Electric Wall Ac Unit Buyer's Guide

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If you're in the market for an electric wall AC unit, you'll want to consider the factors that affect its performance and your energy bill. The size of the room is crucial, as a unit that's too small won't cool efficiently.

A good rule of thumb is to choose a unit that's 20-30% larger than the room's square footage. For example, a 10x10 foot room would require a 120-150 square foot unit.

The SEER rating is also important, as it measures a unit's energy efficiency. Look for a unit with a high SEER rating, such as 14 or higher, for optimal performance and savings.

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What You Need to Know

You'll want to consider the different names for electric wall AC units, which include Thru-The-Wall AC, In-Wall AC Unit, Wall-Mounted Air Conditioners, Wall Sleeve AC, and Built-In AC units.

To determine the right size for your space, use the EPA's recommendation of 20 BTUs per square foot of area. For example, for 400 square feet, you'll need an in-wall unit with around 8,000 BTUs of output.

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If you live in a hotter climate, you may want to opt for a higher BTU unit, such as 22 or 25 BTUs per square foot. Keep in mind that the BTU rating matters most, and quality also counts.

Here's a rough estimate of the area that different BTU sizes can cool:

Remember to check your power availability before purchasing, as most air conditioners require a standard 120-volt outlet, and some larger models may need a 220-volt connection.

What Are Electric Units Called?

Electric units are used to provide cooling and heating in various settings, and they go by different names. You might have heard of them being called Thru-The-Wall AC Units.

These units are also known as In-Wall AC Units, which gives you an idea of their design. They're not installed on the wall itself, but rather in a sleeve or a housing that's mounted on the wall.

Some people refer to them as Wall-Mounted Air Conditioners, which is a straightforward description of their mounting style. Others call them Wall Sleeve AC, which highlights the sleeve or housing that contains the unit.

In some cases, you might hear them referred to as Built-In AC units, which emphasizes their integration into the building or structure.

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Electrical Requirements

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Before you buy an air conditioner, check your power availability because today's models typically require a standard 120-volt outlet.

Some larger models may need an upgraded 220-volt connection, which is a good thing to consider before making a purchase.

Most cooling only wall air conditioners only need a standard 110V outlet, but you should double-check the specifications of your model.

Cost

Through-the-wall air conditioners can be a significant upfront investment, with a typical purchasing cost that's higher than window units.

The installation costs of these ACs can add up quickly, averaging around $600.

A professional installation can take anywhere from 8 to 10 hours to complete, which is a substantial amount of time and labor.

However, if you're handy with tools, you can save on installation costs by doing it yourself, eliminating the need to pay a professional.

It's worth noting that these ACs are more efficient at cooling down your space, which can make up for the initial high cost in the long run.

Choosing the Right Unit

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To choose the right electric wall AC unit, you'll want to consider the size of the space you're trying to cool. The EPA recommends approximately 20 BTUs of AC output for every square foot of area you're keeping cold.

For a 400 square foot area, you'll need an in-wall unit with around 8,000 BTUs of output, or a 14,000 BTU unit can keep approximately 700 square feet of space cool in ideal conditions.

If you live in a hotter climate, you may want to opt for a higher BTU unit, using 22 BTU or even 25 BTU per square foot of space. This can help ensure the unit can keep up with the heat.

Explore further: Commercial Cool Ac Unit

What size unit is required?

To determine the right size unit for your space, let's start with the basics. The EPA recommends using 20 BTUs of AC output for every square foot of area you're keeping cool.

This means that for a 400 square foot space, you'll need an in-wall unit with around 8,000 BTUs of output. A 14,000 BTU unit, like the largest one from GE, can cool approximately 700 square feet in ideal conditions.

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However, if you live in a hotter climate, it's best to opt for a higher BTU unit to ensure it can keep up. Using 22 BTU or even 25 BTU per square foot of space is a good rule of thumb in these areas.

A high-quality 10,000 BTU wall AC, such as the GE AJEQ10DWH, can only cool down an area of 200 square feet.

