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best 12000 btu air conditioner

Best 12,000 BTU Air Conditioners: Window & Portable AC Units Reviewed

Looking for a reliable 12000 BTU air conditioner to cool a 600 sq. ft. room?

You are in the right place.

With summer basically here, it's time to get a new air conditioner for your place.

To save you time and energy, we have narrowed it down to the 10 best 12,000 BTU air conditioners that ensure excellent performance in any room up to 600 square feet.

What's in This Guide

In this guide, we review the best window and portable AC units for a 12,000 BTU (for rooms up to 600 square feet) application.  

We recommend and review specific models to address the needs of those needing 12,000 BTU models and follow it with a brief buying guide that goes over the numerous factors to consider when buying a 12,000 BTU air conditioner.


Best 12,000 BTU Air Conditioners (Window and Portable Units)

Disclaimer: All links below go to Amazon.com

  1. 1
    Best Overall: MIDEA U Inverter
  2. 2
    Runner-Up: Frigidaire FFRE123WAE
  3. 3
    Quietest Unit: MRCOOL – DIY-12-HP-115B25
  4. 4
    Most Energy Efficient:  TOSOT 12,000 BTU
  5. 5
    Best For An Office: MIDEA MAW12R1BWT
  6. 6
    Best Portable AC: Whynter ARC-12S 12,000 BTU
  7. 7
    Best Ventless / Evaporative AC: BLACK+DECKER BPACT12WT
  8. 8
    Best AC + Heater Combo: Frigidaire FFPH1222U1
  9. 9
    Best Budget Pick: Senville LETO Series
  10. 10
    Best Wi-Fi-Connected AC: Friedrich Chill Premier

best 12000 btu air conditioner
  • MIDEA U Inverter

  • Best Overall

  • 21.97 x 19.17 x 13.46 inches


  • 58.8 pounds

  • Noise Levels:
    42 dB

  • SEER 15


quietest window air conditioner
  • Frigidaire FFRE123WAE

  • Runner-Up

  • 21.5 x 19 x 14.5 inches

  • 67.7 pounds


  • Noise Levels:
    52 dB

  • SEER 12

best 12000 btu air conditioner
  • MRCOOL – DIY-12-HP-115B25

  • Quietest Unit


  • 40 x 35.5 x 17 inches

  • 135 pounds

  • Noise Levels:


    38 dB

  • SEER 22

best 12000 btu air conditioner
  • TOSOT 12,000 BTU Window Air Conditioner

  • Most Energy Efficient

  • 21.4 x 22.8 x 15.8 inches


  • 71.7 pounds

  • Noise Levels:
    69 dB

  • SEER 12


best 12000 btu air conditioner
  • MIDEA MAW12R1BWT

  • Best For An Office

  • 21.89 x 18.98 x 14.65 inches

  • 74.8 pounds


  • Noise Levels:
    54 dB

  • SEER 13

best 12000 btu air conditioner
  • Whynter ARC-12S 12,000 BTU Portable Air Conditioner

  • Best Portable AC


  • 15.5 x 17 x 31 inches

  • 62 pounds

  • Noise Levels:


    52.5 dB

  • SEER 11.1

best 12000 btu air conditioner
  • BLACK+DECKER BPACT12WT

  • Best Ventless / Evaporative AC

  • 17.1 x 13.8 x 28.1 inches


  • 71 pounds

  • Noise Levels:
    53 dB

  • SEER 9.61


best 12000 btu air conditioner
  • Frigidaire FFPH1222U1 Portable Air Conditioners

  • Best AC + Heater Combo

  • 42.1 x 49.2 x 79.5 centimeters

  • 71 pounds


  • Noise Levels:
    52 dB

  • SEER 9.9

best garage air conditioner
  • Senville LETO Series

  • Best Budget Pick


  • 26 x 10.43 x 21.26 inches

  • 66.14 pounds

  • Noise Levels:


    28 dB

  • SEER 19

best 10000 btu air conditioner
  • Friedrich Chill Premier

  • Best Wi-Fi-Connected AC

  • 22 x 20 x 15 inches


  • 73 pounds

  • Noise Levels:
    52 dB

  • SEER 12



1. Best Overall: MIDEA U Inverter

best 12000 btu air conditioner

The best of the lot, this MIDEA U inverter is a powerful air conditioner with an impressive cooling capacity to cover an area of up to 550 sq. ft. It is nicely designed, super energy efficient, and ultra-quiet.

