Best 15,000 BTU Air Conditioners [2022 Top Picks]

| Last Updated: March 22, 2022

You don’t need a massive central air conditioning system to keep you comfortable all summer.

If you live in a small home or apartment, a 15,000 BTU window air conditioner can give you all the cooling capacity you need to beat the heat, decisively and consistently.

A window unit could also be the perfect choice if you only need to cool a specific room or living space.

Comparison of the Best 15000 BTU Air Conditioners

  • Digital control panel for easy programming
  • Type: Window
  • Dimensions: 23.6 x 25.4 x 17.9"
View Latest Price →
  • Convenient and Instantaneous Adjustability Via Remote Control
  • Type: Window
  • Dimensions: 26 x 28.13 x 17.7"
View Latest Price →
  • Remote Control Programming With Automatic Temperature Sensing Capacity
  • Type: Window
  • Dimensions: 25.37 x 23.63 x 17.85"
View Latest Price →
  • Chassis is removable for window or wall installation
  • Type: Window
  • Dimensions: 25.4 x 23.6 x 17.9"
View Latest Price →
  • Vibration and noise reduced by dampening brackets
  • Type: Rooftop
  • Dimensions: 29.17 x 27.24 x 12.71"
View Latest Price →
  • Remote Control Compatibility With a Clear LCD Display Face
  • Type: Window
  • Dimensions: 23.6 x 25.4 x 17.9"
View Latest Price →
  • 24-hour timer for greater convenience
  • Type: Window
  • Dimensions: 25.4 x 23.6 x 17.9"
View Latest Price →

How to Choose a 15,000 BTU Air Conditioner

Window air conditioners are a popular item. Consequently, there are a lot of options available on the market. Several factors should determine your choice, based on your personal needs and preferences:

Energy Usage Rates

Energy-efficient window air conditioners are usually certified through the federal government’s ENERGY STAR® rating system. These units will consistently outperform the competition, keeping your home cool while consuming ten percent or less electricity.

As a general standard, energy efficiency is identified by an air conditioner’s Energy Efficiency Rating, or EER. When comparing various 15,000 BTU units, always remember that the A/C with the higher EER will save you more money.

HOmeLabs 15000 BTU

Size of the Space to be Cooled

Window air conditioners with a 15,000 BTU cooling capacity are recommended for entire floors, rooms, or apartments in the 550-1050 square feet size range.

If you’re trying to cool an area on the high end of that estimate, a 15,000 BTU unit may not be powerful enough if other factors cause an increased heat effect. These could include ample sunshine penetration through windows, proximity to the kitchen, or having numerous people occupying that space for much of the time.

Installation Requirements

Standard window air conditioners can only be installed in single-hung or double-hung windows. 

These have window sections that move up and down vertically. Window A/Cs can also be installed in wall sleeves particularly intended for that purpose.

If your home or apartment has neither the proper windows nor a pre-existing wall sleeve, you could have the latter installed. You just have to be sure to install the sleeve in a wall that opens to the outside, so the A/C can vent properly.

Key Terms to Know

To help compare products in this review, we have included a few key specifications for each. Here is a quick summary of what they mean.

  • Type: Whether the AC is portable, window mounted, mini-split, central, evaporative, etc.

  • Dimensions: The actual dimensions in l x w x h.

  • Weight: The physical weight of the air conditioner.

  • Voltage: The amount of electricity the unit uses. This determines the type of outlet it must plug into. 

  • Coverage Area: The amount of square footage the unit can adequately cool, determined by the manufacturer.

  • Energy Efficiency Features: Whether the unit has any features or ratings relating to energy usage.

  • dB (decibel) Level: The amount of noise the AC produces when in operation.

  • Modes: The modes of operation the unit features. This includes dehumidification, fan only, cooling, etc.

Review of the Best 15,000 BTU Air Conditioners

When you begin your search for a new 15,000 BTU air conditioner, you’ll be looking for something that stands out from the crowd.

Fortunately, there are plenty of standouts available. After an exhaustive search, we’ve found some outstanding window air conditioners that will keep your family cool on even the hottest summer days, without busting your budget.

These are the best of the best and that’s what you want and need.

Best Overall

HOmeLabs 15000 BTU

hOmeLabs Window Air Conditioner 15000 BTU - Energy Efficient, Digital Thermostat, Remote Control - Ideal for Rooms up to 700 Sq. Ft.


