modes, the unit keeps a low energy usage and does not affect your bills.

Although it is a bulky machine, it can fit your window and blend into the design. Customize its operation as you like using either the touchscreen controls or the remote control and enjoy a draft of cool and fresh air that is being constantly filtered.

This model boasts almost any feature you might look for and it can help you maintain a temperature between 62 and 86F by spreading air in 4 different directions due to the adjustable louvers. While it does that, around 60 pints of air moisture are removed per day.

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4. Keystone KSTAW10B

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A 10,000 BTU unit that is sure to maintain a perfect temperature in the room you place it in, this Keystone entry doesn’t only provide a more than decent performance as a whole, but it comes at a reasonable price as opposed to most entries on the market. It might not deliver the widest area coverage out there as it is designed to handle spaces of up to 450 square feet, but what it lacks in this department it makes up through the fact that it can remove excess moisture from the air, lowering humidity by wicking up to 2.3 pints of moisture per hour.

It even boasts a high efficiency in terms of power consumption, delivering an impressive 11.3 energy efficiency ratio, the estimated costs of using it being as low as $80 per year. For your convenience and to promote ease of use, it features electronic controls that allow you to select any setting you desire at the simple touch of a button. Furthermore, the LED display gives it a rather modern feel, making it integrate perfectly with your home.

It is Energy Star rated and features a power saver mode that you can opt for if you want to increase its operational efficiency. Another mention-worthy feature is the 24-hour timer which enables you to customize its operation as you please. In addition, there’s even a sleep mode that you can opt for if you want to keep cool and comfortable while saving money on the utility bills.

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5. Frigidaire FFRA0511R1

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As this Frigidaire AC is the best-selling product in the window-mountable category, it comes as no surprise that it made an appearance in our top. Once you check it out closely, you will understand why it is so appreciated. First of all, it comes at a cheap price which makes it quite accessible. Furthermore, it is accompanied by a wide range of features that make it one of the most effective air conditioning devices out there.

This 5000 BTU compact AC is obviously easy to install as it requires to be mounted on the window. It can handle cooling areas of up to 150 square feet quite fast, also being capable of removing up to 1.1 pints of water from the air per day. The 2-way air direction it provides ensures even cooling of the room, while the 2 fan and cool settings allow you to customize its operation as you see fit.

As it boasts an 11.1 energy efficiency ratio, it is one of the few AC units that consumes little power to operate. As it measures only 16 inches in width, 15.25 inches in depth, and 12 inches in height, it makes for a discrete addition to any room you place it in. Best of all, it boasts a quiet operation which ensures it won’t bother you even if you place it in the bedroom and let it run overnight while you are sleeping.

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6. LG LW6017R

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If you’re looking for a versatile model, you should consider this compact window air conditioner. This unit has a capacity of 6,000 BTUs and it can cool down an area of up to 260 sq. ft. In addition to this, you will get the most for your money as it comes with 4 operating modes. You can choose between the Dry mode that will remove the excess moisture from the air up to 1.8 pints, The Energy-saver mode, Fan mode, and cool mode. It’s suitable for windows that measure from 22-inch to 36-inch in width and 13-inch to 36-inch in height.

With 6 speeds in total, 3 for the fan and 3 for cooling, you can control the temperature of the room according to your exact needs. As well as, the 2-way air control will ensure that it prevents hot spots from forming. The 24-hr programmable timer provides a cooling schedule so you make it operate exactly when you need it to. When the timer runs out, it will automatically shut-off so it doesn’t require any effort from your behalf. In the event of a power outage, it will automatically turn itself on with the previous settings.

The integrated filter will eliminate harmful contaminants found in the air so you surround yourself with fresh, cool, and clean air at all times. You don’t have to worry about investing into a new filter every few months as the filter is washable and reusable. Whenever the time comes, the indicator light will let you know.

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7. Frigidaire FFRE0833S1

This model outputs 8,000 cooling BTUs to upkeep a pleasant environment indoors when placed in a room of up to 350 square feet. Installation is quite easy even for beginners, so with a little patience and closely following the instructions provided in the manual, you can save the money you would have otherwise given to a professional to perform the procedure.

