Best low wattage air conditioner

Here are the best low wattage air conditioner models based on their energy efficiency ratio, overall performance, industry reviews, and user feedback.

After researching and analyzing 40 units from manufacturers like Danby, Friedrich, Frigidaire, GE, Haier, Kenmore, LG and more, we found several units that stood out based on their efficiency – as well as overall performance and customer satisfaction.

Although we focused primarily on the EER ratings of each unit, we also took into consideration the industry and customer feedback on each product. For example, if a unit had an excellent EER ratio but poor reviews and feedback, we didn’t include that model in our final analysis.

Finally, we recommended window AC units based on their cooling performance and the size of the rooms being cooled. This means we chose a high-performing efficient AC for small bedrooms (6,000 BTUs), medium-sized rooms (8,000) and large spaces (10,000+ BTUs).

Best low wattage air conditioner

These are our top choices in window ACs that will save you money. There are hundreds of products on the market. This list of 7 has been carefully chosen and we have covered a variety of sizes for any room.

1. Amana AMAP050BW

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Editor’s #1 Choice

Estimated Yearly Cost$45
Weight52 lbs
Dimensions16 x 15.3 x 12.5
WarrantyYes – 1 Year

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The top pick for most energy-efficient window-mounted AC unit is the AMANA 5,000 BTU model.  It’s Energy Star certified and has an 11 EER, according to the manufacturer. This mid-range energy efficiency rating is just one of the reasons that this is a go-to window unit for efficiently cooling down the home.

The 5,000 BTU rating means that the AMANA can cool down a room up to 150 square feet, making it a great choice for a large bedroom or living space. While it cools, it also works to dehumidify and can remove up to 1.06 pints of water every hour.

The AMANA comes with 2 different cooling modes to use less energy and has proven to show results in reducing utility bills of homeowners. The ‘low’ fan mode gradually reduces the air temperature and is a cost-effective solution for owners concerned about their power bill.

You never have to worry about the room overheating after a power failure; the AMANA unit automatically restarts as soon as the power is restored. Installation and maintenance can both be done on your own, even if you don’t consider yourself overly handy. The easy-install window mounting kit is included, so just follow the manufacturer’s provided instructions.

For maintenance, AMANA says that it’s “made easy with the removable and washable air filter. Simply rinse every few weeks to keep your air conditioner at peak performance.”

There’s even a “clean filter” light that alerts you when it’s time for a filter wash or change. As long as you follow the room square footage recommendations, there won’t be one inch of space that goes uncooled thanks to the 8-way directional air louvers.

This unit has everything you could ever ask for, especially when it comes to staying efficient with your cooling needs.

2. Friedrich Chill CP06G10B

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Best for Small Rooms

Estimated Yearly Cost$50
Weight60 lbs
Dimensions20.9 x 18.4 x 14
WarrantyYes – 5 Year limited

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The Friedrich Chill CP06G10B is one of the best-selling window air conditioners on Amazon and was recently named the best window unit for small spaces by The Spruce.

With a 6,000 BTU rating, the CP06G10B is ideal for rooms from 150 to 250 square feet, and offers an EER rating of 12.2, making it ENERGY STAR® qualified.

This model comes with everything you’d expect from an up-to-date window unit: digital remote, digital thermostat, 24-hour timer and an auto-restart function that saves previously used settings. Three cooling speeds and an “Auto Air” system maximizes air movement and circulation, which helps keep the unit performing smoothly and prevents hot pockets of air.

The installation kit allows you to use the CP06G10B in a window or through the wall, and an EntryGuard anti-intrusion feature helps make the unit avoid becoming a security hazard.

Filter reminders and cleanable, antimicrobial filters make this an easy-to-maintain air conditioner, and with a 1-year limited warranty, you’ll be covered for your first full season of use.

As one of the highest-rated window ACs on Amazon, it has plenty of perks, and one of the only downsides is that at 60 pounds, it’s one of the larger 6,000 BTU window units, though its dimensions aren’t as bulky as you may think.

3. LG LW8016ER

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Best for Medium-Sized Rooms

Estimated Yearly Cost$60
Weight58 lbs
Dimensions19.6 x 19.4 x 12.4
WarrantyYes – 1 Year

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LG makes some of the most commonly used air conditioners on the market, and their LW8016ER maintains the brand’s reputation and performance well.