Type: Window

Dimensions: 23.6 x 25.4 x 17.9″

Weight: 105.82 lbs

Voltage: 115

Coverage Area: 700 sq. ft

Energy Efficiency Features: Energy Star; SEER: 11.8

dB (decibel) Level: High (56 dB), Medium (53 dB) and Low (52 dB)

Modes: Cool, Dry, Fan, ECO, Sleep

We may earn commission from purchases made from our links, at no additional cost to you


This powerful window air conditioner delivers excellent cooling and airflow, presenting five various modes you can choose. These functions include cooling, drying, ventilation fan, sleep, and economical.

As is the case with most 15,000 BTU ACs, you can expect a loud sound when on the highest fan setting. There’s no qualification for returns should you receive a faulty unit, which can be disconcerting.

On the plus side, the air conditioner has a reusable air filter to slide out for easy cleaning. The remote control has several functions you can switch between, eliminating the need to stand up from your couch or bed.

Bottom Line

HOmeLabs provides various cooling capacities for this air conditioner, including 8,000, 10,000, and 12,000 BTU. Of course, the 15,000 BTU AC is the one you’ll be after for massive spaces and different modes.

Besides the listed functions, there’s also a 24-hour timer. You’ll receive all the necessary mounting brackets, while it also includes a 5.9 ft power cord. Overall, it’s an excellent device that’ll meet your cooling needs.


Reusable air filter that slides out

Five different modes for various situations

Elegant remote control with multiple functions

Window installation that covers up to 700 sq. ft.

Includes mounting accessories with 5.9 ft. cord


Not eligible for returns

Loud hum on the highest setting

Best Overall Window A/C

LG 1516 ER 15,000 BTU

LG 15,000 BTU Window Air Conditioner, Cools 800 Sq.Ft. (20' x 40' Room Size), Quiet Operation, Electronic Control with Remote, 3 Cooling & Fan Speeds, Auto Restart, 115V


Type: Window

Dimensions: 26 x 28.13 x 17.7″

Weight: 112 lbs

Voltage: 115

Coverage Area: 800 sq. ft

Energy Efficiency Features: Energy Star; SEER: 13

dB (decibel) Level: 52 dB

Modes: Cool, Energy Saver, Fan

We may earn commission from purchases made from our links, at no additional cost to you


LG has gained a reputation for reliability. The LG 1516 ER is its latest entry in an impressive line of functional and highly-effective air conditioning models. With full push button or remote digital controls, the performance of this unit can be carefully customized to meet the cooling requirements of even the pickiest consumer.

Built to cool spaces up to 800 square feet, this ENERGY STAR-certified, LG model offers unmatched energy efficiency and is easy to program and operate. It is sturdily constructed and includes a package of desirable features that will never go out-of-date.

Bottom Line

At a potent 15,000 BTUs, the LG 1516 ER is a summertime winner. Its variable-speed fan, 24-hour timer, energy-saver mode, and remote programmability will let you personalize its performance to align perfectly with your cooling preferences. Few air conditioners are as unanimously praised by users as this one, and if you join their ranks, you’ll be delighted with the results this ingeniously designed model can produce.


Superior Energy-Efficiency Rating of 11.9

Up-Facing Vents to Prevent Freezing Drafts

Whisper-Quiet Operation in Low-Speed Setting

Full Digital Control, Either Directly or By Remote

115-Volt Power Cord is Compatible With Standard Home Outlets

24-Hour On/Off Timer to Guarantee Precise Cooling Performance

Energy-Saving Mode That Shuts the A/C On and Off Automatically

Uses LG’s Patented Anti-Corrosion Coating Shield for Extended Unit Lifespan

Impressive Dehumidifying Capacities (Can Remove 3.3 Pints of Water Per Hour)


May Not Adequately Cool Large Apartments or Multiple Adjacent Rooms

Digital Controls and Display Can Be Confusing for Those Used to Older Models

Has Been Known to Operate Noisily (and Require Professional Intervention) When Installation is Improperly Done

Best Budget Window A/C

Frigidaire FFRE153WAE

Frigidaire FFRE153WAE Window-Mounted Room Air Conditioner, 15,100 BTU with Energy Star Certified, Multi-Speed Fan, Sleep Mode, Programmable Timer, Easy-to-Clean Washable Filter, in White


Type: Window

Dimensions: 25.37 x 23.63 x 17.85″

Weight: 101.4 lbs

Voltage: 115

Coverage Area: 850 sq. ft

Energy Efficiency Features: Energy Star; EER: 11.8

dB (decibel) Level: 52 dBA

Modes: Auto, ECO, Sleep, Cool

We may earn commission from purchases made from our links, at no additional cost to you


Anyone looking for a quality set of features at a surprisingly reasonable cost need look no further than the Frigidaire 15,100 BTU 115V Window-Mounted Median Air Conditioner.