Pros

  • Advanced compressor system.
  • Silent in operation.
  • App control functionality.
  • 35% more energy-efficient than competitors.
  • Aesthetic U-shaped saddle appearance.

Cons

  • Difficult installation.

Our Review

Best Features

Noise Levels

This unit is built with advanced technology and an attractive design to make it stand out from competitors.

With the 12000 BTU cooling capacity, this air conditioner can cool down an area as large as 550 sq. ft. quickly. At 42 dB, it does not generate much noise, so you can comfortably enjoy your night's sleep.

Installation Kit

The installation kit includes all necessary accessories for quick assembly. The U-shaped design allows you to keep your windows open to let the fresh air in whenever required.

It complements the interior of your room and comes with a quick-snap bracket to easily fit inside a window.

Thanks to the DC inverter technology, the unit ensures 35% energy efficiency compared to the traditional air conditioners.

WiFi Connectivity

The best thing about this unit is the Wi-Fi connectivity that allows you to adjust the settings using an app on your smartphone.

It can also be controlled through a home assistant like Alexa or Google Home to mark ease of use.

Limitations & Issues

The only issue with this air conditioner is that the installation can be troublesome. The videos and user manuals are not clear, so you might spend more time on installation than expected.

Specs

Brand: Midea

Dimensions: 21.97 x 19.17 x 13.46 inches

Weight: 58.8 pounds

Color: White

Type: Window AC

Area coverage: 400-600 sq. ft.

Energy Efficiency: 15 SEER

Noise Level: 42 dB


2. Runner-Up: Frigidaire FFRE123WAE

quietest window air conditioner

Next in line is this excellent air conditioner from Frigidaire. This window AC can cover up to 450 sq. ft. and has a SEER rating of 12.

It comes with essential features like sleep mode, dehumidification, and a timer to add value to your money.

Pros

  • Energy-star certified unit.
  • Three fan speeds.
  • Programmable timer to suit your schedule.
  • Remote control technology.
  • Sleep mode and built-in dehumidifier.

Cons

  • Can be a bit loud.
  • High maintenance.

Our Review

Best Features

Fan Speeds

The Frigidaire air conditioner has a great combination of features and looks.It is enough for a 450 sq. ft. area and you can use it in your living room, bedroom, and office.

There are three different fan speeds, including low, medium, and high, to allow cooling flexibility.

It is a standard window AC with a cooling capacity of 12000 BTU. With a SEER rating of 12, this unit is Energy-star certified and provides energy efficiency.

Programmability & Timers

This unit stands out to us for offering additional important features like a timer, sleep mode, and dehumidification.

You can turn on the sleep mode to enjoy maximum comfort at night, plus it is quiet at 52 dB.

The programmable timer allows you to schedule the operation according to your routine, and the unit will automatically turn on or off at the preset time.

Dehumidifier mode

With the built-in dehumidifier, this air conditioner maintains good air quality by capturing dust and allergens from the air. Thanks to the air filter cleaning indicator, you will know when to clean the filters.

Remote Control

Another notable feature is the remote temperature sensor that keeps track of the temperature in the area and displays it on the remote screen.

The unit is remote-controlled so that you can change settings and fan speed even from a distance.  

Limitations & Issues

Though advertised as silent, the unit may get loud after hours of running.

Also, it requires maintenance regularly, compared to some other models out there, to keep the unit functional and to work as intended.

