When purchasing a portable air conditioner, there are several factors to consider that can greatly impact your cooling experience. One important feature to keep in mind is the dehumidifying function. With this built-in feature, certain models can effectively remove excess moisture from the air, making them an excellent choice for those living in humid climates. By controlling the humidity levels, these portable air conditioners not only enhance your comfort but also contribute to a healthier living environment. So, before making your final decision, be sure to check if your chosen model includes this valuable dehumidifying function.

10 Things To Consider When Buying A Portable Air Conditioner

Cooling Capacity

BTU Rating

When choosing a portable air conditioner, one of the first things you need to consider is the cooling capacity. This is measured in BTUs (British Thermal Units) and indicates how much heat the unit can remove from a room. The higher the BTU rating, the more powerful the air conditioner will be.

It’s important to choose an air conditioner with the appropriate BTU rating for the size of the room you want to cool. If the unit is underpowered, it will struggle to cool the room effectively, while an overpowered unit will cycle on and off frequently, resulting in inefficient cooling and higher energy bills.

To determine the BTU rating you need, consider the square footage of the room. As a general rule of thumb, you’ll need around 20 BTUs per square foot of space. However, factors such as insulation, ceiling height, and the number of windows and doors in the room can affect the cooling requirements. It’s best to consult the manufacturer’s guidelines or seek advice from an HVAC professional to ensure you choose the right BTU rating for your specific needs.

Room Size

The size of the room plays a crucial role in determining the appropriate cooling capacity for your portable air conditioner. A small bedroom or office will have different cooling requirements than a larger living room or open floor plan. It’s important to measure the square footage and consider other factors such as ceiling height, insulation, and the number of windows and doors in the room.

If you have a small room, you may be able to opt for a portable air conditioner with a lower BTU rating. However, larger rooms or spaces with high heat loads may require a higher BTU rating to effectively cool the area. It’s always better to choose a unit with slightly higher cooling capacity than what is recommended for your room size, as it ensures better performance and more efficient cooling.

Energy Efficiency

Energy Efficiency Ratio (EER)

Energy efficiency is an important factor to consider when purchasing a portable air conditioner. Choosing an energy-efficient unit can not only help you save on energy bills but also reduce your carbon footprint. The Energy Efficiency Ratio (EER) is a measurement that indicates how efficiently the air conditioner uses electricity to cool a room.

The higher the EER rating, the more energy-efficient the unit is. Look for portable air conditioners with a high EER rating, preferably above 10, to ensure maximum efficiency. These units will consume less energy while providing the same level of cooling capacity compared to models with lower EER ratings.

It’s worth noting that although energy-efficient portable air conditioners may have a higher upfront cost, the long-term savings on energy bills can make them a worthwhile investment. Be sure to look for the EER rating on the product specifications or EnergyGuide label when comparing different models.

Energy Star Certification

To further ensure energy efficiency, look for portable air conditioners with the Energy Star certification. The Energy Star program is a government-backed initiative that aims to promote energy efficiency in consumer electronics and appliances. Air conditioners that carry the Energy Star logo meet strict guidelines set by the Environmental Protection Agency (EPA) and can help you save up to 15% more on energy bills compared to non-certified models.

Choosing an Energy Star certified portable air conditioner not only saves you money but also contributes to the reduction of greenhouse gas emissions, as these units are designed to operate using less energy without sacrificing cooling performance. Keep an eye out for the Energy Star logo when shopping for a portable air conditioner to make a more environmentally friendly choice.

10 Things To Consider When Buying A Portable Air Conditioner

Noise Level

Decibel Rating

Nobody wants an air conditioner that sounds like a jet engine in the middle of their room. That’s why it’s important to consider the noise level of a portable air conditioner before making a purchase. Portable air conditioners have a decibel rating that indicates the amount of noise they produce during operation.

Ideally, opt for a unit with a low decibel rating to ensure quiet and peaceful cooling. Look for units that have a decibel rating of around 50 dB or lower, which is comparable to the sound of a quiet conversation or background music. This ensures that the air conditioner won’t disrupt your sleep or activities and allows you to enjoy a comfortable environment without the annoying noise.

Some manufacturers provide decibel ratings for both the indoor and outdoor units, as the noise levels may vary. Consider not only the noise level at the lowest fan speed but also at the highest speed, as the noise may increase as the unit works harder to cool the room.