Even if it isn’t the quietest model out there, it doesn’t present too big of a nuisance either. It puts a total of 3 speed settings at your disposal and features a 24-hour on/off timer, so you can fully customize its operation and schedule as you like. Moreover, there is the added benefit that the timer helps save on running costs.

Considering that it is Energy Star certified for the low power draw it boasts, you needn’t worry that it might cost too much to let it run as long as you need it to. With the acquisition is included a full-function remote control that provides a convenient manner to program the AC from afar. Seeing how it also acts as a remote thermostat, it provides you with the added benefit of the unit reporting to the temperature in the location where you place the remote.

It is designed to fit windows that measure 14” in height and from 23” to 36” in width. As it weighs only 57 pounds, you won’t have a hard time maneuvering it when you install it. The power cord measures 6’ in length, so it is unlikely that you will need an extension cord to plug it in. Furthermore, the manufacturer backs it with a 1-year warranty on parts and labor, as well as a 5-year warranty for the sealed system.

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8. Friedrich Chill CP06G10B

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Next in line is the Friedrich Chill that can do a great job at keeping you cool all summer long. This 6,000 BTU machine can handle rooms of around 250 sq.ft. and although it has a 12.2 energy efficiency ratio, it does not add more than 400 kWh to your annual energy bill.

It comes with an included installation kit and side curtains that help it fit any window size Other design details worth mentioning are the slide-out chassis that lets you easily remove the machine for maintenance and the anti-intrusion protection that secures the chassis in place.

There are 4 operating modes to choose from , including a dehumidification and an energy saving one, and 3 fan speeds along with 3 cooling speeds so you can adjust the intensity of the cool air.

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9. Haier ESAQ406P Serenity Series

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This model has a 6,050 BTU power and is suitable for rooms of 200-250 sq.ft. One thing worth mentioning about this item is that it is so silent you won’t even know it’s on. Compared to others that create a noise level of over 55dB, this one creates no more than 43 dB on any of the 4 variable speeds.

It manages to save energy and provide an EER of 11.2 due to the E-Save mode and the sleep function. Use the timer to set an operating interval so you will save more energy by avoiding power waste when you are not at home.

It also features an air filter and indicator lights to let you know when it is time to change the filter. The dehumidification feature enables it to remove around 1.8 pints of water from the air every hour.

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10. hOmeLabs HME020003N

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As it is rated to output up to 5000 BTUs of cooling power, and designed to be used in spaces and rooms of up to 150 square feet, you can trustfully rely on it to create a pleasant ambiance indoors when summer comes and heat takes over. It is one of the more energy efficient models on the market at the moment, and the fact that it comes at an affordable price only adds to its appeal.

It features no less than 7 temperature settings that add to its versatility in use and allow full customization of its operation. The two-way air direction control is another highlight worth mentioning as it ensures great coverage. It comes with a washable and reusable antibacterial filter that ensures cleaner air indoors.

It is designed for windows that measure 13 inches in height and 23 to 36 inches in width, the system itself measuring 16 inches in length, 12 inches in height, and 15.4 inches in depth. When it comes to installing it, this is a procedure you can confidently take up on your own as the instructions provided in the manual are more than clear.

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11. LG LW6016R

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Although the LG ranks low in our top, it does not mean that it is less efficient, and you can see it from the way it manages to cool areas of over 250 sq.ft. with minimum energy usage. The drawback of this item is the limited 2-way air flow deflection, compared to the previous models.

Still, it has 4 operating modes and 6 total cooling and fan speeds, 3 of each, and it can filter the air while cooling it as well. The unit comes with a remote control for easy handling and indicator lights so you will keep tabs on its status at any time.

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12. GE AEV05LX

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This model has been designed with 2 fan speeds. This means that you can make it operate according to your needs and specifications. In addition to this, it has a cooling capacity of 5000 BTUs which means that it has the ability to cool down a room fast and efficiently. As well as, it also features an EZ mount that can be used for a range of windows. Additionally, the mounting equipment is included so you don’t have to invest further.