Specs

Brand: Frigidaire

Dimensions: 21.5 x 19 x 14.5 inches

Weight: 67.7 pounds

Color: White

Type: Window AC

Area coverage: 450 sq. ft.

Energy Efficiency: 12 SEER

Noise Level: 52 dB


3. Quietest Unit: MRCOOL – DIY-12-HP-115B25

best 12000 btu air conditioner

This 12000 BTU air conditioner packs the latest features with a robust build in a single unit.

It is one of the quietest units and scores high on energy efficiency, low noise levels, and simple installation.

Pros

  • Sleek and smart design.
  • DIY installation.
  • The quietest air conditioner with 38 dB.
  • Suitable for large rooms.
  • App control and voice control functionality.

Cons

  • Can be a bit expensive.
  • Poor customer service.

Our Review

Best Features

Noise Levels

This split AC is silent and produces only 38 dB sound even at maximum fan speed, making it an excellent choice for bedrooms.

It can cool an area of up to 500 sq. ft. while ensuring record-level energy efficiency. With a 22 SEER rating, it is highly energy-efficient, which can help you cut down on the monthly bills.

Fan Speeds

There are three fan speeds, including low, medium, and high, to choose from as per your preference. The high 358 CFM airflow ensures a homogenous spread of cool air throughout the place.

WiFi Connectivity

Thanks to smart control technology, you can turn the unit on or off and change settings through your smartphone, no matter where you are.

Installation Kit  

The installation is quick and straightforward, and you can do it yourself even with a few technical skills. Also, there is a reliable warranty on this unit to make it a valued purchase.

Limitations & Issues

With advanced features like smart control and superb integration, MRCOOL – DIY-12-HP-115B25 has a hefty price tag. Also, the company doesn’t seem to have the most efficient customer service.

Specs

Brand: MRCOOL

Dimensions: 40 x 35.5 x 17 inches

Weight: 135 pounds

Color: White

Type: Split AC

Area coverage: 500 sq. ft.

Energy Efficiency: 22 SEER

Noise Level: 38 dB


4. Most Energy Efficient:  TOSOT 12,000 BTU Window Air Conditioner

best 12000 btu air conditioner

With the 3-in1 functionality, this TOSOT air conditioner air also features fan-only and dehumidifying modes.

The modern aesthetics complement your interior plus the 12 SEER rating makes it one of the most energy-efficient AC out there.  

Pros

  • Simple and quick installation.
  • Modern design.
  • Energy-star certification.
  • Washable filters and smart temperature control.
  • Digital display and user-friendly.

Cons

  • Poor customer service.
  • May get loud.

Our Review

Best Features

Energy-Saver Mode

With energy star certification and a 12 SEER rating, this unit allows you to enjoy the cool air without worrying about the high energy bills.

The filters are reusable, and the filter cleaning icon will light up to indicate when to clean them.

Dehumidifier

This unit can also work as a fan and dehumidifier. This saves you from the additional cost of purchasing separate equipment.

With a 12000 BTU cooling capacity, this air conditioner works for a 550 sq. ft. of area.

The powerful cooling ability cools down the space quickly. There is a built-in thermostat on the remote that accurately keeps track of the room's temperature.

Installation Kit

When it comes to installation, you do not have to spend much time and effort. The package includes all necessary accessories and a helpful user guide to allow quick installation.

Limitations & Issues

The higher noise levels are the major con associated with this TOSOT air conditioner.

This unit is relatively loud at 69 dB, unlike other high-quality window AC available. Also, there are complaints about customer service being merely average.

Specs

Brand: TOSOT

Dimensions: 21.4 x 22.8 x 15.8 inches

Weight: 71.7 pounds

Color: White

Type: Window AC

Area coverage: 550 sq. ft.