Choosing the Best

Through-the-wall air conditioners offer a range of benefits, including energy efficiency, effective cooling, and a sleek design that takes up less space.

More energy-efficient than window units, through-the-wall air conditioners are a popular choice for homeowners seeking a permanent and efficient cooling solution.

To choose the best unit, consider the Energy Efficiency Ratio (EER) or Seasonal Energy Efficiency Ratio (SEER) rating, which indicates the unit's efficiency and can lead to reduced energy consumption and lower utility bills.

A higher EER or SEER rating means a more efficient unit, so look for units with ratings above 10 or 13, respectively.

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Some through-the-wall air conditioners come equipped with features like remote controls, programmable timers, and energy-saving modes, offering both convenience and cost savings.

When selecting a unit, consider the BTU rating, which should match the square footage of the room you're trying to cool.

Here are some key features to consider when choosing a through-the-wall air conditioner:

Ultimately, the best through-the-wall air conditioner for you will depend on your specific needs and preferences.

Interchangeability

Interchangeability can be a key consideration when choosing the right air conditioner for your home. Some in-wall air conditioners can be swapped out with window air conditioners, depending on the design.

However, this isn't always possible due to size and weight differences. Through-the-wall air conditioners are particularly heavy and shouldn't be installed within window frames.

This is something to keep in mind when deciding on the type of air conditioner to install.

Installation and Placement

To install an electric wall AC unit, you'll need to choose the right location. This means selecting an exterior wall that can support the weight of the unit and has a nearby electrical connection.

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A major difference between through-the-wall and window air conditioners is the installation location. Through-the-wall air conditioners are installed into an exterior wall, requiring a permanent wall opening.

You'll want to choose a wall with a solid concrete or wooden structure that can support the weight of the unit. Avoid walls made of gypsum board or other light materials.

To ensure proper installation, you'll need to locate studs in the wall. These are thick wooden beams that are placed 16 inches apart, and you'll want to place the unit between two studs.

Before cutting a hole in your wall, switch off the main power to avoid any electrical shocks. Take adequate safety precautions and have a respirator on hand.

Here are some key things to consider when choosing a wall for your electric wall AC unit:

  • Exterior wall required
  • Solid concrete or wooden structure
  • Nearby electrical connection
  • Avoid walls made of gypsum board or other light materials

Cutting a hole in your wall can be a daunting task, but it's essential for proper installation. Make sure to take the proper dimensions of your air conditioner and the sleeve, and outline the area before cutting.

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After cutting the hole, create a supporting frame for your unit. This will ensure that it's securely fastened to the wall and can withstand the weight of the unit.

Proper installation and placement are crucial for efficient cooling. Improper installation can lead to reduced airflow and increased energy bills, leaving you all sweaty during high temperatures.

Features and Capabilities

Electric wall AC units come with a range of convenient features that make usability a breeze. Some models feature automatically adjusting louvers that help move cold air around the space better.

You can expect to find features like antibacterial air filtration, digital control panels, and fan-only modes that circulate air without using the AC compressor. These features help save electricity and extend the life of the system.

Some electric wall AC units come with a 24-hour timer mode, allowing you to set the unit to turn on/off after a given amount of time. Additionally, many quality units offer a hand-held remote control, enabling you to install the unit higher on the wall to get it out of the way of furniture.

Here are some key features to look for in an electric wall AC unit:

  • Automatically adjusting louvers
  • Antibacterial air filtration
  • Digital control panel
  • Fan-only mode
  • 24-hour timer mode
  • Hand-held remote control

Features and Capabilities

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Through-the-wall air conditioners offer a range of features and capabilities that can enhance your cooling and heating experience.

Digital controls allow you to make precise temperature settings, using specific numbers instead of a dial. This feature is a must-have for anyone who wants to stay comfortable and save energy.

Air filters are a crucial part of any air conditioner, and most through-the-wall models come with washable filters that can save you money on replacements. Regular cleaning of these filters is essential to maintain your unit's efficiency.

Remote controls are a convenient feature that lets you change the AC settings from anywhere in the room. Some models even allow you to pair with a smart thermostat for ductless systems, giving you complete control over your cooling and heating.