You will be thoroughly pleased to know that it doesn’t emit any ozone which means that you don’t have to worry about your health. As well as, you can keep it functioning for as long as you wish in the baby’s room. Also, it requires 115-volts standard outlets which means that you don’t have to call in a professional to help you out.

This model is suitable for windows that measure 23” to 38” wide so it’s suitable for the majority of windows. As well as, the controls are very easy to control as they’re positioned on the front of the unit so you can operate it according to your needs whenever you wish.

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Window ACs 101

Most people know what air conditioners are and they resort to these items because they are effective in adjusting the temperature, but few have heard about a window air conditioning unit. This device does not differ much from a regular A.C. unit but it still remains a separate item. The window version, as the name itself suggests, is installed at the window in order to collect air from outside faster and provide a higher efficiency while limiting the electricity use.

It is more compact than the regular type and the fact it fits within your window frame means you won’t have to find a place for it in case you have a small home. However, aside from the good sides, these units also come with some drawbacks that are worth taking into account before shopping for a unit.

AC Pros and Cons

Window air coolers are a better choice than other types of coolers for many reasons but they are not perfect and come with their own disadvantages. For you to be convinced that this unit is what you need for your home, you must have everything figured out and be aware of both the pros and cons of the window-mounted units.

PROS

• Lower Cost
  Unlike the large A.C units or the portable ones that cost a lot of money, the window version is more affordable and it implies lower costs. While the range of prices varies from $100 to $2000, you must know that a reasonably good unit costs around $400 so you should not be too drastic when making up your mind. Of course, the price depends mainly on the brand and the features provided, as well as on the capacity of the unit to cool a certain room area.
• Energy Efficient
  When you think of an air conditioner, you automatically assume that buying one will severely affect your household electricity bill but this is not the case with the window version. After comparing the two models, you can see that you can save a lot of money if you choose a window unit instead of a regular or a portable A.C. This is because the window models are designed to consume less energy and meet some energy efficiency standards.
• Efficient Operation
  Thanks to the fact that the unit is installed directly outdoors, it also manages to send the hot air outside while circulating the cool air inside. This maximizes its efficiency in creating cool air without requiring too much electricity or redirecting the warm air indoors.
• Space Saving
  If you were to make a list of all the appliances and devices you need to have at home, there would be little space left for you to live in, so finding compact and space-saving items is a wise way of organizing your home. Portable models or fans that provide you with cool air take floor space that can be limited in some points so installing the window system could be a great way to save more space without sacrificing comfort.
• Versatile Installation
  Although not fully portable, it still provides many installation options. You can always move it from one room to another without the need to drill holes or make house changes. Whether you live in an apartment, a ground house, a dorm room, or you want it for the office, it can be installed anywhere and moved around.

CONS

• Harder to Install
  If you are not a handyman, you might find it hard to install it because it requires some work.
  You need to be very careful how you handle it because it can easily fall if not secured in place. Also, you must pay attention to your window type as not every window can support such a unit.
• Might Affect Your Home Security
  No matter how well you install it, chances are it can become an entrance for potential burglars. Although the unit is secured inside the window frame and it does not allow air to get inside the house, it could weaken your home security by making the window easier to crack open.
• Unaesthetic Design
  Although the window unit is mounted on the outskirts of the room and does not interfere with your space or stand in your way,
  it hardly complements the design of a room. Most units come in a white finish with a plain design that hardly fits into a room décor and seeing it every time you take a look at the window is not the most appealing sight.

How to Clean a Window AC without Removing It

Removing the AC to clean it is contraindicated as you risk accidentally damaging the unit in the process. Luckily, there are methods you can turn to and clean the cooling unit without actually taking it down from its installation spot.

Depending on whether you choose to clean it daily or occasionally, you will have an easier or tougher time performing the procedure. Evidently, if you clean it on a regular basis, the task won’t be as time-consuming. Moreover, there is the added benefit of the fact that a clean AC is bound to perform better and upkeep a safe, healthy environment for you to be in.