Energy Efficiency: 12 SEER

Noise Level: 69 dB


5. Best For An Office: MIDEA MAW12R1BWT

best 12000 btu air conditioner

Looking for a powerful air conditioner for your office? This Midea unit is ideal for energy-efficient, user-friendly, and silent operation. 

Pros

  • User-friendly and LED display.
  • U-shaped design to minimize noise level.
  • Built-in dehumidifier.
  • Eco mode to ensure energy efficiency.
  • Backed by a one-year warranty

Cons

  • Limited warranty.

Our Review

Best Features

Remote Control

This 12000 BTU air conditioner features a robust body with a beautiful white design that complements the interior of any office. It has an LED display on the front to ensure ease of use. 

Being remote-controlled, you can adjust the settings and make changes to this air conditioner while sitting in your chair.

Fan Speeds 

It can cool down an area up to 550 sq. ft. and circulate the cool air at three different fan speeds. Also, it doubles as a dehumidifier to clean the air.

With a SEER rating of 13, the unit is also energy-efficient. There is an eco-mode to schedule an operation to fit your needs.

Noise Levels

At 54dB, this AC is not loud, making it a suitable addition to your office place. You can continue working without any disturbance or interference in a comfortable environment.

Installation Kit 

MIDEA MAW12R1BWT comes with everything you would need to complete the installation process.

It is considered to be one of the easier ACs for DIY installation. Finally, there is a one-year manufacturer’s warranty on this air conditioner.

Limitations & Issues

The 1-year warranty might be an issue for some. Also, this unit has been said to be made for standard window frames and not aluminum window frames. So, keep that in mind during the installation process.

Specs

Brand: Midea

Dimensions: 21.89 x 18.98 x 14.65 inches

Weight: 74.8 pounds

Color: White

Type: Window AC

Area coverage: 550 sq. ft.

Energy Efficiency: 13 SEER

Noise Level: 54 dB


best 12000 btu air conditioner

The Whynter 12000 BTU air conditioner is a great portable unit and comes with multiple convenient features and energy efficiency. It has a built-in timer and dehumidifier to meet customers' needs. 

Pros

  • Highly portable design.
  • Built-in thermostat.
  • Dehumidification and timer.
  • Eco-friendly with carbon air filters.
  • Three fan speed levels.

Cons

  • No sleep mode.
  • he lights are too bright.

Our Review

Best Features

Dehumidifier Mode

This Whynter unit has a simple, sleek standing design with a caster for easy mobility.

The ARC-12S can cover an area of up to 400 sq. ft. It is also equipped with dehumidifying mode to remove 91 pints of moisture from the air daily and keep a comfortable environment.

Noise Levels

It is relatively quiet and produces only 52.5 decibels, making it suitable for offices and bedrooms.

There is a LED display at the front to make it user-friendly. With complete thermostatic control, the temperature can be maintained from 61° F to 89° F.

Programmability & Timer

Another striking feature is the built-in timer that allows you to schedule the cooling. The unit has a carbon filter and washable pre-filter with CFC-free refrigerant.

Limitations & Issues

Whynter ARC-12S lacks sleep mode to keep you comfortable at night. Also, there are complaints about the display lights being a bit too bright which may cause inconvenience during sleep.

Specs

Brand: Whynter

Dimensions: 15.5 x 17 x 31 inches

Weight: 62 pounds

Color: Platinum

Type: Portable

Area coverage: 400 sq. ft.

Energy Efficiency: 11.1 SEER

Noise Level: 52.5 dB


7. Best Ventless / Evaporative AC: BLACK+DECKER BPACT12WT

quietest portable air conditioner

This BLACK+DECKER air conditioner is a space-efficient and energy-saving way to remain cool on hot days. It is portable and remote-controlled to mark convenience.

Pros

  • Auto evaporation feature.
  • Easy clean filter.
  • Portable and user-friendly.
  • Compact and lightweight design.
  • 24-hour timer.

Cons

  • Single hose system.
  • Can be bit loud.

