12 Best Lightweight Portable Window Air Conditioners

A chilled room can feel like a piece of heaven during the blistering summer heat. 

Unfortunately, most of us don’t have central air conditioning and can’t afford to splash several thousand bucks on a split AC.

That’s where lightweight window air conditioners come in. These power-efficient appliances can cool rooms within minutes and only cost several hundred bucks. 

So skip the search and check our list of the best lightweight window air conditioners just below!

The Best Lightweight Window Air Conditioners

Top ProductsCapacity BTURoom sq.ft.
1. LG LW8017ERSM Window Air Conditioner8,000350
2. Frigidaire Connect Window Air Conditioner10,000450
3. MIDEA EasyCool Window Air Conditioner6,000250
4. Haier Serenity Series Window Air Conditioner6,000250
5. LG Dual Inverter Window Air Conditioner18,0001,000
6. LG Window Air Conditioner with Heat7,500320
7. Frigidaire Mini-Compact Air Conditioner5,000150
8. hOmeLabs Window Mounted Air Conditioner5,000150

1. LG LW8017ERSM Smart Window Air Conditioner (Wi-Fi)

The number one best selling LG window AC is a perfect fit for voice-enabled rooms and lounges. It can effectively cool spaces up to 350 sq. ft. while conserving electricity through its energy-saving mode. The air conditioner’s silent operation makes it an excellent choice for light sleepers and indoor studios.

You can choose between multiple fan speeds and various cooling modes, including an auto-cool function. All of these settings can also be tweaked through your smart phone or Google and Alexa voice assistant.

2. Frigidaire FGRC1044T1 Cool Connect Smart Window Air Conditioner

Frigidaire Cool Connect Smart Window AC is the best pick for modern homes. The air conditioner’s sleek design perfectly blends in with contemporary home settings unlike other bulky ACs. It has a cooling capacity of 10,000 BTU which is perfect for large bedrooms and even studio apartment lounges.

It’s also worth noting that the air conditioner is smart enabled and can be controlled via frigidaire’s smart phone app. The app allows you to switch the AC on or off and change a bunch of settings, including the temperature, fan speeds, modes.

3. MIDEA EasyCool Window Air Conditioner – Cooling, Dehumidifier

Versatile and efficient — Midea’s Easy Cool Window Air Conditioner is a must have in every room during summers. It features a 6000 BTU capacity which can quickly cool rooms up to 250 sq. ft. within minutes. The AC is simple to install and can easily fit into most windows without requiring additional tools or carpentering. 

What’s more is that the air conditioner doesn’t consume a lot of electricity and automatically shuts on and off to maintain room temperature. Apart from cooling, the unit can also be used as a dehumidifier or a fan with a single button. 

4. Haier Serenity Series Quiet Window Air Conditioner

For people that want a powerful AC that generates almost zero noise, Haier Serenity Series Window Air Conditioner is the way to go. These air conditioners have specifically been designed for ultra-quiet operation and only create about 42dB of noise. This makes the unit an excellent fit for libraries, study rooms, and light sleepers.

In addition to quiet operation, the AC also features a capacity of 6000 BTU which is enough to quickly cool medium-sized rooms. You can also choose between three different modes and fan speeds, including an energy saving mode which helps in cutting down the electricity bill. 

5. LG 18,000 BTU Dual Inverter Window Air Conditioner

LG’s Dual Inverter Window Air Conditioner is truly an incredible unit considering all the technology, capacity, and power savings it packs. Unlike other units, this LG AC uses dual inverter technology which reduces power consumption by up to 25% and only generates 44dB of noise. 

The AC will silently cool large rooms with its 18,000 BTU capacity while saving you almost $67 a year in electricity bills. Aside from that, the unit provides you with a world of control through multiple settings and LG’s ThinQ smartphone app. This allows you to change cooling modes and fan speeds wirelessly, or use a smart assistant like Google or Alexa to do it for you.

6. LG 7,500 BTU Window Air Conditioner with Supplemental Heat

If you’re looking for a reliable two-in-one air conditioner, LG’s 7,500 BTU Window AC is the perfect option for you. The unit packs in enough power to quickly cool rooms up to 320 sq. ft. big no matter how hot it is outside. And when the winter season arrives, you can use the supplemental heat option to make your room warmer and cozier.

Another great feature of this AC is it low-noise operation which generates only 50dB of sound, making it perfect for bedrooms and offices. There are two cooling modes and multiple fan speeds which allows you to control the temperature precisely. Moreover, the unit has an auto restart function for areas that frequently experience power outages.