Sleep Mode

If you’re particularly sensitive to noise during sleep or prefer a quieter environment, it’s worth looking for a portable air conditioner with a sleep mode feature. Sleep mode is designed to operate the unit more quietly, reducing the fan speed and minimizing noise levels while still maintaining a comfortable temperature.

When activated, sleep mode helps create a serene sleeping environment by gradually lowering the fan speed as the room temperature approaches the desired set point. This not only ensures a quieter operation but also helps conserve energy as the unit doesn’t have to work as hard to maintain the temperature.

Some portable air conditioners with sleep mode also incorporate timers, allowing you to set a specific time for the unit to shut off or adjust the temperature. This enables you to save energy by preventing the unit from operating unnecessarily throughout the night while you are asleep.


Size and Weight

One of the significant advantages of portable air conditioners is their ability to be easily moved from one room to another. When considering a portable air conditioner, it’s essential to assess its size and weight to ensure it can be conveniently transported.

The dimensions of the portable air conditioner will determine how much floor space it occupies in your room. Measure the available space and compare it with the dimensions provided by the manufacturer to ensure a proper fit. Additionally, consider the height of the unit, especially if you plan to place it under a window or in a room with low ceilings.

The weight of the portable air conditioner is another important factor to consider, especially if you plan on moving it frequently. Units with wheels and handles make it easier to roll the air conditioner around the house or apartment without much physical strain. Additionally, lightweight units are more convenient if you may need help from another person or if you have limited strength or mobility.

Wheels and Handles

The portability of a portable air conditioner is greatly enhanced by the presence of wheels and handles. Wheels allow you to effortlessly roll the unit from room to room without having to lift it, reducing strain on your back and arms. Look for units with sturdy and smooth-rolling wheels that can navigate different types of flooring, including carpet and hardwood.

Handles are another important feature to consider. They provide a comfortable grip for lifting or maneuvering the unit when necessary. Look for portable air conditioners with ergonomic handles that are well-positioned and designed to distribute weight evenly, making it easier to carry or push the unit.

When evaluating the portability of a portable air conditioner, consider the type and configuration of the wheels and handles. Some units may have fixed handles on the top for easy lifting, while others may have recessed handles on the sides for more efficient gripping. Choose the style that suits your needs and preferences to ensure maximum portability and convenience.

10 Things To Consider When Buying A Portable Air Conditioner


Window Kit

Installing a portable air conditioner usually involves setting up a window kit. A window kit allows for the proper venting of hot air from the unit while ensuring a secure and sealed installation. Before purchasing a portable air conditioner, consider the window kit it comes with and whether it will be compatible with your windows.

The window kit typically consists of an adjustable window bracket, a window slider kit, and a hose or duct for venting. The window bracket is installed in the window frame and secures the unit in place. The window slider kit is used to fill in the space between the open window and the bracket, ensuring a tight seal to prevent hot air from entering the room.

Make sure to measure your window opening and check the compatibility of the window kit provided by the manufacturer. Some portable air conditioners come with window kits that are adjustable and suitable for various window sizes and types, while others may require additional accessories or purchase of a separate window kit for a customized fit.


Proper ventilation is crucial for the performance and efficiency of a portable air conditioner. The unit needs to exhaust hot air from the room to the outside, and this requires adequate ventilation. When choosing a portable air conditioner, assess the options for ventilation and consider which method will work best for your setup.

Most portable air conditioners use a single hose or dual hose system for ventilation. A single hose system uses one hose to exhaust hot air and draw in fresh air from the room, which can result in a slight negative air pressure and inefficiency. On the other hand, a dual hose system has two hoses, one for exhaust and the other for air intake, which provides a more efficient cooling process.

Dual hose systems are generally more effective in ensuring a balanced air pressure and reducing energy consumption. However, they may require more space for installation and can be slightly more complicated to set up compared to single hose systems. Consider the layout of your room and the availability of window access when deciding which ventilation system is most suitable for you.

Dehumidifying Function

Humidity Control

Apart from cooling, some portable air conditioners also feature a dehumidifying function. This can be particularly beneficial in humid climates or during the summer months when high humidity levels can make the environment uncomfortable and oppressive.

A dehumidifying function helps remove excess moisture from the air, reducing humidity levels and creating a more comfortable living space. It can also help prevent the growth of mold and mildew, which thrive in humid conditions and can negatively impact your health and the condition of your home.

