Best Energy Efficient Air Conditioners – Top 7 Picks and Reviews 2020

We took a look the consumer reviews and found the best of the best using data-driven technology.

Here’s a look at the best Energy Efficient Air Conditioners

Bestseller No. 1
COSTWAY Portable Air Conditioner 8000 BTU with Remote Control, Energy Efficient for Rooms Up to 230...
  • ❄️【Multiple Function Modes and Two Fan Speeds: 】This portable air conditioner offers cooling, dehumidifying, fanning and sleeping modes to meet various needs of users. Under the fan mode, there are 2 fan speeds accessible, and you can set the high or low speed as you wish.
  • ❄️【Optional Temperature Setting Range and Units:】Like most air conditioners, the temperature settings of this portable air conditioner range from 60℉ to 86℉. The temperature display data can be switched between Celsius and Fahrenheit, the default is Celsius, but you can choose the unit that you are familiar with.
  • ❄️【Intelligent 24hr Timer and Wide Coverage Area:】There is a 24-hour programmable timer, allowing the air conditioner unit to shut down automatically once reaching the usage time. The compact 8000 BTU/H air conditioner unit delivers fast, effective cooling for spaces up to 230 Sq.Ft in home, office, cabin or camper.
  • ❄️【Temperature Sensor and Water Full Indication:】Featuring a temperature sensor to sense the temperature changes, the air conditioner will stop working and keep the current temperature to save energy. This air conditioner is designed with a water-full control and warning, keeping your floor or carpet from getting wet.
  • ❄️【Four Easy Moving Casters and Remote Control:】At the bottom of the air conditioner, there are four all-direction casters, allowing it to roll freely from room to room. It's worth mentioning that the air conditioner features a modern design that everyone loves, the remote control, that allowing you to set it up conveniently.
Bestseller No. 2
COSTWAY 10000 BTU Portable Air Conditioner with Remote Control, Energy Efficient for Rooms Up to 400...
  • ❄️【User-oriented Multiple Functions Modes: 】This portable air conditioner offers cooling, dehumidifying, fanning and sleeping modes to meet various needs of users. In sleeping mode, this air conditioner will become quiet (Noise≦52dB). It’s able to maintain the temperature while you are sleeping.
  • ❄️【Convertible Fan Speed and All-day Timer:】Under the fan mode, there are 2 fan speeds accessible, and you can set the high or low speed as you wish. There is an energy saving 24-hour programmable timer, allowing the air conditioner unit to shut down automatically once reaching the usage time.
  • ❄️【Strong Air Flow Rate and Wide Coverage:】The compact 10000BTU/H air conditioner unit delivers fast, effective cooling for spaces up to 400 Sq.Ft in home, office, cabin or camper. It comes with a strong air flow rate of 300m3/h that ensures air circulation and replaces with the outdoor fresh air in a few minutes.
  • ❄️【Water Full Warning and Long Drain Hose:】Among various protection functions, this unit is designed with a water-full control and warning, keeping your floor or carpet from getting wet. The drain hose provided is long with a length of 10ft, allowing you to drain the water to the bathroom easily.
  • ❄️【Easy Moving Casters and Remote Control:】At the bottom of the air conditioner, there are four all-direction casters, allowing it to roll freely from room to room. It's worth mentioning that the air conditioner features a modern design that everyone loves, the remote control, that allowing you to set it up conveniently.
Bestseller No. 3
Ivation Extra Large Evaporative Cooler | Portable Energy-Efficient Swamp Cooler with 4-Speed Fan,...
  • POWERFUL REFRESHMENT FOR ANY HOT SPACE | Home Swamp Cooler Reduces Emanating Temperature by 10° to 15°F, Comfortably Cooling & Humidifying Your Immediate Environment Up to 269 Square Feet | Perfect for Hot, Dry, Arid Climates in the American Southwest, Midwest or Any Region with Less Than 60% Humidity
  • -ENERGY-EFFICIENT EVAPORATIVE COOLING | Green Technology Uses Up to 10X Less Energy Than Comparable Portable Compressor-Style Air Conditioners & Requires No Complex Installation or Drainage | Hot Air is Pulled Into the Unit Through Moistened Pads, Then Recirculated Back Into Room for Low-Cost Cooling at 2,400 CMH
  • Give You Ultimate Control Over Your Climate! | Unit Includes Built-In 8-Hour Timer, 4-Speed Fan, Oscillating Swing, Unique Natural Breeze Mode & LED Indicator Lights for Current Selection | Easily Change Settings from Afar Via Handheld Remote Control