It’s received high marks from Consumer Reports – one of the best rated 7,000 to 8,500 BTU options – and it was also named the air conditioner of choice by Wirecutter, who say that this unit is “the window AC you should probably get, especially if it’s for an office, den, or other room where you won’t be sleeping.”

That last remark is due to the LG’s slightly higher-than-average noise rating, which is listed as 54 dbA indoors and 60 dbA outdoors. Though this is slightly louder than what may be comfortable for some users, it’s also not necessarily high enough to turn off most users.

The 8,000 BTU unit is ideal for rooms between 250 and 340 square feet, and the 12.2 EER rating makes it ENERGY STAR® qualified – with all the features of these appliances, such as energy-saving modes, filter reminders and solid performance features.

Two-way air direction and three cooling speeds give you plenty of flexibility in finding your comfort zone, and a digital remote helps you set it and forget from across the room. At 58 pounds, it’s a relatively small size for a 8,000 BTU unit, and the outside has an “anti-corrosion coating” that’s patented by LG. This helps the unit sustain the elements through summer and the rest of the year if necessary.

A one-year parts and labor warranty covers you for early-use issues, but the user feedback on the LG LW8016ER is solid, especially considering the industry average reviews for window ACs – even good ones – can be less than stellar (mostly due to inflated expectations related to cooling performance).

4. Frigidaire FGRC1244T1

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Best for Large Rooms

Estimated Yearly Cost$90
Weight70 lbs
Dimensions19.8 x 19 x 14.5
WarrantyYes – 5 Year Limited

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The Frigidaire FGRC1244T1 is one of Consumer Reports‘ best rated recommendations for window air conditioners, and there’s a reason why: its cooling performance is matched by Wi-Fi connectivity and other “smart” options that make this one of the most efficient and convenient units available today.

At 12,000 BTUs, the FGRC1244T1 is rated to cool rooms up to 550 square feet. It has an EER rating of 12.0, and according to Frigidaire’s corporate website, the unit is ENERGY STAR® qualified. However, the AC is not currently listed on ENERGY STAR®’s website, though the stated EER, if accurate, would place it into ENERGY STAR® compliance.

Where the FGRC1244T1 excels is flexibility and convenience. Download the Frigidaire app and you can control the temperature and settings of your AC from anywhere. Cool your home down before you get to work, or turn the unit off while you’re out at night. You can also control the FGRC1244T1 with Amazon Alexa and Google Assistant, making it one of the most versatile “smart” appliances on the market.

Its trend-setting features don’t stop with function alone; the FGRC1244T1 is sleek and not the eyesore that many large window units appear to be. At 72 pounds, it is large, but this is to be expected with a 12,000 BTU air conditioner.

Slanted airflow features help with positive airflow, and three fan speeds keep things moving when needed, and quiet when you need subtle cooling. Frigidaire employs its Effortless™ Temperature Control to help maintain room temperatures, which also means the unit doesn’t have to work quite as hard to keep consistent.

With all these features, there’s only one drawback: the FGRC1244T1 clocks in at nearly $500, so it’s ideal for homes with larger rooms that don’t mind the higher upfront investment. However, the energy savings of this unit (especially against comparable ACs) can make up for the higher upfront costs.

If you’re looking toward the future of smart cooling appliances, or your home uses Amazon Alexa or Google Assistant, the Frigidaire FGRC1244T1 is an excellent choice to keep your tech-driven home efficient and comfortable.

5. Haier ESAQ406T

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Quietest Option

Estimated Yearly Cost$44 (low setting)
Weight55 lbs
Dimensions18.1 x 21.2 x 12.4
WarrantyYes – 5 Year Limited

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Unlike central air conditioners, room ACs can be loud: because their parts – motor, compressor, fan – are all in or near the space you’re cooling, you can hear them more than if they were entirely outside.

That’s not a problem, however, with the Haier ESAQ406T, our top pick for small bedrooms. This unit is quiet, performs well and doesn’t cost much more than similar units in this category (6,000 BTUs).

“At its lowest fan setting and with the cooling mode turned on, the Haier ESAQ406T runs at just 54.5 dBC,” says Wirecutter. “That’s almost 8 dB quieter than our main pick, a very obvious difference.”

Wirecutter named this model its upgrade pick for bedrooms, and Business Insider named a variation of this model one of its top window ACs available.

Haier claims that this is the quietest window AC on the market based on third-party tests, so if you’re looking for an efficient machine that won’t interrupt your work, study or sleep, this model is hands above the rest.