When considering a portable air conditioner with a dehumidifying function, check the specifications to see how many pints of moisture it can remove per day. The higher the dehumidification capacity, the more effective the unit will be in reducing humidity levels. This is particularly important if you live in a humid area or have larger rooms with higher moisture content.

Water Tank or Drainage System

While dehumidifying, portable air conditioners collect the extracted moisture in a water tank or use a drainage system to remove it from the unit. When choosing a portable air conditioner with a dehumidifying function, it’s important to consider how the unit handles the water removal process.

Some portable air conditioners have built-in water tanks that require manual emptying when they become full. This can be inconvenient and may require constant monitoring to avoid overflowing or damage to the unit. If you prefer a more hassle-free option, look for models that feature a continuous drainage system. These units can be connected to a suitable drain, such as a sink or a condensate pump, ensuring continuous operation without the need to empty a water tank.

Consider your preferences and the feasibility of accessing a suitable drain when deciding which type of dehumidification system is most convenient for you. Keep in mind that larger dehumidification capacities may result in more frequent tank emptying or a higher reliance on continuous drainage.

10 Things To Consider When Buying A Portable Air Conditioner


Filter Replacement

Regular maintenance is important to keep your portable air conditioner running efficiently and effectively. One essential maintenance task is filter replacement. Portable air conditioners have filters that help remove dust, allergens, and other airborne particles from the air, ensuring cleaner and healthier indoor air quality.

Over time, these filters can become clogged with dirt and debris, hindering airflow and reducing the cooling performance of the unit. It’s essential to clean or replace the filters regularly to maintain optimal performance. Check the manufacturer’s instructions for guidance on how often the filters should be cleaned or replaced, as it can vary depending on usage and environmental conditions.

When choosing a portable air conditioner, consider the accessibility and ease of filter replacement. Look for units with filters that can be easily removed and cleaned, as this will make the maintenance process much simpler. Some models even have washable filters that eliminate the need for replacements, providing a more cost-effective and environmentally friendly solution.

Easy Access for Cleaning

In addition to filter replacement, cleaning other parts of the portable air conditioner is also important to ensure optimal performance and longevity. Dust, dirt, and debris can accumulate on the internal components, reducing the unit’s efficiency and potentially affecting its cooling capacity.

When purchasing a portable air conditioner, consider the ease of access for cleaning. Look for units that provide easy access to internal components, allowing you to clean them without having to disassemble the entire unit. This can save you time and effort during routine maintenance.

Some portable air conditioners also feature self-cleaning functions that help reduce the buildup of dust and bacteria within the unit. These functions can be beneficial for maintaining clean and hygienic operation, particularly if you’re concerned about indoor air quality or have respiratory sensitivities.

Control Options

Remote Control

Convenience is key when it comes to portable air conditioners, and having a remote control can greatly enhance the user experience. Look for units that come with a remote control, as it allows you to adjust the temperature, fan speed, and other settings from anywhere in the room without having to get up from your seat.

A remote control also provides added convenience during nighttime use or when you’re in bed. Instead of having to walk to the unit to make adjustments, you can easily control the air conditioner from the comfort of your bed, ensuring a comfortable sleeping environment without any disruptions.

When evaluating the remote control functionality, consider the range and reliability of the remote. Look for units that have a decent transmission range, allowing you to control the air conditioner even from a distance. Additionally, check if the remote control has backlighting or glow-in-the-dark buttons, which can be helpful in low-light conditions.

Smart Features

With advancements in technology, many portable air conditioners now come with smart features that provide enhanced control and convenience. These features allow you to control and monitor the unit using your smartphone or other compatible devices, providing flexibility and ease of use.

Smart features typically include Wi-Fi connectivity, allowing you to connect the portable air conditioner to your home network. Once connected, you can use a dedicated mobile app to control the air conditioner remotely, adjust settings, set schedules, and monitor energy usage. Some mobile apps even provide real-time temperature and humidity readings, giving you a comprehensive understanding of your indoor climate.

When considering a portable air conditioner with smart features, ensure that it is compatible with your home network and the mobile device you plan to use. Some units only support specific operating systems or require specific network configurations, so it’s important to check the compatibility before making a purchase. Smart features can greatly enhance the user experience, providing maximum control and flexibility for optimal comfort and efficiency.