In case of a power outage, the auto-restart mode automatically restarts the motor, ensuring that your air conditioner operates in the last programmed setting when the power is restored.

Light modern room interior with bed near lamp on floor near armchair and window near painting and air conditioner
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Some models come with automatic swing louvers that help move cool air around the room, maintaining a perfect room temperature. This feature is particularly useful for large rooms or areas with uneven cooling.

Many through-the-wall air conditioners come with a heating option, allowing you to use your unit throughout the year. This feature is especially useful for people who live in areas with mild winters.

A quieter mode of operation is available on some models, which consumes less energy and helps you sleep comfortably without AC sound affecting your sleep. This feature is a game-changer for anyone who values a good night's sleep.

Some models offer an energy-saving feature, where the compressor only runs when absolutely needed, reducing energy consumption and saving you money on your electricity bills.

Here are some key features to look for in a through-the-wall air conditioner:

  • Digital controls
  • Remote control
  • Auto-restart mode
  • Automatic swing louvers
  • Heating option
  • Quieter mode
  • Energy-saving feature

In addition to these features, look for an Energy Star certified model and a higher EER (Energy Efficiency Rating) value, which indicates that the unit is more energy-efficient. A model with a 9.7 or greater EER value provides excellent cooling at the lowest possible operational cost.

Noise

Man looks outside a window with an LG air conditioner unit visible, creating a reflective effect.
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Noise levels can be a significant concern when it comes to air conditioners, but some units are designed to be quieter than others. The average wall air conditioner emits around 50 decibels of sound, comparable to light traffic noise.

Some AC units have a special quiet mode that limits sound to a scant 30 decibels. This is a game-changer for light sleepers who wake up easily due to disruption.

Through-the-wall AC units are designed with this in mind, placing the noisiest part outside the room. They can be as quiet as 50 decibels, equivalent to the noise of your refrigerator.

Window air conditioners, on the other hand, tend to be loud and can cause irritation.

Product Options

You've got a few options to choose from when it comes to electric wall AC units. These units can be quite efficient, with some models boasting a SEER2 rating of up to 28.4.

Some electric wall AC units even come with features like Econo Cool and Powerful Mode, which can help you save energy and stay cool. These features can be a game-changer on hot summer days.

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If you're looking for a specific type of unit, you might consider a single-zone mini-split AC unit. These units are great for spaces where you already have or don't need heat, but you need cooling. They often come with additional features like a wall unit, remote control, or app control.

Here are some key features to look for in an electric wall AC unit:

  • SEER2 up to 28.4
  • Econo Cool
  • Swing Mode
  • Powerful Mode
  • Available in multiple capacities
  • ENERGY STAR-certified
  • Control the indoor unit with a wall unit, remote control, or app

Capacity: 8,000–14,000

The capacity of wall air conditioners can vary significantly, ranging from 8,000 to 14,000 BTUs. This range is impressive, with some units delivering 14,000 BTUs of cooling power.

For example, the GE 115 volt wall air conditioner has a cooling capacity of 8,000 BTUs, while the GE AJEQ14DCH with electric heat has a cooling capacity of 14,000 BTUs. This is a significant difference, and it's essential to choose the right size for your space.

If you need a wall air conditioner with heat, some units come with heat pumps that can provide supplemental heating. One such unit is the GE 14,000 BTU 230V wall air conditioner with 10,600 BTU heating, which can maintain comfortable temperatures for about 250 square feet of space.

Interior design of contemporary spacious bedroom with comfortable soft bed with bedside table and air conditioner in apartment
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Here's a breakdown of the cooling capacities of some popular wall air conditioners:

Keep in mind that some wall air conditioners can also provide heating, with capacities ranging from 4,200 to 11,200 BTUs. This is especially useful for spaces that don't have a separate heating system.

5 Best for Home

If you're looking for top-notch wall air conditioner units for your home, you're in luck - there are plenty of great options out there.

The features and factors for choosing a wall AC unit can help narrow the selection field considerably.