Our Review

Best Features

Remote Control

BLACK+DECKER air conditioner features a beautiful white body that goes perfectly with modern decor.

This unit combines an air fan, humidifier, and an air conditioner, making it a complete package.

You can adjust the temperature and timer settings with great convenience, thanks to the remote control function.

Programmability & Timers

With an 11.1 SEER rating, the unit offers energy efficiency. There is an LED display on top to allow you to change settings with a single touch. Also, the built-in timer helps you precisely control the temperature to fit your schedule.

Due to its compact design, it does not take much space on the floor and can be used in small rooms.

Another prominent feature is the self-evaporation system that automatically expels moisture. This saves you from the trouble of frequently emptying the water collection tank.

Installation Kit

It is also low-maintenance and requires filter cleaning only twice a month. The installation is pretty simple and it typically comes pre-assembled with plug-and-play operation.  

Limitations & Issues

The primary issue with BLACK+DECKER is that it can be too loud for some people.

This can cause disturbance while you are working. Also, there is only one hose system, due to which the unit is likely to get overheated easily.

Specs

Brand: BLACK+DECKER

Dimensions: 17.1 x 13.8 x 28.1 inches

Weight: 71 pounds

Color: White

Type: Portable

Area coverage: 300 sq. ft.

Energy Efficiency: 9.61 SEER

Noise Level: 53 dB


best 12000 btu air conditioner

The Frigidaire air conditioner also doubles as a heater to keep you warm on cold days.

The sleek design is both compact and highly portable. It is also reliable and silent in performance.

Pros

  • Quiet unit with below 52 dB noise levels.
  • Supplemental heating.
  • Casters for portability.
  • 24-hour built-in timer.
  • One-year warranty.

Cons

  • Doesn’t perform well above 400 sq. ft.
  • Ducts are not insulated.

Our Review

Best Features

Dual Function (Heat + Cool)

The best thing about this unit is that it can work as a supplemental heating source in winter. So, you do not have to purchase separate equipment.

Remote Control

It comes with a remote to allow you to change settings even from a distance. With the sleep mode on, this air conditioner keeps you cool at night without causing any disturbance.

Programmability & Timers

There is a built-in timer to schedule the cooling operation as per your requirements. The installation is super easy, and maintenance does not require any struggle. The filters are easy to clean and attach.

Noise Levels

The control panel is simple and user-friendly. It is also quiet and produces only 52 dB, which is much lower than traditional air conditioners.

Limitations & Issues

While Frigidaire FFPH1222U1 is advertised to cover up to 550 sq. ft.; it is not true. It is suitable for an area below 400 sq. ft. with no problems. Also, the ducts lack insulation which might alter the energy efficiency.

Specs

Brand: Frigidaire

Dimensions: 42.1 x 49.2 x 79.5 centimeters

Weight: 71 pounds

Color: Black

Type: Portable

Area coverage: 550 sq. ft.

Energy Efficiency: 9.9 SEER

Noise Level: 52 dB


9. Best Budget Pick: Senville LETO Series

best 12000 btu air conditioner

If you want to get a reliable air conditioner without breaking the bank, then the Senville unit is a good deal. Modern, sleek, and efficient, this Senville air conditioner is a great addition to any space.

Pros

  • Impressive 19 SEER energy efficiency.
  • Super quiet operation.
  • Comes with a five-year warranty.
  • Available at a reasonable price.
  • Remote-controlled unit.

Cons

  • Airflow is below 300 CFM.

Our Review

Best Features

Dual Function (Heat + Cool)

Packed with inverter technology, this air conditioner also comes with an integrated heat pump to keep you warm and toasty in winters.

Thanks to the Turbo functionality, there is an even distribution of cool air. It can cover up to 450 sq. ft. and ensures silent operation.

Remote Control

It is also equipped with fan-only and dehumidifying modes to mark perfection. The unit can be controlled using a remote to adjust settings conveniently.

