If you’re looking for a cost-effective solution to cool your home, while also having a low negative impact on the environment, then you need the absolute best energy efficient air conditioner on the market. After carefully reviewing dozens of products, we’ve decided to compile a list of the 10 best energy efficient air conditioners in 2019 to make your purchasing process easier.

In our reviews, we’ve considered user rating, BTU, efficiency features, unit size, and cooling capacity. Without any further ado, here are our favorite energy efficient air conditioners available on the market in 2019:

10. Midea EasyCool 3-In-1 Portable Air Conditioner

MIDEA Portable Conditioner 8000 BTU Easycool AC (Cooling, Dehumidifier...
  • Midea Portable Air Conditioner
  • Package Height is 34.25 inches
  • Package Length is 18.98 inches


The clever design and engineering of this air conditioner ensures an energy efficiency ratio of 11.2. It cools well and operates quietly, making it a very convenient model. This might be the best energy efficient air conditioner for you if you’re looking for a model you can install both on windows and walls.

User ratingBTUUnit sizeCooling capacity (sq. ft.)
3.7/55,80021" x 19" x 14"250


    • Stores custom cooling programs and schedules
  • Constructed with durable galvanized steel and rifled copper tubing
  • Window or wall installation allowed
  • Quick installation


  • Rather heavy
  • Expensive purchase

9. Global Air 10,000 BTU Portable Air Conditioner


Global Air 10,000 BTU Portable Air Conditioner Cooling /Fan with...
  • Digital controls offer precise temperature adjustments and the remote control lets you control the air Conditioner from...
  • Self-evaporative system no water tank. The condensing water is recycled to improve the efficiency through cooling...
  • Maximum room size up to 400 square feet. Over-cold protection three minutes restart Delay function. Wind blows upward...

This air conditioner from Della uses an ozone-safe refrigerant bar to make it even more environmentally friendly. It has a multi-speed cooling fan and two-way air direction for additional comfort. In addition, its portability makes it highly convenient for any environment. All in all, this is a serious contender for the title of the best energy efficient portable air conditioner in 2019.

User ratingBTUUnit sizeCooling capacity (sq. ft.)
3.7/58,00011" x 14" x 30"300


  • 24-hour timer
  • Portable for extra versatility
  • Affordable and compact


  • Lack of screen on vent tube

Tip: If you move often or simply want a single air conditioner for more than one room without breaking the bank, check out the best portable air conditioners on the market in 2019!

8. Friedrich Chill Series CP10G10B Window Air Conditioner


Friedrich Chill Series CP10G10B Window Air Conditioner, 10,000 BTU,...
  • POWERFUL - 10,000 BTUs of cooling power that will cool rooms up to 450 sq. ft. can be installed as a window air...
  • ULTRA QUIET OPERATION - Window ac designed to cut operation noise to a minimum
  • AUTO AIR SWEEP LOUVERS - Provide consistent air distribution, for even cooling throughout the room or in large, open...

With both three cooling speeds and three fan speeds, this window-mounted unit easily adjusts to all your cooling needs. It has an 11.5 energy efficiency ratio being the most efficient air conditioner so far on our list.

User ratingBTUUnit sizeCooling capacity (sq. ft.)
3.6/56,00018" x 15" x 12"260


  • Convenient remote control
  • Dehumidification up to 1.8 pints per hour
  • 24-hour programmable timer
  • Energy saver function


  • Slightly loud

Note: This product is currently unavailable, but if you’re a fan of the LG brand we recommend looking into this next model:

LG 9,800 BTU Through-the-Wall Air Conditioner

LG LT1036CER 10,000 BTU 230V Remote Control Through-the-Wall Air...
  • Your purchase includes One LG 10,000 BTU 230V Air Conditioner in White | Through-the-Wall Remote Control & Installation...
  • Air conditioner dimensions – 24” W x 14.41” H x 20.09” D | Weight – 70 lbs. | Indoor Noise Max rating – 56...
  • Performance: 10,000 BTU | Dehumidification: 2.9 pts/hr. | Estimated cooling area – 450 Sq. Ft. | Refrigerant – R32 |...