The ESAQ406T offers an EER of 11.2, which doesn’t qualify it to be ENERGY STAR® qualified, though a similar Haier model does meet those guidelines. However, the ultra-quiet performance of this machine, combined with its relative parts and reputation still make this one of the best picks for an efficient small bedroom AC.

The editors of Wirecutter note that “since window ACs are so tightly regulated by the Department of Energy, we’re confident that it will perform similarly to the 6,000 Btu variants of our main pick and runner-up.”

The ESAQ406T offers four modes: cool, fan, dehumidify and energy-saving mode. A 24-hour timer, remote control and sleep mode make it convenient and easy to keep on a schedule. Haier claims that it cools rooms up to 250 square feet, and ultimately, it’s ideal for small spaces that need white noise to a minimum: bedrooms, home offices and the like.

6. Arctic AW6005E

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Value for Money

Estimated Yearly Cost$50
Weight46.2 lbs
Dimensions18.6 x 15.5 x 12.7
WarrantyRequest online

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If you want to ensure your room is cool enough to take on the summer heat without making a dent in your pocket, look no further than the ARCTIC AW6005E Wind 2016 Energy Star Window Air Conditioner.

It provides consumers with sustained cooling without having to spend too much upfront; positioning itself as one of the most economical options available in the current market.

The window air conditioner comes with 6000 BTU units, enabling it to cool a small room of up to 260 square-feet with relative ease. The unit also features a 12.1 EER rating and is ENERGY STAR® qualified for added efficiency.

Although the unit is affordable, its low price point should not be mistaken for sub-par quality. The window air conditioner is built with high-quality parts and lives up to consumer expectations in performance parameters.

Additionally, the Arctic AW6005E comes equipped with a remote control for added consumer feasibility, along with an energy saver function, and a digital panel laced with an LED display featuring single-touch ease of operation.

The Arctic AW6005E’s filter is completely washable, which means cleanliness will never be a concern with this product. Affixed with adjustable horizontal louvers, this unit provides comfort, as well as cooling at an exclusive price point which makes it the best budget option.

Complete with 3 different cooling options and a limited one year labor and parts warranty, the Arctic AW6005E is a cost-effective, yet reliable window air conditioner.

7. Danby DAC080BGUWDB

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Value for Money

Estimated Yearly Cost$60
Weight50 lbs
Dimensions17.5 x 18.5 x 13.4
WarrantyYes – 1 year

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The Danby 8,000 BTU window unit offers amazing value at an affordable price. It comes in a variety of different BTU ratings, so if 8,000 isn’t sufficient or you only need to cool a small space, then you’ve got options. No matter which one you choose, though, you can count on complete Energy Star compliance and a high EER rating (the 8,000 BTU unit has an 11.3 EER).

Most of the models on this list have come with a 6,000 BTU rating, which is only capable of cooling about 250 square feet of space. Since the Danby has an 8,000 BTU rating, it’s better for medium to large rooms that span up to 350 square feet. It’s perfect for the master bedroom or small living spaces.

The Danby window unit “is Energy Star rated and with a 24-hour programmable timer, sleep mode, and energy saver switch, this unit reduces overall operating costs and saves on your monthly hydro bills.”

Sleep mode prevents the room from overcooling overnight while the Energy Saver switche cycles the fan on and off to reduce overall energy consumption.

One of the coolest features of the Danby is the Follow Me function. This allows the remote control to act as a transportable thermostat so that the unit can more precisely alter temperatures based on your location in the room. If you prefer to control the unit without a remote, the electronic control panel is simple to use and backlit for easy viewing.

The only complaint about the Danby window unit is that it’s a bit awkward to install, especially for homeowners with upright windows. Part of this is because of the 50+ pound design, but another reason is the placement of the screw holes on the unit.

Air Conditioner Sizing & Buying Guide

An in-depth guide to buying an air conditioner. Learn everything you need to know to stay comfortable when the weather warms up.

Getting Started

Take the edge off of smoldering summer heat with an air conditioner that perfectly fits your needs. Whether you’re in the market for a small window unit or a whole-house central air system, you’ve come to the right place. This guide covers BTUs, Voltage, Styles, and Features in detail to make sure you find the perfect air conditioner for your home.Shop Air Conditioners


A common misconception about air conditioners is that bigger is better. However, oversized AC units will leave the space they cool feeling cold and clammy. As air conditioners lower temperatures, they also remove moisture from the air. When an AC’s cooling capacity matches the room size, it will effectively manage both temperature and humidity.Getting an air conditioner that’s too small for the space comes with a different set of issues. Most importantly, it will struggle to lower temperatures. As a result, the unit will run constantly, wasting power as your utility bill rises.To avoid these types of issues, the first step to buying an air conditioner is measuring the space you want to cool. Room sizes are measured in square feet. To find the square footage of your room, simply measure the length and width of the room and multiply the two numbers. Once you know how large your space is, check the chart below to see what size AC you need.

