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10 Best Air Conditioners 2026 in the United States
#1
Winner
Daikin 18,000 BTU (9K + 15K) 21SEER2 2-Zone Mini Split, Air Conditioner Heat Pump R-32 System with Maxwell 15 ft. Installation Kit and Wall Mounting Bracket
The Daikin 18,000 BTU 2-Zone Mini Split is designed to provide versatile cooling and heating for two separate areas, making it ideal for homes needing personalized temperature control in different rooms without ductwork. Its cooling capacity of around 18,000 BTU (split into 9,000 and 15,000 BTU zones) is well-suited for spaces up to roughly 1,150 square feet, handling moderate-sized rooms efficiently. The system boasts a high Energy Efficiency Ratio (EER) and Seasonal Energy Efficiency Ratio (SEER of 21), which means it uses electricity efficiently—helping reduce energy bills. Operating quietly at just 24 decibels, it won’t disturb your daily life or sleep, a definite plus for bedrooms or living areas.
#2
Senville LETO Series Mini Split Air Conditioner Heat Pump, 12000 BTU 110/120V, Inverter, Works with Alexa, SEER2 20.8, 1 Ton, White
The Senville LETO Series Mini Split Air Conditioner Heat Pump offers a substantial cooling capacity of 12,000 BTU, making it suitable for cooling medium-sized rooms. One of its standout features is the high Seasonal Energy Efficiency Ratio (SEER) of 20.8, which indicates it operates efficiently and could help reduce electricity bills. The inclusion of a DC Inverter further enhances its energy efficiency and performance consistency.
Rating
8.5
Cooling Capacity (BTU)
Energy Efficiency Ratio (EER)
Noise Level
Most important from
7969 reviews
#3
Midea 12,000 BTU Smart Inverter Air Conditioner Window Unit with Heat and Dehumidifier – Cools up to 550 Sq. Ft., Energy Star Rated, Quiet Operation, Electronic Controls, Remote Control, White
The Midea MAW12HV1CWT EasyCool Smart Inverter Air Conditioner offers a powerful cooling capacity of 12,000 BTU, making it suitable for large rooms up to 550 square feet. Its multi-season functionality is a standout feature, as it provides both cooling and supplemental heating, though the heat pump is limited when outdoor temperatures drop below 41°F. The unit is energy efficient, boasting an Energy Efficiency Ratio (EER) of 13.3 and Energy Star certification, which can save up to 35% on energy costs compared to standard units.
Rating
8.2
Energy Efficiency Ratio (EER)
Noise Level
Additional Features
Most important from
18478 reviews
Top 10 Best Air Conditioners 2026 in the United States
#1
Winner
Daikin 18,000 BTU (9K + 15K) 21SEER2 2-Zone Mini Split, Air Conditioner Heat Pump R-32 System with Maxwell 15 ft. Installation Kit and Wall Mounting Bracket
Daikin 18,000 BTU (9K + 15K) 21SEER2 2-Zone Mini Split, Air Conditioner Heat Pump R-32 System with Maxwell 15 ft. Installation Kit and Wall Mounting Bracket
Cooling Capacity (BTU): 18000 British Thermal Units
Energy Efficiency Ratio (EER): High
Noise Level: 24 Decibels
Type of Air Conditioner: Split System
Additional Features: Heating & Cooling, Inverter, Multi-Zone, Auto-Defrost
Chosen by 1485 this week
Senville LETO Series Mini Split Air Conditioner Heat Pump, 12000 BTU 110/120V, Inverter, Works with Alexa, SEER2 20.8, 1 Ton, White
Senville LETO Series Mini Split Air Conditioner Heat Pump, 12000 BTU 110/120V, Inverter, Works with Alexa, SEER2 20.8, 1 Ton, White
Cooling Capacity (BTU): 12000
Type of Air Conditioner: Mini Split
Additional Features: Alexa Enabled, DC Inverter, Heat Pump
Midea 12,000 BTU Smart Inverter Air Conditioner Window Unit with Heat and Dehumidifier – Cools up to 550 Sq. Ft., Energy Star Rated, Quiet Operation, Electronic Controls, Remote Control, White
Midea 12,000 BTU Smart Inverter Air Conditioner Window Unit with Heat and Dehumidifier – Cools up to 550 Sq. Ft., Energy Star Rated, Quiet Operation, Electronic Controls, Remote Control, White
Cooling Capacity (BTU): 12000
Energy Efficiency Ratio (EER): 13.3
Noise Level: 45 dBA
Type of Air Conditioner: Window
Additional Features: Inverter Compressor, Remote, WiFi, Heating, Cooling, Dehumidifier
LG 24,500 BTU Smart Window Air Conditioner, 230/208V, Cools Room up to 1560 Sq. Ft. for Bedrooms, Living Room, Apartments, with Remote, 3 Fan Speeds, 24-Hour Timer, White
LG 24,500 BTU Smart Window Air Conditioner, 230/208V, Cools Room up to 1560 Sq. Ft. for Bedrooms, Living Room, Apartments, with Remote, 3 Fan Speeds, 24-Hour Timer, White
Cooling Capacity (BTU): 24500 BTU
Noise Level: 61 dB
Type of Air Conditioner: Window
Additional Features: Filter light, Remote, Silent mode, WiFi, Voice
TOSOT 16000 BTU GO Cool RV Air Conditioner, Non-Ducted Camper Rooftop AC Unit with Heat Pump, WiFi and Remote Control, Quiet Air Conditioner for Campers & Trailers, White
TOSOT 16000 BTU GO Cool RV Air Conditioner, Non-Ducted Camper Rooftop AC Unit with Heat Pump, WiFi and Remote Control, Quiet Air Conditioner for Campers & Trailers, White
Cooling Capacity (BTU): 15000 BTU
Energy Efficiency Ratio (EER): 8.5
Noise Level: 52 dB
Type of Air Conditioner: Non-ducted rooftop unit