7. Frigidaire 5,000 BTU Window-Mounted Mini-Compact Air Conditioner

The compact Frigidaire 5000 BTU Window Mounted AC is an outstanding little appliance for cooling small spaces with the reliability of Frigidaire. Despite its size, the AC possesses lots of power and can cool areas up to 150 sq. ft. quickly and efficiently. 

It also allows tons of control for its size and has adjustable fan speeds and cooling modes so you can personalize the climate to your preferences. Because the AC is compact, it fits into most window spaces effortlessly. It also restarts automatically after a power break on the same settings through it auto start function.

8. hOmeLabs 5000 BTU Window Mounted Air Conditioner

If you’re looking for a functional yet simple-to-use AC, hOmeLabs 5000 BTU window mounted air conditioner is an option worth considering. It’s perfect for small apartments and comes with all the hardware and instructions required to install it. Once installed, the air conditioner will efficiently cool your space within minutes while saving electricity.

On the front panel, there are two rotary dials through which you can control the fan speed and temperature. Above those are full-size vents with two directional airflow that allow you to control the throw of the AC as you like. Servicing the AC is also relatively easy as the filter is easily accessible.

9. Friedrich 8000 BTU – Energy Star CP08G10B Chill Series Room Air Conditioner

Friedrich is a brand known best for their premium features and build quality – and their Chill Series CP08G10Bis certainly no less. With a cooling capacity of 8000 BTU, the air conditioner can easily chill spaces up to 350 sq. ft. large no matter how high the temperature. While doing so, the unit produces minimal noise to create an environment where you can focus and work.

One notable feature of this AC is its automatic sweeping louvers that equally distribute cool air around the room. The remote control offers all the basic settings, including a 24-hour timer so you can come home to an already cooled room. 

10. Frigidaire Energy Star 12,000 BTU Window-Mounted Compact Air Conditioner

When it comes to cooling large areas, a powerful and efficient unit like Frigidaire Energy Star 12,000 BTU Air Conditioner is what you need. Even on the hottest days, this AC can effectively cool areas up to 550 sq. ft. big such as offices and lounges without breaking a sweat. 

You also have access to a bunch of settings, including four cooling modes and a multi-directional air vent. These can be adjusted through the remote control, which also has a temperature sensor for you to change the settings accordingly. The ACs air filter is also placed in a convenient location where it can easily be removed cleaned.

11. Della 8000 BTU Window Air Conditioner

Compact and full of features — Della’s 8000 BTU Window Air Conditioner is a perfect choice for those looking for extra features and cooling power in a small package. The air conditioner’s 8000 BTU capacity and highly efficient compressor instantly cools spaces in the most extreme temperatures. At the same time, it conserves electricity by automatically shutting off at the desired temperature. 

The user-friendly control and remote allows you to adjust multiple settings including fan speeds, temperature, and cooling modes. In humid weather, you can use the unit as a dehumidifier or fan to save more electricity. Thanks to the compact size, the air conditioner easily fits into most window sills and comes with all the hardware required for installation. 

12. GE AHY10LZ Smart Window Air Conditioner

A powerful and intuitive unit from a world-renowned brand, the GE AHY10LZ Smart Window Air Conditioner is one of the best all-round ACs on the market. It has a 10,000 BTU cooling capacity which can cool spaces up to 450 sq. ft. large in minutes while producing minimum humidity. 

The unit connects directly to your WiFi and can be operated via a smartphone or through Google Assistant, Alexa, and Apple Homekit. It offers tons of control including three fan speeds, cooling speeds, and two-directional air vents. Lastly, the air conditioner is Energy star certified and consumes minimum electricity to prevent hefty bills.

Buyer’s Guide

Having an air conditioner during the scorching summer heat is nothing less than a blessing. Unfortunately, most people don’t know the first thing about choosing an AC. So they often end up purchasing the wrong type or capacity and regret their decision later onwards.

To save you from all that trouble, we have prepared a special buyer’s guide containing all the knowledge you need to buy the perfect window air conditioner for your home.

Why should you buy a window air conditioner?

Everyone knows that there are several types of air conditioners in the market. Some of the main categories include portable, central, through-the-wall, and window ACs. So why should you choose window ACs over the rest?

Here are a few of the main benefits of window air conditioners:

1. Affordable

If you’re on a budget, you are in luck because window ACs are cheaper than other air conditioner types of the same cooling capacity. In fact, you can easily find a reliable and efficient window AC within $200-$400 range that will last years. Apart from being cheap, window ACs are also easier to maintain and operate compared to other types.

