A Comprehensive Guide to Choosing a Portable Air Conditioner in 2023

Last Updated on August 29, 2023 by Pro Handyman Australia – Editorial Team

The Appeal of Portable Air Conditioning Systems

Portable air conditioners offer a compelling alternative for those who don’t have the resources to install central air conditioning units. These mobile units can be a game-changer for apartments or rooms where a built-in air conditioning system is either unfeasible or too costly. Not only are they easily installed without the need for professional help, but they also provide immediate cooling relief, making them a convenient solution for hot summer days.

Calibrating Cooling Capacity: Selecting the Right BTU Rating

When it comes to selecting a portable air conditioner, the size of the air conditioning unit is often the first question that comes to mind. These devices’ cooling capacities are generally rated in British Thermal Units (BTUs) per hour. A higher BTU rating means the air conditioner is capable of cooling a larger area. Choosing a unit with an appropriate BTU rating for your space is crucial for ensuring efficient energy use and optimal cooling performance.

For a room with standard 8-foot ceilings, you can use the following guidelines:

  • A model with 8,000 BTUs of cooling power is sufficient for a room covering up to 200 square feet, which is roughly 1,600 cubic feet of space.
  • For a room that spans 300 square feet (or approximately 2,400 cubic feet), a 10,000 BTU unit is advisable.
  • If your room measures 400 square feet or 3,200 cubic feet, look for a unit offering at least 12,000 BTUs.
  • A 450-square-foot room (equivalent to 3,600 cubic feet) would benefit from a unit with a 13,000 BTU rating.
  • Lastly, for a room that is 500 square feet or 4,000 cubic feet, a unit with a 14,000 BTU rating would be the most effective.
  • These estimations serve as a useful starting point, helping you select an air conditioner that is neither too weak to cool your space efficiently nor so powerful that it wastes energy and your money.

Optimal Placement for Efficient Cooling

One of the key considerations when setting up a portable air conditioner is determining its ideal location. These devices produce hot air during the cooling process, which needs to be exhausted through a vent hose. Most models come with an included window kit designed to channel this warm air outside. Therefore, it is usually advisable to place the air conditioner within close proximity to a window for straightforward installation and efficient operation.

While positioning the unit next to a window offers the quickest installation, you’re not strictly limited to this option. There are alternative methods for venting the hot air, which you can explore for more customized placement. To dive deeper into the various venting options, you may wish to consult specialized guides on the subject.

Navigating Maintenance Needs: A Simplified Approach

air-conditioning-maintenance

When considering the long-term use of a portable air conditioner, it’s important not to overlook maintenance requirements. Fortunately, the upkeep for these units is relatively straightforward, primarily focusing on moisture management. Like most air conditioners, portable ones also extract moisture from the air during the cooling process.

There are several approaches to managing the condensation collected by the unit. You can manually empty the drain pan as it fills, attach a hose for gravity-fed draining to another location, or utilize an external pump to send the water to a suitable drain. The choice depends on your preferences and the layout of your space.

For those seeking the ultimate in convenience, consider units with self-evaporative features. These models automatically evaporate most, if not all, of the moisture they collect, making them almost maintenance-free when it comes to draining. You may need to drain them occasionally, but it’s a rare requirement.

Aside from moisture management, the other maintenance tasks are minimal. You’ll need to clean the unit’s filters as specified in the owner’s manual, and if ice accumulates on the coils, a full defrost will be necessary. Aside from these occasional tasks, portable air conditioners give consumers a “set and forget” experience, allowing you to enjoy a cooler environment with minimal effort.

Addressing Noise Concerns: Finding the Right Balance

It’s important to recognize that portable air conditioners are not silent operators. Unlike window units, which place a portion of the device outside the home, portable air conditioners are fully housed within your living space. As with any device designed to circulate air, there will be some noise.

If you’re particularly sensitive to sound, take the time to compare the noise levels, often indicated in decibels (dB), of different units. Some models offer quieter performance, operating as low as 49 dB on their highest settings. Being informed about the noise level will allow you to make a selection that aligns well with your comfort and lifestyle needs.

The Bottom Line on Energy Efficiency

For those concerned about both the environment and their energy bills, it’s crucial to consider the energy efficiency of a portable air conditioner. A key metric to look for is the Energy Efficiency Ratio (EER), which quantifies how many British Thermal Units (BTUs) are produced per watt of power consumed. Simply put, the higher the EER, the more energy-efficient the unit.

Certain models have garnered reputations for their energy-efficient designs. When shopping, keep an eye out for those with a notably high EER, as they’ll offer optimal cooling performance while minimizing your environmental footprint and monthly energy expenses.