Before you begin, you must round up the following items:

• Spray bottle;
• Hydrogen peroxide;
• Detergent;
• Bucket of water;
• Dry towel

Daily cleaning routine

Fill a spray bottle with hydrogen peroxide and turn off the AC. Gently spray the intake area of the unit with the solution. Let the unit dry properly before you turn it on again. Preferably, clean it at night so that the hydrogen peroxide solution dries until the next day.

If this did not suffice to clean the filters, consider deep cleaning. This means that you should take out the filter and spray the unit further than you did the first time. To clean the filters in this scenario, use a wet towel. Put back the filter and let everything dry before you turn it on again.

Monthly cleaning routine

If you take up monthly cleaning as opposed to daily service, then you should know from the get-go that your job will be a bit tougher as a hefty amount of dirt has likely already accumulated. Evidently, before you begin, you should turn the unit off.

Afterward, you can start by removing the front panel to access the filter. Moist the towel using detergent and water, and clean the filter. If it is too dirty, you can place it under running water for the dirt to more easily come off or use a vacuum hose prior to wiping it with the towel to remove the dirt cover.

When the filter is dry, you can return it to its position. In case it is too worn out, don’t take chances and replace the filter with a compatible model preferably manufactured by the same brand.

Seasonal cleaning routine

While it is not advisable to only clean the AC seasonally, some users inevitably find themselves in this situation. If you forget to clean the unit for a long amount of time, it is obvious that you have to be prepared for a tougher job than normally as deep cleaning is required to remove the dirt and dust that have likely clogged the surfaces and filters by this point.

What you must do is disconnect the unit from the power source and remove the case. Clean this part first using a mixture of hot water and detergent. Next, remove the filter and use a vacuum, wet tower, or dipping it in a bucket to thoroughly clean this part.

Follow up by using a soft brush and spray to remove the dust accumulated on the fins and coils. Make sure to wipe all the remaining surfaces as well to get rid of any remaining dirt. Lastly, let all the parts, as well as the filter, dry off properly and put them all back together.

AC Maintenance Tips

Just like any other product out there, it needs to be taken care of properly to perform well at all times and to last for as long as possible. If you already own such a unit or you plan on buying one, check out this section of the article to find out how to take proper care of it.

• Wash the Filter Every Month
  Most models feature filters that are easily accessible, all you have to do to reach them is to remove the front panel. After you have removed the filter, clean it gently using warm water and dish soap. Let it air dry completely and then put it back in the unit. You should do this once per month to ensure proper operation and to make sure that the unit won’t release nocive particles in the air.
• Clean the Condenser Coils
  Inevitably, as time passes, dust and dirt will build up in the condenser coils. When this happens, the unit will work harder to remove the heat, thus increasing energy consumption. This is the reason why it is necessary to clean the condensing coils at least once per month , ensuring that the operation of the unit won’t be made difficult.
• Clean the Water Pan
  Another part of the unit that requires your attention once in a while is the water pan. Once every 2-3 weeks , use warm water and dish detergent to thoroughly clean it in order to prevent mold from forming as it is one of the most potent allergens and most harmful contaminants.
• Check the Cooling Coils for Ice or Frost Buildup
  During the cold seasons, there is another aspect that you have to take into consideration when it comes to maintenance work, more precisely the fact that ice and frost might build up on the cooling coils. When the temperature is so low that ice and frost build-up, you should stop using the unit altogether if you want to ensure its protection. After all, you won’t need it anymore anyway because the environment indoors will be cool enough.

Buying Guide

Now that you know what these units are and which are their pros and cons, you need to pay attention to the details that influence the quality and utility of a particular model. As with any other object you buy for your house, there are some aspects that matter and contribute to a successful purchase.