Frigidaire has been at this for a long time, and these recent entries to their product catalog prove that superiority is not always identified by price. With a cooling capacity sufficient to cover 850 square feet of living space, this product is ready to put hot air on notice and bring a cool breeze of relief into your life.

Bottom Line

The Frigidaire 15,100 BTU 115V Window-Mounted Median Air Conditioner packs a lot of power for its size. It is energy-efficient and keeps the air cooled anywhere you put it, thanks to sophisticated air flow controls and remote control capacities.

People who purchase Frigidaire appliances never come away disappointed and you would likely join the ranks of the satisfied if you decide to install this versatile and highly effective window A/C in your home.


Full Digital Display for Easy Data Reading

Works With Any Standard Electrical Outlet

Low Power Start-Up and Running Efficiency

Multi-Speed Fan for Control of Cooling Intensity

Strong, Energy-Efficient Performance at 11.8 EER

Eight-Way Airflow Controls Allow for Precise Cooled Air Distribution

Adjustable Noise Levels (Low, Medium, or High) for Daytime or Nighttime Use

Potent Dehumidification Capacities, With Moisture Removal Rates of 3.8 Pints Per Hour

Remote Control Features Constant Temperature Readings for Effective Comfort Management


No Automatic Noise Reduction

Uses Touch Sensors Instead of Easier-to-Use Push Buttons for Programming

Somewhat Complicated Assembly and Installation Instructions and Requirements

Quietest Window A/C

Keystone KSTAW15CE

Keystone 15,000 BTU Window Mounted Air Conditioner & Dehumidifier with Smart Remote Control - Window AC for Apartment, Living Room, Garage, Large Rooms up to 700 Sq.Ft.


Type: Window

Dimensions: 25.4 x 23.6 x 17.9″

Weight: 102.3 lbs

Voltage: 115

Coverage Area: 700 sq. ft

Energy Efficiency Features: Energy Star; EER: 12.1

dB (decibel) Level: 52.5-56.4 dB

Modes: Energy Saver, Sleep, Cool, Fan, Dry, Auto

We may earn commission from purchases made from our links, at no additional cost to you


One of the principal functions is the “Follow Me” mode. The remote control acts as a thermostat to help detect temperature levels in the house. Fortunately, the air conditioner consumes low power thanks to its energy efficiency settings.

You’ll need extra hands to deal with the massive weight. Furthermore, you’ll find it challenging to install in windows and walls due to its bulk. Where the latter is concerned, you’ll have to buy a wall sleeve separately.

Thankfully, you’ll receive a chassis for the 15,000 BTU AC that’ll smooth the installation process. Besides cooling, you can also enjoy the extra dehumidification function for regions that suffer from high humidity. 

Bottom Line

If you’re looking for a sturdy air conditioner that’s reliable and durable, the Keystone KSTAW15CE might be ideal for you. The cooling capacity is strong enough to cover large rooms while reducing the humidity levels.

The installation has benefits and drawbacks. The chassis that’s included will undoubtedly assist you with window solutions, but you’ll need to obtain the right sleeves for walls. You’ll love the thermostat settings for the remote control, though.


Cooling capacity for 700 sq. ft.

Dehumidification removes 3.2 pints per hour

LCD remote control with “Follow Me” functionality

Energy-efficient design for low power consumption

Includes window chassis for wall and window installations


Bulky design that’s extremely heavy

Challenging to install even with the chassis

Best 15000 BTU RV Air Conditioner

Dometic Brisk II

Dometic Brisk II 15K BTU White


Type: Rooftop

Dimensions: 29.17 x 27.24 x 12.71″

Weight: 74 lbs

Voltage: 115

We may earn commission from purchases made from our links, at no additional cost to you


If you love road trips in your motorhome, this Dometic Brisk II air conditioner is ideal. It’s easy to install, and you can also craft a makeshift ramp to move it onto the roof. It includes warranty and registration cards for when things go wrong.

