9 Best 15000 BTU Air Conditioners: Reviews & Comparisons

1 - LG LW1516ER

First up, we have the LG LW1516ER 15,000 BTU air conditioner as our top pick. LG is one of the most reputable brands when it comes to home appliances and electronics. The Energy Star certified model comes with an efficiency rating of 11.9, which is great if you’re looking for an eco-friendly, bill-saving AC unit.

The 15000 unit is ideal for large apartments, a floor of a home, or a vast open living space. Rated to dehumidify at 3.3 pints per hour, it’s also great if you live in an area that gets a lot of rain and humidity.

Suiting windows anywhere between 25 inches to 36 inches in width, the nice thing is the height is of no importance here as this model is only 17 inches tall. Just remember that it’s always recommended to measure your window, so you don’t end up with a model too big or small. Coming with side curtains and insulation strips, you don’t have to worry about leaks coming in or out.

Moreover, the package includes an air conditioner kit – everything you’ll need to install and mount the unit! You don’t have to worry about purchasing any extra tools. You’ll get a filter, side panel leaf covers, support bracket, and window sealing foam, which is also long-lasting. Overall, this will save you some extra cash, plus it’s just a thoughtful inclusion on behalf of LG.

Once it’s all set up, you’ll see that you can choose between “Cool” and “Energy Saver” mode. Cool mode, well, cools the room to your ideal temperature. With Energy Saver mode, once it reaches this temperature, it will turn off and on again if it senses it’s starting to get warmer in the environment surrounding it. Additionally, you can take advantage of the auto-restart, which is particularly handy if the power happens to go out when you’re asleep, keeping you cool and comfortable no matter what.

While it does include only a 1-year warranty, the price point is very attractive. In fact, it’s comparable in price to many models with half the functionality and efficiency this one has.

2 - Coleman Airxcel 08-0080 Mach 15

Next up, we have what may very well be the strongest RV air conditioner currently on the market. The Airxcel 08-0080 Mach 15 is a 115 volt 15000 BTU air conditioner that offers low-cost operation yet substantial power output. The unit itself is also surprisingly affordable.

If you’re nervous about installation, you don’t have to be concerned – the installation of this model was one of the easiest. The lightweight design makes it easy to carry and lift, though it’s admittedly quicker with two people. Even if you have zero experience in installation and DIY projects, you’ll still be able to pull this off quite nicely.

Despite the fact the 15000 BTU RV air conditioner is so light, it’s very durable in every aspect. The motor’s shaft is sealed to keep it safe from the elements, and the shroud is secured with rust-proof, stainless steel truss head screws. The copper tubing is light yet sturdy, with a system made just for heat dissipation.

The only real complaint users had was regarding the noise, which the company does not specify online. While it’s by no means overwhelming, it is noticeable and can make quieter conversations, music, or television more challenging to hear if you’re right next to it. Overall, though, it’s an affordable, convenient, high-quality RV air conditioner that’s perfect if you’re not particularly DIY-savvy.

3 - Amana

Amana may not be as well-known of a brand as some of the competitor options on here, but it’s still widely considered to be the best 15000 BTU through the wall air conditioner. If you’re on the hunt for an air conditioner to keep your sunroom, office, or small living space up to 800 square feet temperate, then this is just the model for you.

With a Sound Transmission Class (STC) of 28, less outside noise will be transmitted into your room by means of the AC unit. Due to this, you will have a nice, quiet environment to work, sleep, or relax in.

“This PTAC unit features 2 fans that provide quiet operation while keeping your environment comfortable,” says HVAC Direct.

The American-made model comes assembled, engineered, and produced in the country, and with almost 4 decades of experience, you can expect durability, too. The unit comes in a neutral Stonewood Beige tone, which works well with all kinds of existing décor and won’t scratch easily.

To control operation, the top 15000 BTU wall air conditioner with heat comes with a convenient, user-friendly, 7-button touchpad with a clear LED display, which is nice to use in all types of lighting. It’s here, where you can choose the mode you’d like to select, change the fan speed, as well as use the one-touch up and down temperature settings. If you live in a humid or rainy environment, you’ll love the advanced condensate dispersion system that also prevents large amounts of drainage from the AC. The dehumidification capacity of 4.4 pints per hour will always make sure you and your guests are nice and comfy, even in the hottest temperatures.

4 - Mitsubishi MZ-FH15NA

Mitsubishi is easily one of the most well-known brands in the world, and for more than 5 decades has managed to stay on top of the mini split industry, too. Their MZ-FH15NA 15000 BTU mini split air conditioner is a wall-mounted model made to be used in single and multi-zone systems.

Right when you receive the AC unit, you can start the installation process right away. Thanks to the wall-mounted design and handy mounting plate, the whole process can be finished in less than an hour. It’s perfect for residential areas like home offices, bedrooms, living rooms, basements, and much more with the ability to address up to 700 square feet.

The Energy Star-rated system is very sleek and quiet, yet operates with exceptional efficiency to offer consistently cold or warm air. This makes it a wonderful option year-round, no matter what the climate in your city is like. Cooling capacities range from 6,450 to 19,000 BTU, and heating ranges from 5,150 to 24,000 BTU.

This is one of the most versatile mini-split models out there, with multiple operating modes, fan speeds, and airflow directions to suit just about any room. Activate Powerful Mode, and it will momentarily boost refrigerant flow and fan speed to create rapid comfort in only a few minutes. However, if you want to keep cooling costs down, simply put it in Econo Cool Mode, which will change the cooling set point and horizontal vanes. Vane control can be set to Wide or Standard settings, while Auto will choose the optimal position depending on the operating mode you have the unit set to.