Room Size (Sq. Ft.)Room Size (Sq. M.)BTU
100 up to 1509 up to 145,000
150 up to 25014 up to 246,200
250 up to 30024 up to 287,000
300 up to 35028 up to 338,000
350 up to 40033 up to 379,000
400 up to 45037 up to 4210,000
450 up to 55042 up to 5112,000
550 up to 70051 up to 6514,000
700 up to 1,00065 up to 9318,000
1,000 up to 1,20093 up to 11221,000
1,200 up to 1,400112 up to 13023,000
1,400 up to 1,500130 up to 14024,000
1,500 up to 2,000140 up to 18630,000
2,000 up to 2,500186 up to 23234,000

As you can see, the effectiveness of an air conditioner is measured in BTUs (British Thermal Units). A BTU is defined as the amount of energy required to increase or decrease the temperature of a pound of water by one degree Farenheight. The BTUs outlined in the above chart are a good starting point, but issues like sun exposure can make a big difference.

  • Especially sunny rooms will need roughly 10% more power.
  • Rooms that get little to no sun will need 10% less.
  • If the room is regularly occupied by more than two people, add 600 BTUs for each additional person.
  • For kitchens, add 4,000 BTUs.

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What To Know Before You Buy An Air Conditioner Air Conditioners

Types of AC Units

After figuring out the right size for your unit, you need to determine which type of air conditioner makes sense for your space.

Window Air Conditioners

Window Air Conditioners

The most common room air conditioners are window units. Designed for double-hung windows, the kind that opens by sliding the bottom half up, window ACs are easy to install and easy to remove come fall.Just slide the window open, rest the AC on the sill, close the window, and secure it in place. If the air conditioner isn’t as wide as your window, most include side curtains to fill the gaps. While it’s common to put window ACs in storage when the weather cools, they can also be installed permanently.Window air conditioners pull in the hot air from your room and run it over a cooling coil before returning blowing it back into the room. Passing the hot air over the cooling coil also pulls moisture from the air, creating dew. The dew is funneled outside, as is the heat produced to keep the cooling coil cold.Innovations in designs have greatly improved the energy efficiency of window air conditions in recent years. From high-efficiency compressors to energy-saver settings, these improvements help you save money while staying cool. Look for ENERGY STAR certified models to cut down on electricity costs. Even better, compare the Energy Efficiency Ratio (EER) or the Seasonal Energy Efficiency Ratio (SEER) of any models you’re interested in. The higher the number, the more efficient the air conditioner.The SEER details a model’s average efficency over a range (65°F to 104°F) of outside temperatures. The EER bases its figure on a steady outside temperature of 95°F. If you primarily use your AC when outside temperatures are 95°F or higher, the EER will be a more accurate figure. Otherwise, look to the SEER. Don’t worry if the model you’re interested in only providers one or the other. Either number will still give you a general sense of the model’s efficency.Shop Window Air Conditioners

Casement Air Conditioners

Casement Air Conditioners

A casement air conditioning unit is designed for windows that open horizontally or swing-out (usually with a hand crank) instead of vertically. Casement ACs are basically taller skinnier window units.Shop Casement Air Conditioners

Portable Air Conditioners

Portablesement Air Conditioners

If you can’t mount an AC to your windows, a portable air conditioner might be the best option. These models usually rest on the floor and use a flexible hose to vent hot air outside. The venting hose can usually fit through a small space, such as the center vent often found in basement glass-block windows.While it can be convenient to roll your AC between rooms, portable air conditioners have their share of drawbacks. Most notably, they’re less efficient and noisier than window units. While window models can project their noise outside, a portable air conditioner doesn’t have that option. Similarly, portable ACs need to spend energy pushing excess heat outdoors while window units can let that heat passively radiate out.Portable air conditioners also remove moisture from the air just like window units. But, unlike window units, they can’t just drip the moisture outside. Most portable air conditioners collect the water in a tank that must be manually emptied from time to time. Self-evaporating models need to be emptied less often but aren’t enitrely hands-off. Other models allow you to attach a drainage hose to manage the water it collects.Shop Portable Air Conditioners