One element that it excludes is a heat pump, so you’ll only be able to cool your space. If you find that the unit is short cycling when you first turn it on, you’ll need to open the housing and adjust the thermostat adjustment screw.

You won’t need to worry about excessive noise thanks to the dampening brackets. Your motorhome will also experience optimal airflow due to the design and material.

Bottom Line

This 15,000 BTU roof air conditioner is a welcome addition to most motorhomes, improving your traveling experience. Thanks to the dampening brackets, the wheels on the road are more likely to generate more noise than the AC unit.

You’ll love how good the airflow feels, delivering exceptional performance even in blistering heat. If you plan it properly, you’ll be amazed at how quickly you can install the device.


Easy to install

Ideal for motorhome roof installation

Includes warranty and registration cards

Contains dampening brackets for noise reduction

Durable materials with design for maximum airflow


Excludes heat pump

Tends to short cycle on occasion on the default setting

Subcat Banner

Whirlpool Energy Star 15,000 BTU 115V

Whirlpool 15,000 BTU 115V Window Air Conditioner & Dehumidifier with Remote Control, Window AC Unit for Apartment, Bedroom, & Large Rooms up to 700 Square Feet in White


Type: Window

Dimensions: 23.6 x 25.4 x 17.9″

Weight: 105.8 lbs

Voltage: 115

Coverage Area: 700 sq. ft

Energy Efficiency Features: Energy Star; EER: 11.9

dB (decibel) Level: ‎52 dB

Modes: Cool, ECO, Sleep

We may earn commission from purchases made from our links, at no additional cost to you


Whirlpool is a well-known name in climate control technology. The Whirlpool Energy Star 15,000 BTU 115V Window-Mounted Air Conditioner only enhances their reputation for excellence.

This model gets high marks for rapid cooling response and full-area coverage, making it an ideal selection for smaller rooms or apartments in even the hottest locations. This unit has been almost universally lauded by consumers who’ve purchased and installed it.

Bottom Line

The Whirlpool Energy Star 15,000 BTU 115V Window-Mounted Air Conditioner functions efficiently and effectively in moderately-sized spaces. For specific rooms with high levels of activity, this model will handle cooling demands readily and often with some capacity to spare.

This window-mounted appliance has drawn rave reviews from users, in large part because its superior programmability makes it one of the easier air conditioners to manage.


Adjustable Front-Facing Dual Air Flow Vents

Quiet Running Speeds in Every Cooling Mode

Comes with a Round-the-Clock Programmable Timer

115-Volt Power Cord Can Be Plugged into Any Home Outlet

Features Special Eco-Mode for Energy Savings and Sleep-Mode for Overnight

First-Class Dehumidification Capabilities, With Removal Rates of 3.52 Pints of Water Per Hour


Some Complex Assembly Required for Installation

Cool Blasts From Front Vents Can Create a Draft if Sitting Close to the Unit

Decent But Not Substantial Coverage at 700 Square Feet of Cooling Capacity

7. TCL Energy Star

TCL 15W3E1-A Home Series Window Air Conditioner, 15,000 BTU, White


Type: Window

Dimensions: 25.4 x 23.6 x 17.9″

Weight: 105.82 lbs

Voltage: 115

Coverage Area: 700 sq. ft

Energy Efficiency Features: Energy Star; EER: 11.9

dB (decibel) Level: ‎52 dB

Modes: Cool, ECO, Sleep, Auto, Cool

We may earn commission from purchases made from our links, at no additional cost to you

What Recent Buyers Report

Recent buyers have awarded the TLC Energy Star full marks regarding the value, cooling efficiency, durability, and sound. It easily cooled their rooms even when used during a heatwave. The remote of this air conditioner has a great range and very easy to use. They also found the customer service very helpful. Buyers recommend the TCL Energy Star to people looking for an exceptional air conditioner unit to cool a large space while being on a budget.     

Why it Stands Out to Us

We find the performance of this air conditioner simply exceptional. Its eight-way air outlets provide consistent airflow, thus ensuring perfect cooling to every part of the room. It has an auto-restart feature that ensures that if the power is cut off accidentally, the unit will restart with the previous function settings automatically once the power resumes. This unit will also switch to one of the three modes automatically based on unit setting ad room temperature.