  • LOW-MAINTENANCE REMOVABLE RESERVOIR | Fill With Ice-Cold Water to Enjoy a Cool, Continuous Breeze for Up to 11 Hours! | 6.9-Gallon Tank Fills Through the Top Tray or Bottom Drawer for Effortless Operation | Use the Integrated Level Indicator Window to See When Water is Low & Pull Out the Reservoir for Stress-Free Cleaning
  • SUPER PORTABLE MULTIFUNCTIONAL DESIGN | Lightweight, Compact Unit with Hideaway Power Cord is Perfect for Home, Apartment, Patio, RV, Storage & Travel | Use it as an Everyday Fan, Humidifier or Clean, Eco-Friendly, Freon-Free AC to Keep You Comfy All Season Long | ETL Certified for Safety & Quality Performance
Bestseller No. 4
Della 6000 BTU Window Air Conditioner 690W, 110V/60Hz, 12.2 (EER) Energy Star Efficient Cooling...
  • HIGH PERFORMANCE - 6000 BTU, 690W, 115V/60Hz, LCDI Power Supply and Energy Star Rated at 12.2 Energy Efficiency Ratio (EER). Makes it a High Energy Saving and Efficient Compact Window AC. Unit Also Works as a Dehumidifier with a Dehumification Capacity of 46 Pint Per Day.
  • QUIET OPERATION - Smooth Air Flow - 180 m3/h (Low), 210 m3/h (Medium), and 240 m3/h (High) Fan Speed with only 51 dB(A) Low 53 dB(A) Medium, and 55 dB(A) High Speed, it's almost about the sound level of an average conversation between two person in a quiet room. Very Easy to Operate, Simply Set it and Forget it.
  • FEATURES - Variable Temperature Setting from 61℉ - 88℉. All Functions can be set on LED Digital Display or Remote Control: Sleep Mode, Fan Speed Selection, 24 Hour Timer, ECO Mode, Auto Mode, and Fan Only. Washable and Reusable Air Filter Can be Easily Slide Out and Can be Easily Washed with Warm Water and Dish Soap or Vacuum Cleaner for Best Performance. Please Make Sure Filter is Dry Thoroughly Before Reinstalling).
  • EASY INSTALLATION - Unit Installs Easily without Significant Modification to the Existing Window Frame. Fits Windows from 23" to 36" Wide and Minimum Height of 14.5". Complete Mounting Accessories are Included in Package. Pilot Holes are Highly Recommended for some window frames. Please Check Instruction Manaul for More Detail.
  • COVERAGE AREA - Compact Size Measures at only 19"W x16"D x14"H and Weight only 53 Pounds, Unit is able to Cools up to 250 Sq. Ft Space. Great Ideal for Small Rooms, Storage Rooms, Computer Server Rooms, Apartments, Condos, Trailer Homes and More!
SaleBestseller No. 5
Frigidaire Energy Star 12,000 BTU 115V Window-Mounted Compact Air Conditioner with Full-Function...
  • Your purchase includes One Frigidaire FFRE103WAE Window Air Conditioner of 12,000 BTU
  • Air conditioner dimensions: 19” W x 14” H x 21” D | Cabinet – 14” H x 21” D (with front) | Weight – 70 lbs. | Window – 15” H x 23”-36” W | EER – 12 | Noise level – Low: 57, Med: 58, High: 59 | Pints per hour – 3
  • Features three different fan speeds for more cooling flexibility
  • The built-in timer allows you to preset the unit to turn on and off in half-hour increments
  • Certifications & Approvals – ENERGY STAR Certified | Safety Certification: UL/CUL | ETL Listed – No | ADA Compliant - All Brands – No | NSF Certified – No
Bestseller No. 6
Keystone Energy Star 5,000 BTU Window-Mounted Air Conditioner with Follow Me LCD Remote Control,...
  • 5,000 BTU air conditioner for window-mounted installation
  • Energy Star efficiency saves you money on your electric bill (12.1 EER)
  • 6.5-ft. LCDI power cord with NEMA 5-15P plug uses standard 115V electrical outlet
  • Cools a room up to 150 sq. ft. with dehumidification up to 1.3 pints per hour
  • Temperature sensing LCD remote control allows you control the temperature from across the room
Bestseller No. 7
MIDEA MAW05M1BWT Window air conditioner 5000 BTU with Mechanical Controls, 7 temperature, 2 cooling...
381 Reviews
MIDEA MAW05M1BWT Window air conditioner 5000 BTU with Mechanical Controls, 7 temperature, 2 cooling...
  • FAST COOLING: 5, 000 BTU window-mounted mini-compact air conditioner is perfect for cooling a room up to 150 square feet. Quickly cools down your home, office, or apartment for maximum comfort
  • EFFORTLESS OPERATION: 7 temperature settings, 2 cooling/2 fan only speeds and 2-way air direction give you the perfect amount of cooling every time
  • EASY INSTALLATION: Install easily with minimal modification to the existing window frame. Suitable for windows 23''-36'' wide and minimum 13'' high. All mounting accessories are included
  • ENERGY-EFFICIENT: Combined Energy Efficiency Rate (CEER): 11. 0. Helps reduce the energy costs
  • WASHABLE FILTER: The reusable and washable mesh filter reduces bacteria, room odors and other airborne particles for a healthier, more comfortable environment