Best Energy Efficient Air Conditioner 2023 [Do NOT Buy Before Reading This!]

If you want to feel comfortable in a room that you are spending time and you do not want to feel hot or cold, the air conditioner is the best solution for you.

Keeping constant temperature has a good reflection on your health. However, the main problem is choosing the appropriate one for your needs.

You do not have to deal with the choice of an appropriate model because we conducted a list of best air conditioners so that you can see which one applies to you.

Most of them come with different cooling and heating capacities, voltage, and energy efficiency.

That is the main reason why we decided to present you best air conditioners and buying guide 2020:

Model NameCapacityEfficiencyPrice
PIONEER 208/230 V (Editor’s Choice)12,000 BTU17.5 EER$$$
hOmeLabs5,000 BTU11.1 EER$
LG LW6017R6,000 BTU$
Senville SENL-09CD9,000 BTU19 EER$$$
Friedrich Chill Series CP10G10B10,000 BTU$$
LG LW8016ER8,000 BTU12.1 EER$
Frigidaire12,000 BTU12.1 EER$$

1. PIONEER 12,000 BTU – Best Air Conditioner with LED Display


Pioneer 12,000 BTU is great for providing heating and cooling to garages, guest houses, or recent additions to your home when retrofitting to a ductless heating and cooling system.

Small but mighty, this wall-mounted mini split air conditioner is rated at 12,000 BTUs per hour when cooling and 12,000 BTUs per hour when heating.

This makes this mini-split heat pump great for small areas and rooms between 350 and 450 square feet in size.

Finally, expanding your home should not break the bank.

For an efficient and cost-effective way of cooling your extra rooms, look to the Pioneer WYS Ductless Wall-Mounted Mini Split Air Conditioner Heat Pump System.


Dual function for cooling and heating as needed
The arctic heating version can heat even at -12°F
LED display and an LCD screened remote control
Cools up to 12,000 BTUs per hour with a 19.5 SEER efficiency
Heats up to 12,000 BTUs per hour with a 10 HSPF efficiency


Should not be used in high humidity

2. HomeLabs 5000 BTU – Best Energy-Efficient Air Conditioner with Seven Cooling Speeds

HomeLabs 5000 BTU

If you wish to get energy-efficient AC for your household, we recommend you to consider HomeLabs 5000 BTU.

You will be able to cool most areas in a matter of minutes by using seven different cooling speeds so that you can enjoy along the hot summer days.

Two-way airflow paired with adjustable high and low fan settings allow you to control the cooling power of this device better.

It has five slats that move approximately 40 degrees left and right, allowing you to also customize the direction of airflow out of the top vent.

It is highly weatherproof and is made to withstand rain and inclement weather without a cover.


Seven different temperature settings
Dual cooling and fan settings
Electric window AC system comes with a lot of extra equipment
Super-fast cool time
Energy Star Certified


Should not be used in the bedroom

 3. LG LW6017R – Best Air Conditioner with Integrated Thermostat

LG LW6017R

The best way to maintain the freshness of your household is by checking out LG LW6017R energy efficient AC.

Apart from cooling, you will be able to use it as a dehumidifier for your household. It can handle approximately 1.8 pints of water in an hour.

Convenient features such as variable-speed fan control and Energy-Saver function allow you to customize your space. It also features a rotary compressor as well as an integrated thermostat that features a temperature range between 60 and eighty-six degrees F.

In addition to keeping your indoor spaces fresh, the unit works in enclosed outdoor areas. Finally, you will be able to maintain the freshness within your household by using this particular AC for your reasons.


Cooling power for spaces 260 square feet
Dual cooling and fan settings
You can choose three different cooling speeds
24-hour on-off timer
Filter alarm function and auto restart


Without deflector

4. Senville SENL-09CD – Best AC with Cross-Flow Technology

Senville SENL-09CD

The best thing about Senville SENL-09CD energy-efficient AC is that you can adjust the temperature in no time. That way, you can distribute the even freshness and enjoy perfect air circulation along the way.

This particular model will provide you the ability to reduce humidity as well to monitor it, which will not affect the overall room temperature. Due to efficient cross-flow technology, you can enjoy in noiseless operation without compromising the cooling and airflow.

You should remember that its turbo function would provide you the maximal heating or cooling output. That way, you can reach a proper temperature as soon as possible.

The system can monitor most abnormal operations so that you can use it for years after purchase. As soon as it finds some error, it will automatically shut it down and provide you the error code so that you can repair it properly.


With Built-In Heat Pump
Minimal Energy Consumption
Complete Climate Control
Rooms sized 100-450 sq. Ft.
Ultra-Quiet Indoor Air Handler


The units require electrical wiring between the units

 5. Friedrich Chill Series CP10G10B – Best Air Conditioner with Energy Star Certification

Friedrich Chill Series CP10G10B

The Friedrich Chill Series CP10G10B AC is the perfect solution that will provide you peace of mind when it comes to energy efficiency. The best thing about it is the Energy Star qualification, which will give you peace of mind along the way.