Who Will Use This Most

This unit is perfect for people who value efficiency and performance. This unit uses a 115V outlet, thus eliminating the need to install an expensive 220/240V line. It effectively removes moisture from the air, thus making the environment more comfortable. The three cooling settings make it easier to customize your air-conditioning. It is accompanied by a remote that allows you to adjust the settings without getting up from your comfortable position on the sofa. The 24-hour timer not only increases convenience but also ensures energy savings.   

Bottom Line

The TCL Energy Star is one of the best 15000-BTU air conditioners for people who want an energy-efficient unit. It comes with excellent features such as a long-range remote, filter-cleaning reminder, self-troubleshooting, and much more. It adjusts the temperature and fan speed automatically, thus making the room perfectly relaxing and comfortable. Moreover, it turns off the compressor when the desired temperature is reached, thus conserving energy.  


Requires a standard 115 volts outlet

Eight-inch long cord for better plug options

Compressor turns off automatically to conserve energy

Control display can be turned off during sleeping hours to prevent disturbance

Filter-cleaning light to remind users to clean the filter for optimal operating efficiency


Some people found it too noisy

8. Friedrich Chill Series CP15G10B


Type: Window

Dimensions: 30.31 x 25.51 x 16.88″

Weight: 117 lbs

Voltage: 115

Coverage Area: 700 sq. ft

Energy Efficiency Features: Energy Star; EER: 11.9; CEER: 11.8

dB (decibel) Level: 44-62 dB

Modes: Cool, Fan, Dry, Auto

We may earn commission from purchases made from our links, at no additional cost to you


You’ll feel a chill in the air when your new Friedrich Chill Series CP15G10B 15,500 BTU Window Air Conditioner is up and running. But it’ll be a pleasant and refreshing chill, exactly what the doctor ordered on those scorching summer days.

This latest entry the Chill Series line is a fast-acting room cooler designed to cover a 700 square foot area, operating quietly and with advanced energy efficiency. For comprehensive cooling coverage, few models offer more reliable performance than this one.

Bottom Line

The two qualities that most separate the Friedrich Chill Series CP15G10B 15,500 Window Air Conditioner from the competition are its oscillating distribution system and superior EER rating. Because of its modernized design, summer-long comfort is virtually guaranteed if you choose to purchase this Chill Series window-mounted A/C. It is a vigorous and highly-effective appliance that makes an ideal choice for rooms or spaces where you are active and on the move.


Power Cord Can Be Run to the Left or Right of the Unit

Remote Control Capability in All Settings and Functions

Comes With a 115-Volt Plug-In for Standard Home Outlets

ENERGY STAR-Certified With Near Maximum Energy Efficiency

24-Hour On/Off Timer Allows for Round-the-Clock Programming

Digital Temperature Display for Easy Monitoring of Performance

Oscillating Louvers Distribute Cooled Air Evenly Throughout the Room

Money-Saver Setting Moderates Fan Functions to Reduce Energy Consumption


On the High-End Pricewise for its Class of Appliance

Probably Not Powerful Enough to Cool Large Apartments or Entire Floors of a Home

Fan Blades in Some Units Have Been Known to Rub Against Interior Styrofoam Walls

Generally Quiet Operation, But May Not Be Quiet Enough for the Bedrooms of Light Sleepers

15,000 BTU Air Conditioner Options

As you’ve seen by our reviews, there are different 15,000 BTU AC types available on the market. To help understand which one will suit you best, we’re providing brief overviews of how each one works.

Mini Split

These air conditioners consist of two parts, one that goes inside the house and the other outside. The latter is the condenser, draining out any liquid formed from the component inside the house.

The mini-split AC unit has several advantages. At the top of the list are improved aesthetics and acoustics. Not only will it look elegant on the interior wall, but you’ll eliminate the sound of the compressor.


Window air conditioners have the convenience of having the exhaust or drainage pipe outside without installing it separately. It’s also a temporary fixture, as you can uninstall and move it to a different location when you wish.

Since it has fewer components than a mini-split aircon, it’s more cost-effective for the purchasing and electrical costs. However, it has fewer features available in some instances.


For an even better solution in large houses where you want to isolate specific rooms, there’s the portable 15,000 BTU AC. Due to the amount of power it needs to generate, you can expect these devices to be bulky and heavy. However, the carry handles and wheels make them easier to transport.