With a SEER of 19, this air conditioner is highly energy-efficient, so you can enjoy it with incredibly low running costs. The design is impressive, and it will look great in bedrooms, living rooms, and even offices.

Installation Kit

Senville LETO comes with an installation kit that includes almost everything you need to install it quickly. Plus, it is backed by a five-year manufacturer’s warranty to bring value to your bucks.

Limitations & Issues

The only issue associated with this air conditioner is the relatively low airflow. It can circulate the air below 300 CFM, which might take longer to cool down a place than expected.

Specs

Brand: Senville

Dimensions: 26 x 10.43 x 21.26 inches

Weight: 66.14 pounds

Color: White

Type: Split AC

Area coverage: 450 sq. ft.

Energy Efficiency: 19 SEER

Noise Level: 28 dB


10. Best Wi-Fi-Connected AC: Friedrich Chill Premier

best 10000 btu air conditioner

The powerful and 3-in-1 functionality makes this Friedrich air conditioner a suitable option for covering up to 450 sq. ft. area. It has a compact and easy-to-install design to mark convenience.

Pros

  • Nice aesthetics.
  • Wi-Fi-controlled air conditioner.
  • Built-in ECO mode.
  • Compact and easy installation.
  • 3-in-1 functionality: fan only, dehumidification, cooling.

Cons

  • Is one the expensive side.

Our Review

Best Features

Programmatility & Timers

This unit speaks quality and versatility. This air conditioner's 12000 BTU cooling power can cool a room as large as 450 sq. ft.

The SEER rating of 12 ensures energy efficiency, thereby allowing you to save on monthly bills.

The unit offers 3-in-1 functionality, including three basic modes: cooling, fan-only, and dehumidification.

It is quiet, and the sleep mode allows you to enjoy a sound sleep at night. With the programmable 24-hour timer, this air conditioner would automatically turn on or off at your preset time.

WiFi Connectivity

The most striking feature is the Wi-Fi-controlled operation. This unit allows you to control and change the settings through an app on a smartphone from anywhere. You can customize cooling schedules and get notifications all the time.

Installation Kit

Friedrich Chill Premier can be assembled and installed quickly with the detailed manual guide and accessories.

Overall, it is a great air conditioner that efficiently keeps you cool and comfortable on hot days.

Limitations & Issues

With some advanced features, this air conditioner can be considered, by some, slightly overpriced compared to its competitors.

However, if you have the cash, this unit from Friedrich will perform quite well to justify the price tag.

Specs

Brand: Friedrich

Dimensions: 22 x 20 x 15 inches

Weight: 73 pounds

Color: White

Type: Window AC

Area coverage: 450-550 sq. ft.

Energy Efficiency: 12 SEER

Noise Level: 52 dB


Buying Guide: 12,000 BTU AC

best 12000 btu air conditioner

It is important to consider a couple of factors before purchasing the best 12000 BTU air conditioner to avoid any regret in the future.

To help you out, here is a detailed buying guide that covers everything you need to know.

What Size Room Can a 12,000 BTU Window AC Cool?

A 12000 BTU air conditioner typically covers rooms of areas 400 sq. ft. to 600 sq. ft. Sizing the air conditioners is necessary to make the most of it.

Every 20 BTU cools down one sq. ft as a rule of thumb. Considering this rough estimate, a 12000 BTU model can easily cool down a room as large as 600 sq. ft.

However, if you live in a hot area with maximum sun exposure, it’s better to use a 12000 BTU unit for 400 sq. ft. coverage.  

Features That Matter

BTUs & Room Size

best 12000 btu air conditioner

The BTU capacity primarily depends on the size of the room you want to install the unit in. For example, a 12000 BTU air conditioner is ideally designed to cover a 400 sq. ft. to 600 sq. ft. area.

Type of AC

There are 5 types of AC units you should know about!

Window – Horizontal

Window air conditioners are designed to be permanently installed in the window so you can't move them from room to room.

