Most Energy Efficient Air Conditioners – {Top 12} In 2021

Most energy efficient air conditioners should function smartly, decrease the carbon footprints and cool your home in improved time. According to the US Energy Department reports, people spend 6 percent on the energy used by the air conditioners. Thus, this area requires improvement to lower down our electricity bills.

This is possible if we use the right energy efficient window air conditioners.  In the recent past, the use of the windows AC unit was degraded due to its high consumption of energy. But, the manufacturers make efforts to redesign these windows AC as energy efficient air conditioners.  Thus, these best energy efficient window air conditioner have a great performance in terms of cooling home and energy efficiency. 

The latest estimates dhows that by adopting these best energy saving air conditioner you can save 40 to 50 percent of electricity costs.  Energy Star certified portable air conditioner uses a great quality material in manufacturing and provide a cleaning instruction manual. Therefore, to improve lining and sealing around the air conditioner. 

Following Are The Key Features Offered By Energy Star Rated Portable Air Conditioners

  • You can adjust and schedule your temperature settings.
  • One can turn off energy saving air conditioner via smartphone or computer
  • Energy consumption details can be received
  • A comfortable, cost effective, and convenient air conditioner energy saver

Here we write most energy efficient air conditioners reviews elaborating their features and specs. We studied more than 40 units and then shortlist top 12 energy saver air conditioner of trusted and top rated brands. 

 

FCANNON’S #1 CHOICE

1. Friedrich 6000 BTU Window Air Conditioner

If you are seeking for the most energy efficient window ac for a small room then 6000 BTU’s unit is perfect for you.

Read Our Full Review
Window-Mounted

2. LG Window-Mounted 8,000 BTU 115V

LG is a well renowned and popular brands due to its performance and reliable electronics appliances.

Read Our Full Review
Smart Window

3. Frigidaire Wi-Fi Control Smart Window

According to customer reviews, this model by Frigidaire is the most energy efficient air conditioners along with Wi-Fi enabled and other smart options.

Read Our Full Review
Window Air Conditioner

4. Haier 6,000 BTU Window Air Conditioner

Most people complain about their noisy and loud air conditioner.

Read Our Full Review
Air Conditioner

5. ARCTIC Wind 6,000 BTU Window Air Conditioner

A budget friendly and economically priced most energy efficient air conditioners. 

Read Our Full Review
PIONEER Air Conditioner

6. PIONEER Air Conditioner Minisplit Heatpump 12000 BTU

PIONEER comes in the market with its exclusive equipped electronic devices.

Read Our Full Review
Cool Air Conditioner

7. hOmeLabs 5000 BTU Cool Air Conditioner

One of the most energy efficient air conditioners available in the market.

Read Our Full Review
Mini Split

8. Senville Mini Split Air Conditioner White4

Specially designed for cooling an entire level of the building, extremely large office halls or an entire home.

Read Our Full Review
Mini Split Air Conditioner

9. Senville Energy Star Mini Split Air Conditioner

Another product by Senville, similar to above mentioned air conditioner unit.

Read Our Full Review
Window Air Conditioner

10. LG BTU 115V Window Air Conditioner (Not an Energy Star)

Seeking for energy efficient window air conditioners with a digital thermostat then this is a perfect option for you.

Read Our Full Review
Window-Mounted

11. Amana Window-Mounted Air Conditioner 15,000 BTU

Amana is lading in the market just like a rising star. This brand is launching various electronics products.

Read Our Full Review
Window AC

12. TOSOT Energy Star, Window AC

If you are searching for a portable air conditioner energy star following the modern design and latest approaches then you should buy these most energy efficient air conditioners.

Read Our Full Review

Friedrich 6000 BTU Window Air Conditioner

9.9
FCANNON’S #1 CHOICE
  • Best suited small energy efficient window air conditioner for room size 250 square feet.
  • A fresh and new look in white color
  • 24- Hour timer enables you to schedule on and off time intervals.
  • The most energy efficient air conditioners use the fan when the room is chilled enough.
  • Air sweeps cool the room all around.

If you are seeking for the most energy efficient window ac for a small room then 6000 BTU’s unit is perfect for you. The Energy Star rated portable air conditioners are suitable for room size ranging from 145 to 240 square feet. In addition its energy efficient ratio ERR is 12.2 which ensures its working standards.