Recreational Vehicles 

Another option is a roof air conditioner for motorhomes. Due to the installation nature, manufacturers make them easy to place on the top of RVs, so you don’t struggle too much. However, you may struggle to find a device that includes a heat pump.

Evaporative / Swamp Coolers

While some air conditioners require water drainage or bucket, these handy devices use nature’s evaporative technique to draw condensation out through an exhaust hose. You won’t need to deal with liquids, and it’s easier to maintain.

Do I Need a 15,000 BTU Air Conditioner?

Whether you need a 15,000 BTU AC depends on several factors. The most significant one is the room size you’re trying to cool. While you’ll enjoy the cooling effect, you should aim for a small size if you don’t have much space.

The 15,000 BTU can cover up to 875 sq. ft., but we’ve seen many that only go up to about 700. If your bedroom is approximately 250 sq. ft, you’re better off with a 6,000 BTU. You won’t pay as much for electricity, and it’s cheaper to buy and maintain in the long run.

Frigidaire 15,100 BTU

Top Brands With 15,000 BTU ACs

There are plenty of air conditioning manufacturers that provide 15,000 BTUs, all promising effective cooling and powerful performance. While many of them have outstanding reputations, we decided to present you with our top three.


If you’ve spent enough time researching the HVAC industry, we’re sure that Honeywell has appeared numerous times. With a rich history going as far back as 1885, it’s created many innovative products that stood the test of time.

While 15,000 BTU ACs are certainly on the list of its top-performing products, it also provides other HVAC devices. It includes sensors, heaters, thermostats, dehumidifiers, and purifiers, to name a few.


HomeLabs is a company that delves into many sections, mainly focusing on electrical appliances and air conditioning solutions. You may recognize the brand from its wide selection of kitchen appliances, such as toasters, kettles, and ice makers.

Of course, it’s not shy when it comes to its 15,000 BTU air conditioners. It also supplies other similar devices, such as filter replacements, purifiers, humidifiers, and dehumidifiers.


Keystone doesn’t merely want to replicate the HVAC systems of its competitors. The company enjoys research and innovation, experimenting with new features and technology that solves many of the problems experienced by its customers. 

It manufactures fans, ventilation systems, air conditioners, dehumidifiers, and so much more with worldwide distribution at its feet. Its 15,000 BTU ACs are some of the best on the market.

Price Points of 15,000 BTU AC

Keystone KSTAW15CE

You’ll find various products available online and in physical stores that vary in price range. While you may find some discounts during special events or low product demand, you’ll still find a general price guide based on the AC type and number of features. Here’s what you can expect:

Up to $300

These 15,000 BTU ACs have basic functionality with only one to three modes available that usually include cooling and ventilation. Affordable window and portable air conditioners generally fall within this range.

$300 – $700

If you’re looking for excellent performance with more features, you’ll more than likely find them in this price range. Of course, you can expect greater weight with larger components, but you have better remote functionality and extra installation accessories.

$700 – $1,000

The more advanced air conditioners will be more expensive, as they have complex technology that stands out from the standard devices. For instance, roof or motorhome ACs might fall in this bracket. You can also expect to pay more for high-tech portable and evaporative units.


Finally, you have the top-of-the-range products that deliver cooling for entire homes or office floors. These include complete air conditioning systems with ductless split mount parts, for example. 

Friedrich Chill Series CP15G10B

Who Should Not Buy a 15,000 BTU AC?

You might be excited to buy your first 15,000 BTU AC. While we’ve provided you with many reasons to do so, it’s not always a good idea. Here are a few examples of where you shouldn’t get one.

High Humidity

Air conditioners may be delivering excellent cooling in regions with high temperatures, but did you know that high humidity cancels the effect? Despite more water vapor in the air, you’ll actually feel warmer. 

While some air conditioners have a dehumidification function, not all can stand up against high humidity. You’ll want to aim for a powerful dehumidifier to help reduce the moisture levels.

Spaces Under 600 or Over 750 sq. Ft.

There’s a misconception that buying a massive 15,000 BTU AC is a good idea for small spaces. While it’s appealing, you’re spending more electricity than you need to for that room size. If it’s anything below 600 sq. ft., try aiming for a 12,000 BTU or smaller.

The same applies to massive warehouses or spaces above 750 sq. ft. There are industrial air conditioners that push way about 24,000 BTU to deal with these areas. 