Understanding Energy Efficiency Ratings in Portable Air Conditioners

energy-efficiency

Historically, portable air conditioners weren’t mandated to display energy star ratings. However, the landscape changed in April 2020, when new regulations required these units to meet Minimum Energy Performance Standards (MEPS). They now come with a ‘zoned’ energy rating label that illustrates their energy efficiency based on your geographical location. The label also provides other valuable information such as noise levels, annual energy consumption in kWh, and cooling capacity.

Insights into Single-Duct Portable Air Conditioners

Single-duct or one-hose portable air conditioners have generally been without energy stars on their labels. Their absence indicates that these models are not particularly energy-efficient in cooling an entire room. They are, however, more suitable for regulating the temperature around a single individual. Despite the lack of traditional energy star ratings, the newly introduced labels still provide some insight into their long-term energy consumption, particularly if you reside in a humid area.

Versatility and Multiple Functions: What to Look For

When selecting a portable air conditioner, the best choice will be a unit that is not just a one-trick pony. Look for models that offer additional functions beyond just cooling. Many come with a dehumidifying mode, which extracts moisture from the air without necessarily cooling it. Some even offer a simple fan function to circulate air, while others extend their utility with a heating capability.

When employing these different modes, be aware that each might require specific configurations. For instance, while the cooling mode necessitates the venting of warm air, the dehumidifying mode typically requires a drain to eliminate collected moisture. If the unit also has a heating capability, note that the size of the room it can heat efficiently may differ, as the heating unit usually has a separate BTU rating.

Electrical Safety and Power Cord Length: Plan Before You Plug In

Although using an extension cord sounds tempting to increase the reach of your portable air conditioner, manufacturers generally caution against this practice. This does not only void your warranty but may also pose a fire risk due to the high power consumption of these units. Therefore, it’s advisable to carefully consider the unit’s placement in relation to available power sockets. Make sure the built-in power cord is long enough to suit your setup without requiring an extension.

Remote Control Functionality: Convenience at Your Fingertips

Remote controls aren’t just a luxury; they add a level of convenience similar to that of a TV remote but with additional features like room temperature display. Many remotes come equipped with an LCD display, enabling you to check the cooling status without having to move closer to the unit. This can be particularly useful for setting automatic modes and timers to streamline your daily routine.

Operating Modes: Choose a Unit that Adapts to Your Needs

When it comes to operating modes, most units offer a variety of options including cooling, heating (for models with reverse-cycle capabilities), dehumidifying, fan-only, and automatic or ‘smart’ modes. The automatic mode is especially handy, allowing you to set a target temperature at which the unit will automatically switch between cooling and heating to maintain optimal comfort levels.

Timing Features: Pre-set for Comfort

On/off timers offer the convenience of programming your unit to operate only when needed, like cooling your home before you return from work. Sleep timers are another beneficial feature, enabling the unit to switch off after a set period and often adjusting the temperature for optimal sleep comfort. These features not only save energy but also reduce operational noise during the night.

Airflow Direction: Take Control of Your Comfort Zone

The ability to direct airflow can make a significant difference in how effectively a portable air conditioner cools a space. While some units feature manually adjustable louvres, others come equipped with automatically oscillating louvres that distribute air more widely. The latter can be more effective at maintaining an even temperature throughout the room.

Window Kit and Hot Air Exhaust: A Must for Effective Cooling

Portable air conditioners typically include a window kit, comprising filler panels to seal the open window gap and an exhaust hose to direct hot air outside. This setup is essential for efficient cooling and should be easy to install and remove.

Noise Level: Quiet Operation for Peaceful Living

Portable air conditioners can generate noise levels that compete with everyday conversations, particularly when running at full capacity. This can be distracting when you’re watching TV or listening to music. So, consider the unit’s decibel rating if quiet operation is a priority for you.

Water Drainage: Less Hassle, More Comfort

Many modern portable air conditioners come with a collection tank for water. Some innovative models use this water to aid in cooling, thereby minimizing the frequency with which you’ll need to empty the tank.

Portability and Ease of Use: Because It Should Move When You Do

If you intend to move the unit between rooms, look for features like easy-to-access handles and ample clearance between the floor and the unit. Small wheels may prove troublesome on carpeted floors, so consider this aspect based on your home’s flooring.

Connectivity: Smart Control for Smart Living

While traditional remote controls suffice for most uses, some newer models offer Wi-Fi connectivity, allowing control through a mobile app or even a smart speaker. This can be especially useful for remotely controlling the unit, although for most people, the standard remote control will usually meet all their needs.