10 Things To Consider When Buying A Portable Air Conditioner

Price and Warranty


Price is, of course, an important consideration when buying a portable air conditioner. The cost of a portable air conditioner can vary significantly depending on the brand, features, cooling capacity, and energy efficiency. It’s essential to set a budget and consider the features that are most important to you to ensure you get the best value for your money.

While it may be tempting to opt for the cheapest option available, it’s important to remember that quality and performance should not be compromised for the sake of a lower price. Consider the long-term benefits of energy efficiency and the potential savings on energy bills when evaluating the cost.

When comparing prices, be sure to consider the additional features and capabilities of each unit. Some higher-priced models may offer advanced features, such as smart functionality or superior energy efficiency, which can justify the higher cost. On the other hand, budget-friendly options can still provide reliable and efficient cooling without the bells and whistles.

Manufacturer’s Warranty

A manufacturer’s warranty is an important factor to consider when purchasing a portable air conditioner. It provides protection and peace of mind, ensuring that you’re covered in the event of any defects or malfunctions during the specified warranty period.

When evaluating the manufacturer’s warranty, consider the duration and coverage provided. Most portable air conditioners come with a warranty period of one to five years, depending on the brand and model. Ensure that the warranty period aligns with your expectations and the estimated lifespan of the unit.

Additionally, check the coverage of the warranty to understand what is included and excluded. Some warranties may only cover specific components or parts, while others may offer comprehensive coverage for the entire unit. Be sure to read the terms and conditions of the warranty carefully to understand your rights and responsibilities as a consumer.

Customer Reviews


Reading customer reviews is a valuable way to assess the reliability of a portable air conditioner. By learning from the experiences of other customers, you can gain insights into the unit’s performance, durability, and reliability in real-world situations.

Look for reviews that mention the long-term performance of the unit, as this provides an indication of its reliability over time. Pay attention to reviews that mention consistent cooling, trouble-free operation, and minimal maintenance requirements. Positive reviews highlighting reliability indicate that the portable air conditioner is likely to meet your expectations and provide efficient cooling for years to come.

Negative reviews that mention repeated breakdowns, poor cooling performance, or other issues should be taken into account as well. While isolated negative reviews are common for any product, consistently negative feedback regarding reliability may indicate potential issues with the unit.


Customer reviews also provide valuable insights into the overall performance of a portable air conditioner. Reviews that highlight the unit’s cooling capacity, energy efficiency, and noise levels can help you make an informed decision.

Look for reviews that mention effective cooling even in hot climates or rooms with high heat loads. Positive reviews that highlight fast and efficient cooling indicate that the unit can handle demanding conditions and effectively regulate the temperature in your room.

Assessing energy efficiency is also important, as it not only saves on energy bills but also reduces the environmental impact. Pay attention to reviews that mention low energy consumption, long operating hours, and efficient temperature control. Positive reviews regarding energy efficiency indicate that the portable air conditioner can provide a comfortable environment without significantly increasing your energy costs.

In addition to cooling and energy efficiency, reviews that discuss noise levels are particularly important. Positive reviews that mention quiet operation or low noise levels at different fan speeds indicate that the unit won’t disrupt your daily activities or disturb your sleep.

By considering customer reviews and feedback, you can gain valuable insights into the performance and reliability of a portable air conditioner, helping you make an informed decision and choose the right unit for your needs.

In conclusion, there are several important factors to consider when buying a portable air conditioner. From cooling capacity and energy efficiency to noise level and portability, each aspect plays a crucial role in determining the effectiveness and convenience of the unit. By evaluating these factors in conjunction with customer reviews and your own specific requirements, you can find the perfect portable air conditioner that meets your cooling needs and provides optimal comfort throughout the year.

By John Weitz

Hi, I'm John Weitz, the author behind Portable Air Conditioners at coolportableac.com. As the scorching heat continues to challenge us, I'm here to ensure you Stay Cool Anywhere. With a passion for bringing comfort to your life, I provide unbiased reviews of various portable air conditioner brands on this site. From sleek designs to energy-efficient cooling solutions, I strive to offer informative and comprehensive insights to help you make the right choice. So, whether you're looking for relief at home, in the office, or on the go, trust me to guide you towards the perfect portable air conditioner for your needs.