Moreover, the energy efficient window unit comes up with amazing features like auto restart function that uses already saved settings. Apart from this, it has a digital thermostat, digital remote and a twenty-four-hour timer. In addition, it has three options to adjust the cooling speed of the air conditioner.

Above all, the “Auto Air” feature provides air circulation throughout the room. The filters of the best energy star air conditioner are antimicrobial that make their maintenance and cleaning easy. The company offers a warranty of one year cost free maintenance.

LG Window-Mounted 8,000 BTU 115V

9.8
Window-Mounted
  • It uses 115 volts electrical vent
  • It is one of the most energy efficient air conditioners having 8000 BTU’s and 12.1 EER.
  • Suitable for medium size rooms up to 340 square feet.
  • It offers flexibility in cooling ranges by providing 3 cooling speeds and 3 fan speeds.
  • Dual airflow directions keep your room cool throughout.

LG is a well renowned and popular brands due to its performance and reliable electronics appliances. LG Window-Mounted 8,000 BTU 115V upholds the claims of performance and repute of LG. This energy efficient window ac unit is specially designed for medium sized rooms. It has best rated 8,000 BTU’s that can cool a room size ranging from 250 to 340 square feet.

One aspect of this air conditioner is its noise that is quite higher for indoors 54dba and for outdoors its 60dba. So, it may be a worrying factor to some users or not to others.  Moreover, the emery efficiency ratio is 12.2 making this air conditioner Energy Star certified portable air conditioners. The air conditioner has modes to save the energy, provide reminders for filter cleaning end exceptional in terms of its performance.

Frigidaire Wi-Fi Control Smart Window

9.8
Smart Window
  • It is Wi-Fi ready to connect with controllable mobile apps of smart phone.
  • Energy Star certified portable air conditioner with ERR 12.0 AND 12000 BTU.
  • Recommended for large areas up to 550 square feet.
  • You can control the fan speeds modes, temperature, or turn on or off the air unit with the smartphone.
  • A large bulky and expensive most energy efficient air conditioners

According to customer reviews, this model by Frigidaire is the most energy efficient air conditioners along with Wi-Fi enabled and other smart options. The best energy efficient air conditioners suitable for large size room size up to 550 square feet. The EER rating of this most energy efficient ac is 12.0. Frigidaire official websites entitled that it is an Energy Star qualified air conditioner.

The air conditioner is a smart device because once you install the Frigidaire app on your mobile, you can easily control all the settings and temperature options from mobile. This feature allows you to make your room cool before you come home and can turn off the unit if you forget.

Moreover, it is large and bulky in design that it should be as it is a 12,000 BTU’s low power consumption air conditioner. This product is quite expensive that is why it is recommended for large rooms.

Haier 6,000 BTU Window Air Conditioner

9.7
Window Air Conditioner
  • This air conditioner can cool, dehumidify, save energy ad fan modes.
  • It has a led display remote control.
  • It has a timer to schedule it’s on and off as per requirements
  • 6,000 BTU room air conditioner with 12.2 efficiencies.
  • An air conditioner energy saver with 4 ways air directional flow

Most people complain about their noisy and loud air conditioner. It is a little bit noisy due to heavy machinery, motor, compressor, and fan are working together in your surroundings. Mostly, this noise is more in 6000 BTU cheap energy efficient window air conditioners.

The quietest model by Haier has attained the market due to its low noise ratio of 54.5 DBA. This noise ratio is 8 times lesser as compared to the LG Window-Mounted 8,000 BTU 115V. So, if you are searching for a most energy efficient air conditioner window unit that will not disturb your sound sleep, work or other activities then buy this model.

Although its EER is quite low 11.2 which means it is not an Energy Star qualified air conditioner. However, its working performance, quiet motor and effective cooling options make it among the top energy efficient air conditioners.

ARCTIC Wind 6,000 BTU Window Air Conditioner

9.6
Air Conditioner
  • A portable air conditioner Energy Star qualified
  • 6000 BTU window air unit
  • Having white color otter body
  • Suitable for a small room up to 260 square feet
  • Remote control with LED display and Digital panel

A budget friendly and economically priced most energy efficient air conditioners. People who wants to have a cool breeze in hot summer days without spending extra penny should buy this model immediately.