A good wall air conditioner unit can make a big difference in keeping your home cool and comfortable.

The list of the 5 best wall air conditioner units for your home is a great place to start your search.

These units are chosen based on their impressive features and factors that make them stand out from the rest.

Some wall air conditioner units have impressive cooling capacities, while others have sleek and compact designs.

Ultimately, the best wall air conditioner unit for your home will depend on your specific needs and preferences.

By considering factors like energy efficiency, noise levels, and installation requirements, you can find the perfect unit for your space.

Through-the-Wall Units

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Through-the-Wall Units are a great option for those who want to free up their window space and have a more decluttered look in their room. They're similar to window ACs, but instead of sitting in a window frame, they're installed in an opening in the wall.

You can choose from a variety of names for these units, including Thru-The-Wall AC, In-Wall AC Unit, Wall-Mounted Air Conditioners, Wall Sleeve AC, and Built-In AC units.

To ensure proper installation, it's essential to choose a suitable spot on your wall, taking into account factors like electrical connections and wall thickness. A stud finder can help you locate studs, which should be between 16 inches apart. Ideally, you'd want your wall-mounted air conditioner to be placed between two studs and not through them.

A wall sleeve is also necessary to support the air conditioner and prevent the wall from buckling under its weight. You can either buy a sleeve separately or get one that comes with the air conditioner.

Through-the-Wall Units

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Through-the-wall air conditioners are a great option for cooling down your space, but they do require some planning and installation. They're designed to sit in an opening in your building's wall, freeing up your window space and providing a more decluttered look.

The main difference between through-the-wall and window air conditioners is the installation location. Through-the-wall air conditioners are installed into an exterior wall, requiring a permanent wall opening, while window air conditioners are installed within the boundaries of the window frame.

To choose the right through-the-wall air conditioner, you'll need to consider the size of your space. A general rule of thumb is to use 20 BTUs of AC output for every square foot of area you're keeping cool. For example, for 400 square feet of area, you'll need an in-wall unit with around 8,000 BTUs of output.

Here's a rough estimate of the BTU requirements for different spaces:

Keep in mind that these are just estimates, and the actual BTU requirements may vary depending on your specific climate and insulation.

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Through-the-wall air conditioners do need a sleeve to support the unit and prevent the wall from buckling. The sleeve can come with the air conditioner or be purchased separately, depending on the model and size.

If you're planning to install a through-the-wall air conditioner, it's essential to follow the manufacturer's instructions and take necessary safety precautions. Cutting through a wall can be a complex process, and it's recommended to seek professional help if you're not comfortable with DIY projects.

The installation costs for a through-the-wall air conditioner can range from $600 to $1,000, depending on the complexity of the job and the location. However, with a DIY installation, you can eliminate this cost and save money.

Overall, through-the-wall air conditioners are a great option for cooling down your space, but they do require some planning and installation. By choosing the right size and following the manufacturer's instructions, you can enjoy a cool and comfortable space all summer long.

For your interest: Diy Aircon Installation

Make Through Smart

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Making your through-the-wall air conditioner smart can be a game-changer. You can control your AC settings from a smartphone, and some smart controllers even allow you to schedule your cooling and heating in advance.

With smart control capabilities, you can reduce energy usage and save money on your energy bills. In fact, some smart AC controllers can help you save up to 25% on your energy bills.

You can also use a smart AC controller to pair with your through-the-wall air conditioner, which is a great way to double up the benefits of your unit. This means you can control your air conditioner from anywhere, anytime, using only your mobile.

Some smart AC controllers, like the Cielo Breez, offer features like Comfy Mode, which helps maintain the perfect temperature at any time of the day. This intelligent temperature/humidity trigger automatically turns your AC on/off to achieve your desired temperature.

Here are some benefits of making your through-the-wall air conditioner smart:

  • Control your AC settings from a smartphone
  • Schedule your cooling and heating in advance
  • Reduce energy usage and save money on your energy bills
  • Pair with your through-the-wall air conditioner for double the benefits
  • Maintain the perfect temperature at any time of the day with Comfy Mode

To get the most out of your smart AC controller, look for features like geofencing parameters, voice commands, and daily or weekly scheduling in advance. This will help you stay comfortable and save energy at the same time.