2. Energy Efficient

Another major benefit of window ACs is that they consume less electricity than other air conditioners. The efficiency of AC’s is calculated by comparing their cooling capacity with the wattage they consume. Window ACs surpass all other types of air conditioners in this category and won’t generate hefty electricity bills.

3. Easy to install

Installing a window AC is a simple task that doesn’t require any technical knowledge or professional help. The instructions and hardware come with most window ACs and installing them only takes a few hours. 

4. Take up less space

Compare to portable ACs, window air conditioners don’t take up excess space which makes them a great choice for small apartments and rooms. They snuggly fit into window spaces without making your room feel or look crowded.

Factors to consider when buying a window AC

Before entering the market, you should know how window ACs work and the ways you can compare them. Here are some of the common factors regarding window ACs you should always have in mind:

1. Cooling capacity

Like cars are measured by horsepower, air conditioners are compared by British Thermal Units or BTU. This is the SI unit used to measure the cooling power of air conditioner. An AC with more BTU can cool larger areas and will consume more electricity compared to an AC with lower BTU. 

When choosing an air conditioner, it’s important that the size of your room perfectly corresponds to the BTU of the AC. If you buy a 5,000 BTU air conditioner for a large apartment, the cooling will be unsatisfactory. On the other hand, if you buy 20,000 BTU AC for your small bedroom, your electricity bills will probably empty your pockets.

Here is a comparison table to choose a window air conditioner with appropriate cooling capacity for your space:

Room Area (Sq. ft.)British Thermal Units (BTU)
100 – 1505,000
150 – 2506,000
250 – 3007,000
300 – 3508,000
350 – 4009,000
400 – 45010,000
450 – 55012,000
550 – 70014,000
700 – 1,00018,000
1,000 – 1,20021,000
1,200 – 1,40023,000
1,400 – 1,50024,000
1,500 – 2,00030,000

2. Size

Before you purchase a window air conditioner, always make sure that it can fit through your window sill. Getting an AC that is smaller isn’t necessarily a bad thing, but buying one that’s too big will require remodeling of the entire window frame. 

All manufacturers mention the dimensions of their ACs in the product description, so be sure to take a look. If you choose to buy a smaller air conditioner, you can always seal off the sides with expanding curtains or pieces of wood.

3. Features

No great air conditioner is complete without a few bells and whistles. While each manufacturer includes their own special features, here are some of the most important ones that every AC should have:

  • Multiple modes: You’re not going to be using your air conditioner for cooling all of the time. In those cases, dehumidifier and fan mode prove very helpful in making the heat more bearable while cutting down the electricity bill.
  • Timer: If you want to come home to a chilled room after a sweaty work day, consider choosing an AC with a 24-hour timer. That way, you can set the air conditioner to turn on and off automatically before you reach home.
  • Wireless Control: Most window ACs come with a remote control with which you can change the setting without having to get up from your seat. Some high-end air conditioners directly connect to the Wi-Fi and can be controlled via a smart phone or voice assistant such as Google and Alexa.


How much electricity does a window air conditioner consume?

On average, a good quality window air conditioner that runs during the three months of summer costs between $40-$100 each year. However, this figure can rise up to $2,000 depending on your ACs capacity, wattage requirement, usage pattern, and condition.

How long do window air conditioners last?

A good quality window air conditioner should last 8 to 10 years on average before having a major fault. But with proper care and maintenance, you can always push out a few more years out of your window AC.

How often should you clean a window air conditioner filter?

According to most HVAC experts, you should clean or change your window air conditioner filter after every 4 to 6 weeks. Keeping your filter in optimal conditioner improves your AC’s cooling power and reduces power consumption. 

How do you make a window air conditioner quieter?

To make your window AC quieter, make sure its properly fitted and cushioned by sealing from all sides. If it’s making any rattling noises, tighten any loose panels or internal components with a screwdriver and dust off the fans.

Can you leave a window air conditioner on all day?

Yes, you can leave your window air conditioner on for an entire day without any problem. Most window ACs are properly insulated and do not get overheated after running for long hours at once.

Does rain damage window air conditioners?

No, window air conditioners can withstand strong rainfall without any sort of damage. The outer part of window ACs consists of the condenser/compressor which isn’t affected by rain.

Do window air conditioners need support?

Most lightweight window air conditioners do not need additional support and can easily fit into most window frames. However, larger capacity window ACs that weigh over 100 pounds might need a bracket for additional stability.

Why isn’t my window air conditioner blowing cold air?

Low refrigerant, choked condenser, and a dirty air filter are some of the main reasons why your window air conditioner isn’t blowing cold air. Service the air conditioner yourself or call a technician to refill the refrigerant to make your window AC start cooling again.


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