On the other end of the spectrum, the brand’s Hot-Start Mode eliminates cold drafts through postponing fan operation until the heat exchanger has adequately warmed up. All in all, the 15000 BTU air conditioner 220V model is an excellent choice in just about every regard.

5 - Friedrich Chill Premier CCW15B10A

Friedrich is already a very well-respected brand, but their Chill Premier CCW15B10A is one of a kind.

“The Chill Series is Friedrich’s Premium Line air conditioners, an efficient line of air conditioners with programmable controls. It’s everything you want in an air conditioner – easy to install, easy to use, and easy to maintain,” says Total Home Supply. I can’t say I disagree!

With an EER of 11.8, it comes as no surprise that the AC unit is also Energy Star certified. The AC itself is quite affordable, but when you factor this efficiency in, operating it is also low in costs.

What sets the CCW15B10A apart from the rest is its oscillating distribution system, which consists of continuous auto air sweep louvers to cool the entire room. 4-way airflow control will also help cover every inch, so there are fewer hot spots! You’ll also get a 24-hour on/off timer and 3 cooling speeds, all controllable by the included remote control so you can stay comfortable on your sofa or bed.

Installation is one of the easiest, due to the slide-out chassis, allowing for both window and through-the-wall installation. You can also run the power cord on either side of the unit. To top it off, this model comes with noise-reducing design which is rare for a larger BTU window unit.

6 - Emerson Quiet Kool Smart

Consistently toted as the best rated 15000 BTU air conditioner with smart features, the Emerson Quiet Kool Smart is the tech-savvy who appreciate cutting-edge technology. Thanks to their intelligent design, it’s one of the easiest to use, and quietest!

As “the perfect cooling solution for your home or office, it’s available with varying BTUs to accommodate any size room,” says Home Depot.

Much like the model above, it also comes with a slide-out chassis and is designed for rooms/spaces up to 700 square feet.

The 115-volt unit is easy to install and comes with several cooling and fan speed options, a temperature dial, and 8-way directional air louvers to hit every spot in the room. While it may be relatively powerful, it’s also quite efficient with an 11.8 EER, being Energy Star certified!

Various modes include Cool, Dry, Fan, and Auto mode, which make it great to use in any kind of environment, and without you having to program it each time manually. However, where the Quiet Kool Smart really makes its mark is the fact that it’s both Wi-Fi and voice-control enabled! It even works with Alexa and Google Home, so you can adjust settings exactly how you’d like with just your voice.

7 - KLIMAIRE

Next up is the Klimaire, which is not only one of the most aesthetically pleasing air conditioner units, but one of the most economical. While it obviously cools the space in question (up to 700 square feet), the PTAC heat pump also heats it, making it ideal for every season without having to purchase a separate heater.

If you or someone else in your home has allergies, you’re going to love the fresh air intake design along with the washable polypropylene air filter. This filter will make sure your room or area is cleaner than ever before, so everyone can truly relax and be comfortable.

Dip switches provide various personalized settings, depending on your preferences and the situation. It also operates with an optional 24V wall thermostat and remote control for your convenience. However, each AC unit comes with a digital push-button control panel and LED display for easy and quick adjustments, no matter the time of day. It’s here, where you can select your exact temperature, heating, cooling, fan modes, and more.

The only possible improvement various consumers have expressed interest in would be to make the unit easier to install. It is one of the more challenging on our list in this aspect, but aside from that, you can count on it being quiet, convenient, and of course, high performing.

8. Dometic Polar White

The Dometic Polar White RV AC unit 15000 BTU is quite possibly the coolest looking model out there. However, it offers so much more than just looks and style. Dometic is a company with an overall excellent reputation, and once you start using the Polar White, it will be easy to see why.

When you first open the package, you’ll find that it comes with a complete non-ducted ceiling kit, meaning that there’s no need to purchase anything else to install it properly. Not only that, but you’ll notice it’s very lightweight, even for an RV air conditioner. As you can imagine, this only facilitates the installation process so you can relax and enjoy it.

You don’t just have to stick with white, either – black is also a sleek option that may blend in better with some RV models. Despite being so light, it’s very durable and fitted with a high-performance motor that will produce enough power to keep your entire home cooled. The custom composite Korad shroud is also laminated to hold up for years to come against harsh UV rays. A 3-inch, deep-drawn G90 carbon streel drain pan comes complete with a powder-coated finish, to ensure it doesn’t scratch or rust.

Finally, you can expect it to be nice and quiet due to the fan motor sound dampening brackets, which will also reduce vibration.

9 - Koldfront WTC14012WCO230V

Last, but certainly not least, we have the Koldfront WTC14012WCO230V. If you need a portable air conditioner, you can’t get better than this model. However, it’s important to note that while it does come close, it’s not quite 15000 BTU. It is the most powerful you’ll get out of a portable unit, though.

Despite being so portable and lightweight, it can still cool a 700 square foot room, just like the more prominent, stationary units! Including 4 fan/cooling speeds, you can choose with precision exactly how you’d like the room to feel. Moreover, adjustable louvers allow you to pinpoint specific spots in the space to cool. Depending on the speed and power, noise ranges from 59.2 to 61.3 decibels, which is quiet, all things considered.

To adjust it all, you have a user-friendly interface and a 24-hour timer at your convenience. If you need to remove moisture from the air, the tough dehumidifier can do the job, too. No matter if you have allergies or not, you’ll appreciate the washable air filter, which effectively takes contaminants out of the air and lets you breathe easier.

The 2-year warranty is just a bit better than what seems to be the industry average of 1 year, but there are still many models out there with more extended warranties.