This through-the-wall LG air conditioner is the best energy efficient air conditioner you could get in 2019 if you have little to no space for it. It has a 10.6 energy efficiency ratio and can work on three cooling or fan-only speeds. In addition, it comes with an easy to clean filter and an alert that lets you now when it needs cleaning.

User RatingBTUUnit SizeCooling Capacity (sq. ft.)
4/59,80024" x 20.1" x 14.4"450


  • Can cool down a room of up to 450 square feet
  • Easy maintenance and cleaning
  • The best energy efficient air conditioner for the money according to customer reviews


  • Quite noisy

7. Kenmore Smart 04277107 Room Air Conditioner


Kenmore Smart 04277107 Room Air Conditioner Works with Amazon Alexa,...
  • Connect Now: Control and monitor on the go with Kenmore Smart AC App on your phone or tablet
  • 10,000 BTU cools spaces up to 450 sq. ft. Cord Length : 6 feet. Filter Material : Polypropylene mesh
  • ENERGY STAR Certified. Recommended room size: 300 - 500 square feet

You can operate this model on either the air conditioner, fan, or dehumidifier hose. It has a portable design, so it can be installed quickly in any room. In addition, it comes with a self-evaporation system that further increases its efficiency. This energy efficient portable air conditioner comes with an extendable exhaust hose with a maximum length of 59″ and a window kit, which makes it even more convenient.

User ratingBTUUnit sizeCooling capacity (sq. ft.)
3.8/510,00017" x 13" x 28"300


  • Comes with anti-bacterial filter
  • Uses CFC free refrigerant and lead-free components
  • Recycles moisture to cool air efficiently


  • Works best in smaller areas
  • Inconveniently short exhaust hose

6.Honeywell MN10CESWW Portable Air Conditioner


Honeywell MN10CESWW Environmental Appliance, Rooms Up To 350-450 Sq....
  • Powerful, safe & dependable Cools rooms up to 350-450 sq. ft. Thermal Overload protection for added safety & peace of...
  • Quick installation easy-to-install window venting kit included with adjustable window bracket from 19.9". to 47.25"
  • Easy maintenance Washable Filter designed to protect from dust & hair to extend product life & performance. Filter...

You can mount this air conditioner in any window to enjoy energy efficient cooling. Its thermostat can be set anywhere from 62 to 86 degrees Fahrenheit. It comes with a programmable timer that can be set between 30 minutes and 24 hours in 30-minute increments. All in all, this is the third best energy efficient air conditioner according to ratings and reviews from verified customers.

User ratingBTUUnit sizeCooling capacity (sq. ft.)
4.1/58,00019" x 15" x 14"350


  • 7 different modes
  • Energy star certified to use 15 percent less energy than normal
  • Programmable timing


  • Somewhat noisy

5. GE AEV05LX 17″ Window Air Conditioner


In addition to cooling, this air conditioner also features a clean air ionizer that removes pollen and other impurities from the air, making it the best energy efficient air conditioner for those who suffer from allergies or other respiratory afflictions. It easily mounts on any window, can plug into a standard 115V electrical outlet, and has a 11.3 energy efficient ratio.

User ratingBTUUnit sizeCooling capacity (sq. ft.)
4.1/510,00021" x 19" x 14"450


  • Eco setting for extra efficiency
  • Cools quickly
  • Quite affordable


  • Remote control only works from close range
  • Slightly inaccurate thermostat

Tip: If you’re looking for a low-profile air conditioner, make sure to check out our article on the best low profile air conditioners of 2019.

4. LG LP0817WSR 115V Portable Air Conditioner

LG LP0817WSR 8,000 BTU White Portable Air Conditioner - Rooms up to...
  • Cools up to 200 Sq. Ft: Stay cool and comfortable when Mother Nature turns up the heat! This 8,000 BTU (5,500 BTU –...
  • Oscillating air discharge: Inclined top air discharge swings up and down to sweep air evenly throughout the room,...
  • Installation kit included: Slide-together window bracket has click-lock connection point for exhaust hose. Other end...

