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10 Best 12000 BTU AC Window Units 2025 in the United States

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Our Top Picks

#1

Winner

Frigidaire 12,000 BTU Window Air Conditioner with Remote Control, Cools Up to 550 Sq. Ft., Quiet Operation, Eco Mode, 3 Fan Speeds, Auto Restart, White

Rating
9.7
Chosen by1,228
BTU Rating
Energy Efficiency Ratio (EER)
Noise Level

Most important from
17124 reviews

BTU Rating
The unit cools effectively across multiple rooms, handling medium to large spaces with ease.
Energy Efficiency Ratio (EER)
Energy efficiency is decent, though it lacks an Energy Star rating for top savings.
Noise Level
Noise levels are generally low and unobtrusive for a unit of this size.
Installation Type
Installation fits standard windows but the unit's weight may require assistance.
Additional Features
Additional features like a 24-hour timer and dry mode enhance convenience and comfort.

The Frigidaire 12,000 BTU Window Air Conditioner is designed to cool rooms up to 550 square feet, making it suitable for medium to large spaces like living rooms or larger bedrooms. It offers customizable cooling with six-way directional airflow and three fan speeds, allowing you to adjust comfort easily. The remote control and filter light reminder simplify use and maintenance, helping keep the unit running efficiently. Noise is relatively low at 57 dB, which is fairly quiet for its size, so it won't be too distracting during use.

Energy efficiency is decent with an EER of 10.9, and the Eco and Sleep modes help reduce power consumption, although it doesn't have an Energy Star rating, so it might not be the most cost-saving model over time. Installation is straightforward since it fits standard windows and includes a window kit. The washable dust filter is a plus for easy upkeep, but the unit weighs around 63.5 pounds, so installation might require some help. Its dimensions are typical for a 12,000 BTU unit, so ensuring your window can accommodate it is important.

The additional features like a 24-hour timer and dry mode add convenience and comfort, especially in humid conditions. The one-year warranty is standard, giving basic protection. This Frigidaire model is a solid choice if you want reliable, fairly quiet cooling with useful features, though it may not be the best pick if you prioritize top-tier energy savings.

Rating
9.7
Chosen by1,228
BTU Rating
Energy Efficiency Ratio (EER)
Noise Level

Most important from
17124 reviews

BTU Rating
The unit cools effectively across multiple rooms, handling medium to large spaces with ease.
Energy Efficiency Ratio (EER)
Energy efficiency is decent, though it lacks an Energy Star rating for top savings.
Noise Level
Noise levels are generally low and unobtrusive for a unit of this size.
Installation Type
Installation fits standard windows but the unit's weight may require assistance.
Additional Features
Additional features like a 24-hour timer and dry mode enhance convenience and comfort.
#2

LG 12,000 BTU Window Air Conditioner, 115V, Cools 550 Sq.Ft. for Bedroom, Living Room, Apartment, Quiet Operation, Electronic Control with Remote, 3 Cooling & Fan Speeds, Auto Restart, White

Rating
9.4
Noise Level
Additional Features
Dimensions and Weight

Most important from
16782 reviews

Noise Level
The unit performs very well and is relatively quiet, with the performance meeting expectations.
Additional Features
The energy-saving mode is excellent, allowing the fan to shut off with the cooling compressor, which helps in maintaining a comfortable temperature without constant noise.
Dimensions and Weight
The unit's packaging is strong, but due to its heavy weight, there might be minor cosmetic damage during transit, so it's advisable to test the unit before installation.

The LG 12,000 BTU Window Air Conditioner is designed to cool spaces up to 550 square feet, making it suitable for medium-sized rooms like bedrooms, living rooms, and apartments. With a BTU rating of 12,000, it's powerful enough to maintain comfortable temperatures in these areas.

One of its standout features is the low noise performance, operating at just 52 dB at low mode, ensuring it won't disrupt your sleep or daily activities. The unit also offers multiple fan speeds and an auto-cool feature, allowing you to customize your cooling preferences easily.

The digital control panel and remote control enhance usability, along with the 24-hour timer for energy savings. The inclusion of a filter light reminder, window installation kit, and a slide-out, washable filter simplifies maintenance. However, it should be noted that the unit does not have an Energy Star rating, which may impact its energy efficiency. The SEER rating of 13 is decent but not exceptional.

Rating
9.4
Noise Level
Additional Features
Dimensions and Weight

Most important from
16782 reviews

Noise Level
The unit performs very well and is relatively quiet, with the performance meeting expectations.
Additional Features
The energy-saving mode is excellent, allowing the fan to shut off with the cooling compressor, which helps in maintaining a comfortable temperature without constant noise.
Dimensions and Weight
The unit's packaging is strong, but due to its heavy weight, there might be minor cosmetic damage during transit, so it's advisable to test the unit before installation.
#3

LG 12,000 BTU Smart Window Air Conditioner, 115V, AC Window Unit for Rooms up to 550 Sq. Ft., Perfect for Kitchen or Living Room, Phone & Voice Control, Works with LG ThinQ, Amazon Alexa, Hey Google

Rating
9.2
BTU Rating
Energy Efficiency Ratio (EER)
Noise Level

Most important from
16782 reviews

BTU Rating
The unit cools large rooms effectively while operating quietly, with noise levels comparable to normal conversation that won’t disrupt daily activities or sleep.
Energy Efficiency Ratio (EER)
Energy-saving mode intelligently cycles the fan with the compressor to reduce noise and power use without sacrificing comfort.
Noise Level
The unit cools large rooms effectively while operating quietly, with noise levels comparable to normal conversation that won’t disrupt daily activities or sleep.
Installation Type
Installation requires care due to the unit’s heavy weight and size, making it important to keep the packaging intact and test the unit before full setup to avoid complications.
Additional Features
Remote control via the LG ThinQ app and voice commands adds a convenient smart feature that enhances usability and modern living.
Filter Type
Build quality is good overall, but some units may arrive with minor dents or cosmetic damage from shipping, and occasional issues like a persistent filter light can be encountered.
Dimensions and Weight
Installation requires care due to the unit’s heavy weight and size, making it important to keep the packaging intact and test the unit before full setup to avoid complications.