• The cooling capacity
  Not all systems are as powerful and manage to deliver the same amount of cool air and this has to do with their number of BTU or the British Thermal Units. The bigger the number, the larger the area the unit can cool, meaning that you need to consider this when choosing a unit for your home, as well as other factors such as the usage of the room or the amount of lighting it receives. Luckily, you can find BTU calculators on the internet so you do not need to do the math by yourself.
• A unit that is suitable for all-year use
  If you really want to spend your money wisely, you could consider a unit that can be used both for cold and hot air.
  Not every system can deliver hot air as well so even though the price of such a unit is bigger, you won’t have to invest in another heater for the cold season so the investment is worthy.
• The air deflection directions
  You want to find a unit that will spread cool air throughout the entire room while still being comfortable to have around so it is best to look for one that has more than 2 ways of directing the air flow. The best models have adjustable louvers so the air can be sent upwards, downwards, to the left, and to the right.

Rating Our Picks

• We observed the ease of installation
  All our units come with an included installation kit that ensures ease of installation and limits the potential issues you might experience. Two of our models also come with included side curtains so they will perfectly fit your window size.
• We analyzed the performance
  Perhaps the most important aspect of any appliance is how well it yields so we only chose the window A.C. Units that showed the best performance in creating cool air. Depending on their BTU power and the room size they were designed for, the models we chose were the most efficient in keeping the room temperature at a comfortable level.
• We looked for reliable manufacturers
  It is important to know that the manufacturer provides quality products that do not break down and in case they do, they are backed by a good warranty. The products we chose come with warranties that cover their malfunctions for up to 5 years and there is also customer support at your service at any time.
• We checked the energy efficiency
  Window air conditioning units use less energy than the regular units and are designed to meet some strict standards that guarantee a good operating at low costs. The energy efficiency ratio is the benchmark that shows how energy-saving a certain product is. In our chart, you can find models with an EER of 10.9 or 11.2 that promise to offer you great performance without increasing your bills.
• We opted for multiple features
  Besides the actual air cooling feature, we also looked for other particularities that turned out to be very useful, like the multiple speeds or the various operating modes that let you customize your unit. We also chose models that came with an air filter because the quality of the indoor air is of utmost importance. Also, all our units come with indicator lights that let you know the status of the appliance and some of them have features like an air ionizer, auto restart, programmable timers or sleep functions.

How to Reduce Home Cooling Costs

It is known that keeping it on can even double your electricity bill but what can you do when the temperatures get unbearably hot? If you must turn it on but you still want to feel cool at home, the window system is your best solution. It can reduce the bill by 50% so you can enjoy the highest level of comfort. Still, there are some tips that can help you cut down even more on the electricity bill.

• Turn it off when you are not in the room
  It is common sense that you should not keep the AC running when you are not at home and you should also turn it off if you won’t be in the room for a long period of time. If you plan to go out or you will take a shower, pause its functioning and turn it back on only when you come back into the room to avoid wasting energy. If you still want to come home to a cool room,
  try a higher temperature settinglike 85 degrees instead of 70 and you will manage to save some bucks.
• Keep it lower at night
  At night, you don’t need to feel as cool as you do during the day so now it is a good time to reduce the running costs of your AC. If you have a smarter unit that has a Sleep mode, you can take advantage of it and choose it for the night. A great tip would be to turn it on 20 minutes before going to bed so it will manage to lower the room temperature and you will feel comfortable the entire night.
• Clean the ducts
  If one of the ducts that deliver cool air is clogged, the unit will run more in order to compensate for the lack of performance. This is why it is important to clean all the vents and ducts to prevent a faulty functioning. Also, make sure the ducts are properly insulated otherwise, you won’t be getting the cool air you are aiming for.
• Ensure proper maintenance
  Every malfunction should be handled in time in order to prevent further damage that could alter its functioning. A clogged filter can make it work harder without actually showing an improvement in colling your home. For more complicated maintenance task, it is always best to reach for the help of a professional.
• Turn the lights off
  It is known that light creates more heat so you would better turn them off to keep the indoor temperatures as low as possible. Given that the window AC is placed in direct sun, it will have to deal with heat so you would not want to add more burden to it.

Trustworthy Brands

Any field brings several manufacturers to the attention of clients but only some of them manage to remain among the most reliable ones that customers go back to every time they need a new appliance. Below, you will find the finest brands that design efficient and quality air conditioners so you will know which one to go for.