As it a 6000 BTU air conditioner so it is suitable for small rooms up to 260 square feet. It is Energy Star certified portable air conditioners with an ERR rating of 12.1. It is a low price energy efficient window unit that doesn’t compromise on its quality. This air conditioning unit fulfills the customer’s demand ensuring high quality parts and exceptional performance.

In addition, this model has a remote control with LED display, digital panel, and energy saver function. Washable filters are easy to clean and wash.

PIONEER Air Conditioner Minisplit Heatpump 12000 BTU

9.6
PIONEER Air Conditioner
  • One of the most energy efficient air conditioners with 12,000 BTU
  • It can cool an area of up to 450 square feet.
  • Remote control with LCD screen
  • Energy saver air conditioner at affordable prices
  • Noise free air conditioner as its reading is 55 DBA.

PIONEER comes in the market with its exclusive equipped electronic devices. This 12,000 BTU by Pioneer is completely remarkable. This most energy efficient ac can be used for any large area up to 450 square feet.

It can make large rooms like a basement, garage, or workspace centrally air conditioner. It is easy to install and make it ready to work. The features that make it a low power consumption air conditioner are its Energy efficiency rating of 11.0 and the Seasonal Energy efficiency ratio is 19.0.

Moreover, you can enable the sleep mode this feature will automatically increase or decrease the temperature. Above all, this energy saving air conditioner does have a “follow me” feature in which the air conditioner cools the atmosphere according to your location. The sensor in the remote control figures out your location.

hOmeLabs 5000 BTU Cool Air Conditioner

9.5
Cool Air Conditioner
  • An affordable and simple most energy efficient air conditioners
  • 5000 BTU air conditioner that can cool any space around 150 square feet
  • Washable and recyclable filters
  • Installation is easy as it has all the equipment included in it.

One of the most energy efficient air conditioners available in the market. A 5,000 BTU air conditioner is capable to cool a windowed room up to 150 square feet. These energy efficient window ac units are suitable for living areas and bedrooms.

Above all, it is gives the guarantee that this most energy efficient air conditioner window unit can cool a space of 150 square feet within fifteen minutes. The overall design is simply small and compact with minimum electrical tools.

Senville Mini Split Air Conditioner White4

9.5
Mini Split
  • It is a 24,000 BTU air conditioner that can cool a space up to 15, 00 square feet.
  • An ultra-quiet model as it has noise rating 47.5
  • It offers a warranty of 3 years for parts and seven years for air compressors.
  • The look and feel of this most energy efficient air conditioners is attractive
  • It does have various options to adjust speed and modes
  • It does provide reminders for maintenance.

Specially designed for cooling an entire level of the building, extremely large office halls or an entire home. This 24,000 BTU energy saver air conditioner is capable to cool an area up to 1500 square feet.

This best energy saving air conditioner is very expensive to buy. But, wait just look at the exclusive and extra ordinary features of this ac unit. It is to be observed that its SEER rating is 20.50 and its EER rating is 12.5. Thus, these high ratings give you one of the most energy efficient air conditioners.

In addition, this ac unit has a remote to control its modes, speeds, timer and settings as per your needs. Some interesting features are self-cleaning mode. Dehumidifier, leak detection, heat options, and many others.

Senville Energy Star Mini Split Air Conditioner

9.4
Mini Split Air Conditioner
  • 12,000 BTU small energy efficient air conditioners
  • It can cool an area of up to 750 square feet.
  • It has an attractive white display
  • The remote control also featuring “Follow me” function
  • It does provide maintenance reminder

Another product by Senville, similar to above mentioned air conditioner unit. But, the difference lies in its price. This model is affordable and budget friendly.  This 12,000 BTU can cool only an area of 750 square feet. However, this air conditioner unit is suitable to cool down medium sized areas.

Moreover, the best Energy Star air conditioner has an ERR of 12.5 and SEER of 30.5. It one of the most energy efficient air conditioners available in the market at reasonable prices. It is also featured with the follow me a function that enables it to read the temperature of your surroundings with the help of sensors in the remote. Thus, it capable to yield more cooling as per requirement.

LG BTU 115V Window Air Conditioner (Not an Energy Star)

9.3
Window Air Conditioner
  • 6,000 BTU for a cooling area up to 260 square feet.
  • It has an EER rating of 11.5
  • It has energy saver mode, programmable timer, and cool mode.
  • One year warranty for parts and compressor.
  • Affordable and budget friendly most energy efficient air conditioners

Seeking for energy efficient window air conditioners with a digital thermostat then this is a perfect option for you. This LG BTU 115V Window Air Conditioner is budget friendly with cooling flexibility.