It is a single unit with all the components enclosed inside and used for cooling larger rooms. This type of air conditioner is easy to install and comes with brackets to close any gaps between the unit and window.

Window - Casement/Sliding/Vertical

These are relatively thinner than the traditional window air conditioner. The installation kit generally includes a narrow panel that can be configured vertically or horizontally according to your requirements.

Portable (Vented)

These units are equipped with casters and handles to allow convenient mobility. However, the free-standing design must be placed near a window to allow the expulsion of hot air from the unit.

This type of AC does not require special installation and offers a plug-and-play operation. Even with the same 12000 BTU capacity, portable air conditioners can cover a maximum area of up to 250 to 300 sq. ft. only.

Ventless / Evaporative

An evaporative air conditioner saves you from the hassle of frequently emptying the condensed water tank.

It automatically converts the liquid into a gas and expels it via an exhaust pipe. This type of AC does not require permanent installation. However, they can be noisy.

Ductless / Mini-Split

Ductless or Mini-Split air conditioners are designed to be installed in rooms without requiring a window or making a hole in the wall.

This type of air conditioner consists of two components; an evaporator and a compressor.

The evaporator is placed inside the room to cool down the interior while the compressor is installed outside. These air conditioners are relatively cheaper and offer 450 sq. ft. coverage.  

Size of Unit vs. Size of Window

consider whether you have a standard window or sliding window. Measure the dimensions of the window and then purchase an air conditioner accordingly.

Installation Kit

Each AC type requires a different installation. It is an important factor to consider especially if you intend to install the unit yourself.

The unit generally comes with an installation kit, including brackets and essential accessories. Follow the step-by-step process mentioned in the user manual to avoid any inconvenience.

Dual Function (Heat + Cool)

best 12000 btu air conditioner

Some models combine cooling and heating modes in a single unit to make it useful year-round.

This dual functionality allows you to stay cool on hot days and enjoy a cool environment. 

Getting an air conditioner with dual functionality can help you save the cost of purchasing separate equipment in the long run.

Noise Level

In general, air conditioners are noisy machines. However, modern units are silent with a lower decibel level.

A 12000 BTU model is likely to produce 52-56 decibels. It is recommended to purchase a unit with a decibel rating below 60.

Mini-split air conditioners are the most silent units and can produce as low as 28 dB, which is merely audible.

Fan Speeds

Most advanced air conditioners also feature a fan-only mode that allows air circulation already present in the room while the compressor is off. There are generally three-speed levels, including low, medium, and high.

Energy-Saver Mode

It is recommended to pick an air conditioner with an energy-saver mode.

The Eco-save mode ensures energy efficiency by reducing the speed of the AC. It also reduces the noise levels and helps you cut down on monthly bills.

Exhaust Switch

The exhaust switch ensures the expulsion of hot air into the outdoors. It also helps remove smoke or foul smell to keep the environment comfortable and pleasant.

Dehumidifier Mode

Always check whether an air conditioner has a built-in dehumidifier or not.

It is important to remove moisture from the air and maintain good air quality. This feature proves helpful, especially if you live in a humid environment.

Remote Control

The remote control functionality is a must to avoid the trouble of standing up to change the fan speed or lower the temperature.

A remote control allows you to adjust the settings without getting up from the couch.

Nowadays, some remote controls have a built-in temperature sensor to keep track of room temperature.  

Wi-Fi Connectivity

This feature gives you the most control over your air conditioner. It allows you to control the unit through an app on your smartphone.

Wi-Fi air conditioners also allow you to customize the schedules and operations throughout the week.

Programmability & Timers

A built-in programmable 24-hour timer allows you to manage the active time of your AC.

The unit will automatically turn on or off at the desired time. For example, you can set it to turn on a half-hour before you get home or turn it off in the middle of the night after you sleep.