Most of the people who have tried this air conditioner agree that it is the top choice if you are looking for the best energy efficient air conditioner for home use. This compact air conditioner mounts in the window easily and keeps your home cool without wasting electricity.

User ratingBTUUnit sizeCooling capacity (sq. ft.)
4.1/55,00016" x 15" x 12"150


  • Two-way air direction
  • Dehumidifies at 1.1 pints per hour
  • Very quiet while the fan runs


  • Not ideal for larger spaces

3. GE AEM05LX 19″ Window Air Conditioner 


With an energy efficiency ratio of 11.3, you can enjoy a nice, cool home without using excessive amounts of energy. The four functions on this AC include cooling, fan, energy saver, and dehumidification. In addition, this unit comes with a magnetic remote control that can be placed on the unit and that also has braille, making it the best energy efficient air conditioner for the visually impaired.

User ratingBTUUnit sizeCooling capacity (sq. ft.)
4.2/512,00020" X 14" x 20"550


  • Braille for visually impaired
  • Magnetic remote control for convenient programming
  • Electronic control panel
  • Easy to install


  • Unit may be a bit loud

2.Black + Decker 10000 BTU Portable Air Conditioner Unit

Black + Decker BPACT10WT Portable Air Conditioner, 10,000 BTU
  • QUIET & POWERFUL - Our 10,000 BTU compact air conditioner (16.5 x 11.5 x 26 in,) will keep you cool and comfortable all...
  • PERFECT FOR SMALL ROOMS - This floor-standing portable AC unit provides steady, fast, effective cooling for rooms 150 -...
  • SIMPLE & QUICK TO INSTALL – Just roll this portable air conditioner with wheels into any room with a double hung or...


Koldfront’s air conditioner is energy star rated because it has a special energy saver mode to reduce power usage. You can set the thermostat anywhere between 62 and 86 degrees Fahrenheit. All in all, this is the second best energy efficient air conditioner on the market according to ratings and reviews from verified customers.

User ratingBTUUnit sizeCooling capacity (sq. ft.)
4.3/510,00014" x 19" x 21"450


  • Also dehumidifies
  • Three fan speeds
  • LED alert for filter change
  • Remote control included


  • Only dehumidifies smaller areas
  • Noisy startup

1.Frigidaire FFRE0533S1 5,000 BTU 115V Window-Mounted Mini-Compact Air Conditioner


Frigidaire 5,000 BTU 115V Window-Mounted Mini-Compact Full-Function...
  • 2016 energy star: 12.2 energy efficiency Ratio (EER)
  • 5,000 BTU mini-compact air Conditioner for window-mounted installation, Dehumidification up to 1.1 pints per hour
  • Quickly cools a room up to 150 sq. Ft, Cabinet Height: 12", Cabinet Depth (w/ Front): 15-1/4", Cabinet Depth: 13"

This product is the most energy-efficient air conditioner of this year and the best part is it can be used to either chill or warm a room. It can be installed in either a window or a wall for extra convenience and space. It comes with a remote control and a 24-hour timer. It features 3 fan speeds and also has a LED alert that lets you know when to change the filter.

User ratingBTUUnit sizeCooling capacity (sq. ft.)
4.6/518,00017" x 26" x 29"1,000


  • Impressive capacity
  • Sleek and unobtrusive appearance
  • 11.2 energy efficient ratio
  • Three cooling modes


  • Not budget-friendly
  • Difficult installation because of its large size


When you get the right energy efficient air conditioning unit, you can choose the ideal combination of cooling power, appearance, and environmentally-friendly features. According to our research, the absolute best energy efficient air conditioner is the one from Friedrich Chill series as it is a well-made, reliable product with useful features.

Have you tried any of the air conditioners on our list? Comment below to let us know which one is your favorite and which ones you had trouble with!

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