The LG 12,000 BTU Smart Window Air Conditioner is a solid choice for cooling rooms up to 550 square feet, such as living rooms or kitchens. Its 12,000 BTU rating means it has enough power to cool large spaces effectively. With three fan speeds and a 4-way air deflection, you can customize airflow to suit your comfort. One standout feature is its smart capability: you can control the unit remotely using the LG ThinQ app or with voice commands through Alexa or Google Assistant, which adds convenience if you like managing devices with your phone or smart speaker.

In terms of noise, it operates quietly at about 52 decibels on low, which is similar to a normal conversation, so it won’t be disruptive. The unit also includes handy features like an auto-restart after power outages, a 24-hour timer, and a filter light reminder to help maintain air quality. The included dust filter is easy to clean but is basic compared to more advanced filters you might find on pricier models.

One thing to note is its Energy Efficiency Ratio (EER) of 12, which is decent but not top-tier, meaning it won’t be the most energy-saving option available. It also doesn’t carry the Energy Star certification. Installation is typical for a window unit, including an installation kit, but the unit is fairly heavy at 81 pounds, so having help during setup is a good idea. The dimensions (about 22 x 24 x 15 inches) are standard, so it fits most standard windows, but it's worth measuring your space first. The unit comes with a 1-year warranty, which is typical but not exceptionally long. With strong customer reviews averaging 4.2 stars, many users find it reliable and easy to use. This LG window AC is a good fit if you want a powerful, smart-controlled air conditioner with quiet operation for medium to large rooms, but if energy efficiency or advanced filtration are top priorities, you might want to explore other options.

Rating
9.2
BTU Rating
Energy Efficiency Ratio (EER)
Noise Level

Most important from
16782 reviews

BTU Rating
The unit cools large rooms effectively while operating quietly, with noise levels comparable to normal conversation that won’t disrupt daily activities or sleep.
Energy Efficiency Ratio (EER)
Energy-saving mode intelligently cycles the fan with the compressor to reduce noise and power use without sacrificing comfort.
Noise Level
The unit cools large rooms effectively while operating quietly, with noise levels comparable to normal conversation that won’t disrupt daily activities or sleep.
Installation Type
Installation requires care due to the unit’s heavy weight and size, making it important to keep the packaging intact and test the unit before full setup to avoid complications.
Additional Features
Remote control via the LG ThinQ app and voice commands adds a convenient smart feature that enhances usability and modern living.
Filter Type
Build quality is good overall, but some units may arrive with minor dents or cosmetic damage from shipping, and occasional issues like a persistent filter light can be encountered.
Dimensions and Weight
Installation requires care due to the unit’s heavy weight and size, making it important to keep the packaging intact and test the unit before full setup to avoid complications.

Buying Guide for the Best 12000 BTU AC Window Units

Choosing the right window air conditioning unit is crucial for maintaining a comfortable living space. When selecting a 12000 BTU window AC unit, it's important to consider various specifications to ensure it meets your cooling needs effectively. Understanding these key specs will help you make an informed decision and find the best fit for your home or office.
BTU RatingBTU stands for British Thermal Units, and it measures the cooling capacity of the air conditioner. A 12000 BTU unit is suitable for cooling rooms up to 550 square feet. It's important to choose a unit with the right BTU rating for your room size to ensure efficient cooling. If the unit is too powerful for the space, it may cycle on and off too frequently, leading to inefficiency and higher energy costs. Conversely, a unit that's too small won't cool the room effectively.
Energy Efficiency Ratio (EER)The Energy Efficiency Ratio (EER) indicates how efficiently the air conditioner uses energy. It's calculated by dividing the BTU rating by the power consumption in watts. Higher EER values mean better energy efficiency, which can lead to lower electricity bills. Look for units with an EER of 10 or higher for optimal efficiency. If you prioritize energy savings, choose a unit with a higher EER.
Noise LevelNoise level is measured in decibels (dB) and indicates how loud the air conditioner will be when operating. Lower dB values mean quieter operation, which is important for maintaining a peaceful environment, especially in bedrooms or living rooms. Units typically range from 50 to 60 dB. If you are sensitive to noise or plan to use the AC in a quiet space, opt for a unit with a lower noise level.
Installation TypeWindow AC units can be installed in different ways, such as through a standard window or a wall sleeve. The installation type affects ease of setup and compatibility with your window or wall. Standard window units are easier to install and remove, while wall sleeve units may require more permanent installation. Choose the installation type that best suits your space and installation preferences.
Additional FeaturesAdditional features can enhance the functionality and convenience of your air conditioner. Common features include remote control, programmable timer, sleep mode, and adjustable fan speeds. These features can provide greater control over the unit's operation and improve comfort. Consider which features are important to you and choose a unit that offers them.
Filter TypeThe filter type affects air quality and maintenance. Units typically come with washable or replaceable filters. Washable filters are more cost-effective and environmentally friendly, while replaceable filters may offer better air purification but require regular replacement. If you have allergies or want to ensure clean air, consider a unit with a high-quality filter.
Dimensions and WeightThe dimensions and weight of the unit are important for ensuring it fits in your window and can be installed safely. Measure your window space and compare it with the unit's dimensions to ensure a proper fit. Heavier units may require additional support during installation. Choose a unit that fits your window and can be installed without difficulty.

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