Wall Air Conditioners

Wall Air Conditioners

For a more permanent solution, consider a wall air conditioner. These models extend from a wall instead of a window and require a sleeve to be properly installed. Often more efficient than window models, through-wall air conditioners are a good way to stay cool without sacrificing one of your windows. However, installing an in-wall AC isn’t as easy as installing a window unit. Unless you’re comfortable cutting holes in your wall, hire a contractor. If you’re in the Chicagoland area, we here at Abt would love to help!Packaged Terminal Air Conditioners (PTACs) are in-wall units that can heat and cool your space. In-wall units are left in place year-round. Having one appliance to warm you up in the winter and cool you down in the summer just makes sense. If winter temperatures even approach freezing where you live, be sure to get a PTAC with electric heat. The alternative, heat pumps, are less expensive. But they’re also less efficient.Shop Wall Air Conditioners

Central Air Conditioning Systems

Central Air Conditioning Systems

If you’re looking for a whole-home solution, Central Air Conditioning Systems are the way to go. Usually, one main unit pumps cool air through ducting to each room in the building. While these systems are more expensive than the other options, they are much more convenient. Upfront and energy costs are both higher with a Central Air Conditioner. Because instead of using room air conditioners to manage specific areas of your home, central air keeps your whole house cool.Central air systems with zone controls combine the convenience or a whole house system with the localized controls of window and portable ACs. These systems include thermostats in each room so that you can precisely manage temperatures anywhere in your home. This versatility can be especially useful for poorly insulated or especially sunny rooms.If you are looking to do away with portable or window air conditioners, Abt is licensed to install central air systems. This service is only for our Chicagoland customers. Give us a call at 800-860-3577 so we can find a time to come look at your home and provide an estimate.Shop Central Air Conditioning Systems

Mini-Split Air Conditioning Systems

Mini-Split Air Conditioning Systems

Mini-split AC systems are electric heating and cooling systems that do not require ductwork. They consist of an indoor unit and an outdoor compressor. The indoor units install above a doorway or just below the ceiling. These highly energy-efficient devices are a great whole-home climate solution. By installing indoor units in every room, each member of your family can dial in their ideal temperature for maximum comfort. Depending on the model, one compressor can control up to eight rooms.Shop Mini-Split Air ConditionersShop Air Conditioners

Other Things To Consider

Once you’ve decided which type and size AC unit to buy, you need to figure out which features you want in your air conditioner. Features like AC controls, remote controls, as well as integrated air filters are all key things to consider.

Ability to Direct Air Flow

Even the most powerful air conditioners won’t be much help if they can’t direct the cold air where it’s needed. With this in mind, most models use adjustable louvers that allow you to direct airflow vertically or horizontally.When selecting an AC, consider your room layout. Directional airflow is especially important if you plan on installing the air conditioner in a window that sits behind a couch or other obstruction. Make sure to buy an AC unit that can direct the cool air above or around any obstructions.


The most basic air conditioning units will have very simple controls: a knob for temperature and a knob for fan power. These models are great for getting a blast of cold air into a room but don’t allow for subtle climate controls. More advanced models are equipped with digital controls that can monitor and maintain precise temperatures.

Remote controls are another convenient feature to consider. With a remote, you can make temperature adjustments from anywhere in the room. Keep it on your nightstand and you’ll be able to cool things down at night without even rolling out of bed.Many air conditioners can be programmed to turn on or off at preset times of the day or week. This money-saving feature makes it easy to have a comfortable house to return to after work without wasting electricity while you’re gone. Just program it to turn off before you leave in the morning and then kick back on a bit before you come home.Some newer air conditioners even offer smart controls. These models can be adjusted with an app on your smartphone from anywhere. Many smart ACs will even respond to voice commands via digital assistants like Amazon’s Alexa or Google Assistant.


A few models provide heat as well as AC. This is a great option for those times between seasons when it’s a little chilly, but not cold enough to turn your home’s furnace on.

What’s my plug type and what voltage do I need?

Your plug type will let you know the voltage and amperage requirements of your new AC. Make sure your new AC Unit matches your existing electrical requirements. Attempting to plug your AC unit into an outlet with a different plug type or voltage can be very dangerous. Below is a chart illustrating plug types and their corresponding electrical information.

Voltage and Amperage

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