Additional Features: Fast Cooling, Remote, WiFi
Related Products
Amazon Basics 5000-BTU Small Window Air Conditioner, Up to 150 Sqf, Window AC Units with Cool and Fan Functions, Washable Filter, Adjustable Window Kit, Intuitive Mechanical Controls, White
Amazon Basics 5000-BTU Small Window Air Conditioner, Up to 150 Sqf, Window AC Units with Cool and Fan Functions, Washable Filter, Adjustable Window Kit, Intuitive Mechanical Controls, White
Cooling Capacity (BTU): 5000 BTU
Noise Level: 56 dB
Type of Air Conditioner: Window
Additional Features: 3-in-1, Temp Control, Washable Filter
3 Ton Goodman 14.5 SEER2 R-32 Air Conditioner Only Split System (GLXS4BA3610 AMST36CU1300)
3 Ton Goodman 14.5 SEER2 R-32 Air Conditioner Only Split System (GLXS4BA3610 AMST36CU1300)
Cooling Capacity (BTU): 36000 British Thermal Units
Noise Level: 67 Decibels
Type of Air Conditioner: Split System
Additional Features: Fast Cooling
Goodman 4 Ton 14 SEER Package Air Conditioner System R-410a GPC1448H41
Goodman 4 Ton 14 SEER Package Air Conditioner System R-410a GPC1448H41
Cooling Capacity (BTU): 48000
Energy Efficiency Ratio (EER): 14
Type of Air Conditioner: packaged, ductless
Additional Features: ductless
Senville LETO Series Mini Split Air Conditioner Heat Pump, 9000 BTU 110/120V, Inverter, Works with Alexa, SEER2 21.5, White
Senville LETO Series Mini Split Air Conditioner Heat Pump, 9000 BTU 110/120V, Inverter, Works with Alexa, SEER2 21.5, White
Cooling Capacity (BTU): 9000 BTU
Noise Level: 25 dB
Type of Air Conditioner: Mini-Split
Additional Features: Alexa Enabled, inverter heat pump
#10
Goodman 3.5 Ton 15.2 SEER2 Heat Pump System with Multi-positional Air Handler R32 GLZS4BA4210 AMST42CU1300. Free Thermostat included.
Goodman 3.5 Ton 15.2 SEER2 Heat Pump System with Multi-positional Air Handler R32 GLZS4BA4210 AMST42CU1300. Free Thermostat included.
Cooling Capacity (BTU): 42000 BTU
Noise Level: 72 dB
Type of Air Conditioner: Split System
Additional Features: Air Purification Filter
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Buying Guide for the Best Air Conditioners
Choosing the right air conditioner can significantly impact your comfort and energy bills. The key is to understand your needs and match them with the right specifications. Here are some important factors to consider when selecting an air conditioner.Cooling Capacity (BTU)Cooling capacity, measured in British Thermal Units (BTU), indicates how much heat an air conditioner can remove from a room per hour. This is crucial because an air conditioner with too low a BTU rating won't cool the room effectively, while one with too high a rating will cool the room too quickly without removing humidity, leading to a clammy feeling. To choose the right BTU, consider the size of the room: small rooms (up to 150 sq. ft.) need around 5,000-6,000 BTU, medium rooms (150-300 sq. ft.) need 7,000-8,000 BTU, and large rooms (300-450 sq. ft.) need 10,000-12,000 BTU. For very large spaces, you may need 14,000 BTU or more.
Energy Efficiency Ratio (EER)The Energy Efficiency Ratio (EER) measures how efficiently an air conditioner uses energy to cool a room. A higher EER means better energy efficiency, which can lead to lower electricity bills. EER is calculated by dividing the BTU rating by the unit's wattage. Look for air conditioners with an EER of 10 or higher for good efficiency. If you prioritize energy savings and environmental impact, aim for the highest EER you can find within your desired cooling capacity.
Noise LevelNoise level, measured in decibels (dB), indicates how loud the air conditioner will be when operating. This is important for maintaining a comfortable and quiet environment, especially in bedrooms or living rooms. Air conditioners typically range from 40 dB (quiet) to 60 dB (moderate noise). If you are sensitive to noise or plan to use the unit in a quiet space, look for models with a noise level of 50 dB or lower.
Type of Air ConditionerThere are several types of air conditioners, including window units, portable units, split systems, and central air conditioning. Window units are easy to install and suitable for single rooms. Portable units offer flexibility and can be moved between rooms but may be less efficient. Split systems provide efficient cooling for multiple rooms and are quieter but require professional installation. Central air conditioning is ideal for cooling an entire home but involves higher installation costs. Choose the type based on your cooling needs, installation preferences, and whether you need to cool one room or multiple areas.
Additional FeaturesModern air conditioners come with various additional features that can enhance convenience and comfort. These may include programmable timers, remote controls, sleep modes, energy-saving modes, and smart connectivity for control via smartphone apps. Consider which features are important to you. For example, a programmable timer can help you save energy by cooling the room only when needed, while smart connectivity allows for remote operation and monitoring.