Due to 24-hour timer, you will be able to program it so that you can reduce the hassle of doing it manually. It comes with three fan speeds as well as four-way airflow controls so that you can program it based on the room size you prefer.

Keep in mind that air filters are antimicrobial and washable, which means that you can maintain them without any additional problem.

It is crucial to mention Entry Guard’s anti-intrusion protection, which will protect it against issues. Therefore, you will be able to use it for years after purchase.

You will get up to 10 thousand BTU’s of cooling power so that you can freshen up the large areas up to five hundred square feet.


Energy-efficient solution
Simple to maintain and install
It comes with auto air sweep feature
You will get three fan and cooling speeds


You should install it next to a window, which is a disadvantage for some users

6. LG LW8016ER – Best AC with Insulation Strips


The first thing you should remember when it comes to LG LW8016ER energy-efficient AC is that it comprises eight thousand BTUs. Therefore, you can use it for the entire living area, especially if you live in open lofts.

According to the manufacturer, it can efficiently cool approximately 350 square feet, which is perfect for additional comfort and reduced energy bills. It requires a 115v plugin, which is unique when compared with other AC units that require approximately 220V.

However, you should know that it features the same outlet as you are using for the washing machine or oven. The best thing about it is insulation strips and side curtains that will prevent common leaking problems that come with other air condition units.

Remember that it features Energy Start certification, which will reduce your energy bills and provide you the environment-friendly efficiency.


It can reach up to eight thousand BTUs
You will get the energy-saving feature that will maintain proper temperatures
Window-mounted installation
It comes with insulation strips


Noisy operation when compared with other ACs within the price range

7. Frigidaire Cool Connect – Best AC with Wi-Fi Connectivity

Frigidaire Cool Connect

If you wish to get the air conditioner that comes with Wi-Fi control, you should get Frigidaire Cool Connect. Remember that it comes with features that will make your living space both comfortable and cool.

We have mentioned above that you can quickly turn it on and off remotely by using a Wi-Fi connection and native app. Apart from turning it on/off, you can change fan speeds and temperatures based on your preferences.

Due to push notifications, you can easily detect whether filter requires maintenance or change. Keep in mind that this is an important consideration that will increase its longevity.

The scheduling ability will help you reduce the energy bills and create customized schedules. It can easily handle rooms up to 550 square feet. You will only need a smart device or mobile phone to control it along the way.


Energy-efficient solution when compared with other AC units
It features energy purifier that will remove allergens
Wi-Fi connectivity
You will get a long cord for additional convenience


It is not efficient as other units we’ve mentioned above

Best Air Conditioner Buying Guide

Why is Smart to Go Efficient?

It is essential to understand that AC units tend to consume plenty of power if you leave them all day long. That is the main reason why you should find the unit that will help you improve energy efficiency.

Apart from the idea that you will have lower monthly bills, you will not compromise the overall power, which is an important consideration.

What Is Energy Efficiency Ratio (EER)?

You should have in mind that the AC efficiency depends on the EER or energy efficiency ratio. Generally, it is the ratio between power inputs and cooling capacity.

It means that you will be able to cool down your household for an appropriate amount of time so that you can prevent paying large electrical bills.

It is vital to get the highest rating possible so that you can reduce the energy used for cooling your household. However, the ones with higher EER are more expensive, which is something you should remember.

How Do I Determine the Correct BTU Size I Need?

When it comes to power output and size for air conditioners, we are not talking about its dimensions. The measurement unit for cooling capacity includes BTUs or British Thermal Units.

The best way to determine the length of time your room can cool down is by multiplying the width and length of the room your wish to place it. Then, you should multiply that result with 25 BTU, because this particular capacity can handle one square foot.

So if your room is 15 feet wide and 15 feet long, it means that it has 225 square feet. Therefore, you should take 225 square feet and multiply it with 25 BTU, and you will get the minimum capacity that you should purchase.

What Makes an Air Conditioner Energy-Efficient?

Right Size Of Your Room – Size is important for determining whether you will be able to improve overall efficiency. If you choose the largest unit, you will cause issues to your area by making it too cold or damp. On the other hand, small units will require more time to handle the space.

Therefore, you should consider the BTU capacity calculation we’ve mentioned above to determine the exact AC unit you should get.

Programmable Settings – Another important consideration is the ability to program it ahead so that you can prevent unnecessary waste of energy.

Energy Saving Features – You should get whether the AC unit features Energy Star certification. That is an important consideration when getting the one that will prevent hefty monthly bills.


We have presented to you the comprehensive guide on energy-efficient air conditioners. Remember that efficiency depends on numerous factors, which is why you should adequately calculate everything before making up your mind.

At the same time, you need to follow the guide and understand various features to make a quality purchase.

In case you have additional questions, we recommend you to leave a comment, and we will answer you on short notice. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.

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