• Frigidaire
  You probably know that Frigidaire provides a wide range of appliances of all sizes and types, from refrigerators to microwaves and even air cooling machines. They are designed by this reputable manufacturer are among the customers’ favorite for many reasons and once you lay eyes on the Frigidaire FFRE1033Q1, you will be convinced of its high quality.
• Haier
  When looking for affordable yet durable and satisfying appliances, Haier is a great option because you will discover a great price-quality ratio. The products coming from this brand suit many of your needs and can be successful replacements of more expensive models , which means you can save money without sacrificing quality and performance.
• Koldfront
  Koldfront appliances are made with care and performance in mind for those looking for a great price-quality ratio. They design a wide range of products. They also specialize in coolers and ice makers that can perfectly complete a home bar or kitchen.

Frequently Asked Questions

Conclusion

There are quite a few different types of window ACs that you can pick between, whether we are talking about the low profile window ACs that are best suited for small rooms, ensuring quick cooling times or the quiet window ACs that provide a hearty cooling of the area without making much noise. However you put it, window mounted air conditioners are here to say, these fan favorites providing ultimate cooling in a convenient, space-saving manner.

Best Overall: Koldfront WAC18001W
The year-round service provided by this powerful Koldfront entry makes it the go-to regardless if you want to cool or warm up the space you install it in. It comes with everything you need to set it up, so just arm yourself with a bit of patience and attention, and you will get the job done in no time. In terms of cooling, it delivers 18,500 BTUs, while for heating, it provides 16,000 BTUs. You can rely on it to work in areas and spaces of up to 1,000 square feet, which is sufficient in some cases for the entire residence or office.

As it is so powerful, you might fear that it won’t be energy efficient, but this isn’t the case at all, luckily as it doesn’t draw much power to begin with, and you also have at your disposal the Energy Saver mode that you can opt for when you want to further cut on operational costs. Moreover, it features 4-way air deflection so that the cool air is delivered how you want it in the room for efficient coverage.

Editor’s Choice: Koldfront WAC12001W
Suitable for spaces of up to 550 square feet, this Koldfront entry that has become our favorite for its efficiency in cooling as well as the reasonable power draw it boasts is an option we strongly advise you take a look at twice before you draw a conclusion. What impressed a lot with it is the fact that it can draw upwards to 60 pints of moisture per day from the air. Thus, not only will the space feel cooler, but excess moisture won’t be an issue anymore and you won’t be threatened by mold growth either.

Best Window Air Conditioner for Sliding Windows: hOmeLabs HME20003N
Small but fierce, especially when it comes to its performance in cooling small rooms, the hOmeLabs HME020003N is compatible with sliding windows, and we recommend you look into it closely if this is the case with you. It does indeed only cover up to 150 square feet, which means that you cannot rely on it for cooling the air in a large-size room, but this isn’t necessarily a downfall. One of its main highlights stands in the 7 selectable temperature settings that allow you to preserve the desired room temperature with no hassle whatsoever and in the most intuitive manner possible.

Best Window Air Conditioner for Small Room: Haier ESAQ406P Serenity Series
If you don’t have a large area that you want to cool, there’s no point in acquiring an AC that over-performs as you just end up spending a lot more money when the energy bills than you should, all with no good reason. Instead, you should look into a system that provides the area coverage you seek. The Haier ESAQ406P is among the best AC systems for small rooms and spaces as it blasts 6,000 BTUs cooling power to effectively cover areas of 200 to 250 square feet. Moreover, it doesn’t produce much in the way of operational noise either, the mere 43 decibels it outputs making it perfect even for use in the office.

Most Energy-Efficient Window Air Conditioner: Frigidaire FFRE1033Q1
Despite the fierce 10,000 BTUs it outputs, this entry from Frigidaire maintains its energy efficiency, which is a notable aspect considering how much power ACs tend to draw. As a matter of fact, it is rated at approximately 670 kWh per year, the great energy efficiency ratio making it one of the go-to options for those who seek large space cooling at a fair price and with as little money spent on operation as possible.