A 6,000 BTU best energy efficient window air conditioner can cool an area up to 260 square feet. You can install this air conditioner in your small living rooms or bedrooms. It has the dehumidify mode that works at 1.8 pints per hour. Moreover, it provides you 3 cooling speeds and 3 fan speeds to choose ad adjust the temperature of the room.

It has the energy saver function that will save you money. Therefore, its energy saver function automatically shut down the fan and compressor

Amana Window-Mounted Air Conditioner 15,000 BTU

9.3
Window-Mounted
  • One of the best energy efficient air conditioners with 15,000 BTU
  • It is capable to cool large areas up to 700 square feet.
  • It required 115 volts to drive this most energy efficient air conditioners
  • This ac unit offers multiple cooling options, remote control, auto mode, and sleep mode.

Amana is lading in the market just like a rising star. This brand is launching various electronics products. One of the exceptional and remarkable 15,000 BTU air conditioner is presented by this brand. These energy efficient window ac units are quick and easy to install.

It gives you flexibility by choosing between three different cooling options. Above all, it does have auto options for automatic control. Its 3 prongs grounded plug requires 115 volts to drive this small energy efficient window air conditioner.

Moreover, it can cool a room space of 700 square feet. Its dehumidification is done at 3.52 pints per hour. It has a user manual to provide you necessary instructions. Apart from this, it does have a sleep mode and a fully functional remote control.

TOSOT Energy Star, Window AC

9.2
Window AC
  • The smart temperature control feature
  • 3 uses as an ac unit, fan only and dehumidifier.
  • Cost effective air conditioner
  • Energy Star Certified portable air conditioner
  • It lowers down the utility bills.

If you are searching for a portable air conditioner energy star following the modern design and latest approaches then you should buy these most energy efficient air conditioners. The look and feel of this most energy efficient window ac are quite different from the others. That’s is why it has an attractive appearance at first. Its cooling capacity is wonderful as this 10,000 BTU AC unit can cool a room space up to 450 square feet. But you should consider other higher BTU models if your location has a high ceiling or a lot of traffic.

You can use this ac unit in three different ways. Firstly as a portable air conditioner energy star qualified. Secondly, you can avail of the fan as the only option. Thirdly as a dehumidifier.  The modern technology involved in this air conditioner is it can cool your space according to your location. The sensor in the remote control can figure out your location temperature and adjust the cooling accordingly. This air conditioner is available in quite reasonable charges. It will make sure that your electricity bills should be lower.

Conclusion

In conclusion, here we write a buying guide with a purpose to educate you about the upgraded most energy efficient window ac. As we all know that due to heavy bills most people start using most energy efficient inverter air conditioner. Thus, the window air conditioner downfall has ended. This is because they are back in the market with energy saver modes. The latest research shows that these top energy efficient air conditioners save a lot on utility bills. 

Therefore, we write most energy efficient air conditioners reviews on top brands like LG, Frigidaire, Haier, ARCTIC, Friedrich and others. All these brands have attained the market due to their portable and reliable energy saving air conditioner. I hope that after reading these reviews you will able to find the most energy efficient air conditioners as per your needs.

Frequently Asked Questions

Energy saver is a new setting option in the latest energy efficient air conditioners. This feature will keep the unit off while cooling your room. Ultimately saving you on utility bills. The basic science behind it is the unit turns off while compressor and fan are enough to keep the room cool.
Yes, they use the energy in the most efficient way as compared to the other portable air conditioners. This means it consumes more cooling power per BTU. Thus, consider the BTU of air conditioner and the size of the room while buying an air conditioner energy saver.
You can reduce your electricity bills by keeping it one degree up. You should use smart thermoset options and try to schedule them for best use. Take care of cleanliness and maintenance. To save your electricity you should upgrade to the energy efficient window air conditioners
According to our buying guide, the following are the most energy efficient air conditioners Friedrich 6000 BTU Air Conditioner LG Window-Mounted 8,000 BTU 115V Frigidaire Wi-Fi Control Smart Window Haier 6,000 BTU Window Air Conditioner ARCTIC Wind 6,000 BTU Window Air Conditioner
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