Dusty Areas

If you live in an area with lots of dust, pollen, or other contaminants that flare up your allergies, an air conditioner won’t resolve the issue. Its primary purpose is cooling, not clearing the air of pollutants. While some AC units do have internal filters to help the situation a bit, you might want to look into buying a purifier instead.

Are All 15,000 BTU Air Conditioners The Same?

The basic performance characteristics of a 15,000 BTU air conditioner will not vary much, regardless of the make and model. Where the differences come is primarily in the features offered and in the overall quality of the product.

The window-mounted air conditioners we’ve reviewed here are all proven performers with attractive characteristics that should appeal to most consumers.

 The gradations in craftsmanship between these excellent window air conditioners are small. But in comparison to most models, they stand out as reliable and cost-efficient.

Frigidaire 15,100 BTU

You absolutely get what you pay for with these superior performers, which is what you can expect when purchasing products from the leading names in the HVAC industry.  

The summertime heat will challenge your determination to stay cool, calm and comfortable. A brand new 15,000 BTU air conditioner can make all the difference, as long as you select one that fits your budget and has the specific characteristics you require in an air conditioner.

Good-quality window air conditioners are energy-efficient, yet flexible enough to allow for customized cooling operation in all outdoor weather conditions. What you want and need is what they will provide, and that’s why you can do no wrong if you stick with appliances that combine logical designs with excellent proven functionality.


The 15000-BTU air conditioners are a great product that helps to beat the searing heat in the summers. However, before buying a particular brand, it helps to thoroughly research and read online reviews of different brands in order to make an informed choice. The above guide is written with the object of facilitating various users and to inform them about the pros and cons of different models. So read it carefully to invest in a unit that is perfect for you.  

People Also Ask

In addition to the above reviews, people also ask the following questions in order to have a clear idea about which unit will best meet their needs:

How Much Does It Cost to Run a 15,000 BTU Air Conditioner?

It depends on how much wattage the air conditioner consumes. In general, a 15,000 BTU AC uses $0.20 per hour, which equates to $1.6 per day for eight hours of operation. You could pay up to $48 if you run it for 30 days of the month.

Can BTUs Be Too High?

Yes, they can. Small spaces don’t need massive air conditioners, as it will make the room too cold and you’re wasting electricity. Each BTU size has a specific range in square feet that it can efficiently cover. It will also short cycle too often, which can damage the device.

How Many Amps Does a 15000-BTU Air Conditioner Use?

A 15000-BTU air conditioner draws an average of 12.5 to 13 Amps.

Photo credit:

How Much Area Will a 15000-BTU Air Conditioner Cool?

Air conditioners that support 15000-BTU can cool an area of almost 875 sq. Ft.

Will a 3000 Watt Generator Run a 15000-BTU Air Conditioner?

An air conditioner uses the most wattage as compared to other electrical appliances in your home or RV. Moreover, it requires more wattage to start than it does to keep it running. For a 15000-BTU air conditioner, you will need at least 3500 watts to start and 1800 watts to keep it running. Thus, a 3000-watt generator will not be enough for a 15000-BTU air conditioner.    

What Size Generator Do I Need to Run a 15000-BTU Air Conditioner?

To comfortably run a 15000-BTU air conditioner, you will need a generator of at least 3300 watts.

How Many Watts of Electricity Does it Take to Run a 15,000 BTU Air Conditioner?

A 15,000 BTU air conditioner will consume approximately 1,500 watts per hour if operated at normal settings. The average price of electricity in the United States is 12 cents per kilowatt-hour. Therefore, you’ll pay about 18 cents per hour for the privilege of using your 15,000 BTU window air conditioner. All things considered, that’s not a bad deal at all. 

If you would like to play around with these numbers, or see how much watts a smaller unit requires, you can use our AC unit electricity usage calculator

How Many Square Feet Will a 15,000 BTU Air Conditioner Cool?

Good-quality air conditioners with 15,000 BTUs of cooling capacity will normally cool somewhere between 700 and 850 square feet of indoor space. However, this number may be reduced if a room or living area is unusually warm, either from the inflow of sunlight through windows or heat from another source, such as a kitchen.

My name is Bob Wells and I am a retired HVAC tech from Washington state. I am currently retired and no longer do much with HVAC, however, I feel like I have a lot of knowledge in the subject and I wanted to create a website where I could talk about what I've learned and help upcoming HVAC techs. Find more info about me and HVAC Training 101.