Installation Essentials: Starting Off on the Right Foot

air-conditioning-installation

Before diving into the world of portable air conditioning, it’s crucial to acquaint yourself with the installation instructions provided by the manufacturer. Most units come equipped with window kits for exhaust purposes. These kits usually consist of a duct pipe, a window spacer or slider, and connection accessories to link the air conditioner to the duct and the duct to the slider.

To ensure that hot air is efficiently expelled from your room, start by installing the window kit. It’s worth noting that these sliders are generally designed for standard windows that move vertically. Therefore, before making your purchase, confirm that the kit is compatible with your window type.

Positioning and Spacing: Creating an Ideal Environment

Once the window kit is in place, focus on positioning your portable air conditioner in an optimal location within the room. Provide the unit with sufficient space away from walls to ensure proper air circulation and more efficient cooling.

Powering Up: Connect Safely and Directly

For safety and efficiency, plug the air conditioner directly into a wall socket instead of an extension cord. This will also adhere to most manufacturers’ guidelines and help maintain your warranty.

Water Management: A Crucial but Overlooked Element

Many portable air conditioners come with a built-in storage container to collect dehumidified water. While some innovative models use this water to enhance cooling efficiency, others will require manual emptying. Make sure to understand your unit’s water management system and adhere to maintenance guidelines.

Regular Maintenance: The Key to Longevity

Your portable air conditioner is not a “set it and forget it” appliance. It will require regular upkeep, including vent cleaning and water container emptying, to ensure optimal performance and a longer lifespan. If you aren’t using the air conditioner, consider removing it to extend its life and maintain its efficiency.

Supplemental Cooling: Make the Most of Your AC

To maximize the cooling effect throughout the room, consider using a ceiling or pedestal fan in conjunction with your portable air conditioner. This will aid in evenly distributing the cool air, and improve the space’s overall comfort.

For Further Guidance: Additional Resources

Many resources offer comprehensive step-by-step guides on installing and maintaining portable air conditioners. These can be invaluable in helping you get the most out of your new appliance.

Ventilation Requirements: The Exhaust Vent Dilemma

It is technically possible to operate some portable air conditioners without an exhaust vent by utilizing a narrowed duct or flange. This can be placed through an open door leading to the outside. However, the efficiency of such a setup is questionable at best. Unless the remaining door opening is securely sealed, the cool air generated by the air conditioner is likely to escape almost immediately, particularly in hot weather conditions. Thus, while operation without an exhaust vent is possible, it is not recommended due to the compromise in performance.

Warranty and Product Lifespan: A Reflection of Confidence?

When considering the durability of a portable air conditioner, one of the first points to check is the manufacturer’s warranty. Regrettably, many manufacturers offer a limited two-year warranty, which doesn’t inspire confidence in the product’s longevity.

There are, however, some exceptions with warranties extending up to three years. Even more exceptional are the few brands that offer extended warranties on specific components like motors and compressors, which can have anywhere between five and seven years of warranty. 

It’s worth noting that, regardless of the warranty period, consumers are still protected under consumer protection laws in various jurisdictions, such as the Australian Consumer Law, for a reasonable amount of time after the warranty expires. This provision is worth keeping in mind while making a purchasing decision.

Evaluating Room Size and BTU Ratings

Portable air conditioners offer a convenient way to regulate temperatures, capable of cooling spaces that range from 200 to over 1,000 square feet. One of the first factors to consider when purchasing such a unit is the British Thermal Unit (BTU) rating, which should align with the size of the room you wish to cool. Higher BTU ratings generally correspond to a more potent cooling ability, which becomes increasingly important for larger spaces.

Location of Window and Electrical Outlet: Key to Installation

It’s crucial to take note of the placement of windows and electrical outlets in your room. Your portable air conditioner will require a window for venting purposes, and an electrical outlet for power. Plan the positioning of your unit accordingly to ensure easy access to both.

Condensate Drainage Requirements

Unless you are opting for a self-evaporative model, be prepared to manage the condensate that will accumulate in the unit. Ensure that you have a convenient and effective method for draining this accumulated moisture.

The True Portability and Ease of Installation

The advantage of portable air conditioners lies not only in their cooling capabilities but also in their ease of installation and true portability. These units can be quickly set up and moved around as needed, making them a flexible solution for cooling multiple spaces.

In conclusion, when opting for a portable air conditioner, a well-thought-out approach can go a long way. Pay attention to the BTU rating to match the unit to your space, consider the logistics of window and outlet locations, and account for condensate drainage if necessary. These considerations will help you choose a unit that is not only effective but also genuinely convenient to use.