Installing a Window AC Unit

best 12000 btu air conditioner

Keep these pointers in mind when installing a Window AC unit:

  • Measure the size of your window and mark its center.
  • Prepare the window by installing the weather strips provided by the manufacturer. This will prevent the air from getting in through the tiny cracks or gaps.
  • Now carefully slide the side panels on the air conditioner and secure them with the provided screws.
  • Lift the unit and place it in the window. Close the window tightly so the window sash perfectly sits on the unit.
  • Take the L-bracket to secure the window sash in place. It will prevent the window sash from being pushed up accidentally.
  • Extend the initially installed panels to the window sash and secure them using screws.
  • Fill the gaps using the insulation foam.
  • Plug in the unit.

Window AC Maintenance

Regular care and maintenance of your window AC is essential to maximize its performance and deficiency. Clogged air filters are unable to circulate air efficiently.

Clean them using warm water and mild detergent at least once a month. If the filters must be replaced, make sure to replace them every three months.

The evaporator and condenser coils also need cleaning at least once a year to upkeep the performance capabilities. Inspect the fins on both evaporator and condenser coils every once in a while.

They are likely to get covered with dust and dirt over time. Clean them using warm water and get a fin comb to straighten the bent fins.

It is also recommended to store the air conditioner in a dry, cool space with a cover through the cold days to make it last longer and perform better.


Frequently Asked Questions

best 12000 btu air conditioner

What size room will a 12000 BTU air conditioner cool?

A 12000 BTU air conditioner is ideally designed to offer 400 to 600 square feet of coverage. However, if you live in a humid environment, it can cover a 400 sq. ft. area.

How much does it cost to run 12000 BTU AC?

With a SEER rating of 13, the 12000 BTU air conditioners roughly use 900 watts per hour.

This means a 1000 watt air conditioner will consume about $131.19 of electricity.

The formula for estimating the cost of running a 12000 AC is (Watts ÷ 1,000) X kWh X Hours Per Day.

How many BTU do I need for a 20x20 room?

A 20x20 room will require an air conditioner with BTU capacity ranging from 10000 to 12000 to cool down the space efficiently.

How many HP is 12000 BTU?

The equivalent HP for a 12000 BTU unit is 1.5.

What size air conditioner do I need for a 1200, 2400, and 3000 square foot house?

You need 21000 BTU or 5 ton AC for 1200 sq. ft., 34000 or 5 ton AC for 2400 sq. ft., and 60000 BTU or 5-ton unit for 3000 sq. ft. house.

What Is The Quietest 12,000 BTU Air Conditioner?

The MRCOOL – DIY-12-HP-115B25 is the quietest high-quality 12000 BTU air conditioner out there. The noise level is only 38 decibels so that you will not get disturbed. 

How Does a 12,000 BTU Window Air Conditioner Work?

A 12000 BTU window AC draws the hot air from the room and moves it over the cold refrigerant coils.

The air is cooled and then pushed back into the room, bringing the temperature down.

What to Look for in the Best 12,000 BTU Window Air Conditioner?

While getting a new 12000 BTU window air conditioner, it is important to look for a good SEER rating and important features like sleep mode, timer, remote control, dehumidification, fan speeds, portability, and easy installation. It should be silent and has lower noise levels.


Final Verdict: What is the Best 12,000 BTU Air Conditioner?

To conclude, we hope you were able to learn everything about the 10 best 12000 BTU air conditioners available to help make your summers cooler. 

While all of our reviewed units do offer good performance (depending on your needs), we found the MIDEA U Inverter to be the best of the bunch.

It is 35% more energy-efficient than the competitors, silent at 42 decibels, and is Wi-Fi-controlled to provide ease of use. 

Of course, you can also consider the other units featured in our 10 best 12000 BTU air conditioner review list.

About the Author Tom Hanson

I’ve worked as an HVAC tech in Phoenix, AZ for the past 10 years. I created CoolAndPortable.com to help home owners select the right portable air conditioner, cooler or air purifier for their needs & budget in just a few minutes.

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