Maintenance and Efficiency

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Wall air conditioners are surprisingly energy-efficient, with many units having an Energy Efficiency Ratio (EER) ranging between 9 and 11. This means they use less energy to deliver the same amount of cooling or heating output.

In fact, Energy Star-certified units can use as much as 60% less energy compared to central AC units, saving you money on your energy bills. This is especially true since wall-mounted units only cool or heat a specific room, not your entire home.

However, with great energy efficiency comes great maintenance responsibility. Homeowners will need to regularly change air filters, check hoses, and clean coils to keep their wall-mounted units running smoothly. Your installer can also conduct routine service on your behalf.

8. Noise Level

The noise level of your air conditioner can be a major concern, especially if you're a light sleeper. The average wall air conditioner emits around 50 decibels of sound, comparable to light traffic noise.

Air conditioner unit mounted outdoors on a building wall, showcasing modern HVAC technology.
Credit: pexels.com, Air conditioner unit mounted outdoors on a building wall, showcasing modern HVAC technology.

Some AC units have a special quiet mode that limits sound to a mere 30 decibels. This can be a game-changer for those who value a peaceful night's sleep.

It's worth noting that through-the-wall AC units can be just as quiet, emitting around 50 decibels of sound, equivalent to the noise of your refrigerator. This makes them a great option for those who prioritize a quiet environment.

If you're looking to reduce AC sounds that disrupt your comfort, consider investing in a Cielo Smart Thermostats.

Energy Efficiency

Energy efficiency is a top priority when it comes to air conditioning. An AC unit's energy efficiency ratio (EER) helps us understand how much cooling or heating output a unit can deliver for a specific amount of electricity. The higher the unit's EER, the less energy it uses, resulting in a lower overall cost of ownership with time.

You'll often find that through-the-wall air conditioners have an EER ranging between 9 and 11. Some units may even have an Energy Star label, which provides a government-backed approval as being high energy efficiency. Energy Star-rated wall air conditioners are an average of 10 percent more efficient, potentially saving hundreds in energy costs each year.

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In-wall units are more efficient than window units because they perfectly fit into the wall without allowing any leakage. This results in cooler air staying in the room and not escaping through gaps and leaks.

Here are some key differences between in-wall and window units:

Wall-mounted units can save on energy and costs compared to central AC units. In fact, Energy Star-certified units use as much as 60% less energy!

Units Need Maintenance

Wall-mounted units require regular maintenance to keep them running efficiently. Homeowners will need to change air filters, check hoses, and clean coils.

Your installer can also conduct routine service on your behalf, which can be a big help.

Considerations and Limitations

Wall-mounted ACs are designed to cool small spaces, such as a sunroom or single bedroom. They’re not designed for high-volume cooling, so only a small space in your home will benefit.

Mini splits are ideal for rooms that you don’t use often, and therefore don’t need to cool all the time. This makes them a great option for guest rooms or home offices.

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Here are some specific things to consider when choosing a wall AC:

  • Won’t work with 110V power outlets
  • Electric heat isn’t as energy-efficient
  • Requires a NEMA 6-20 receptacle

You'll also need to think about the long-term commitment of owning a wall AC. Cutting a large hole in a wall to install it means you'll have to fill and repaint it when you decide to replace it.

Cons

Some wall ACs have limitations when it comes to their power requirements, specifically they won't work with 110V power outlets. This can be a problem if you're planning to use one in a space with limited power options.

You'll also need to consider the type of receptacle needed, as some wall ACs require a NEMA 6-20 receptacle. This can add an extra layer of complexity to the installation process.

In addition, electric heat isn't as energy-efficient as some other options, which may not be ideal for those looking to save on energy costs. This is something to keep in mind when deciding whether a wall AC is the right choice for your needs.

It's worth noting that wall ACs can also be a bit of a hassle to replace, as they require cutting a large hole in the wall, which can be a pain to fill and repaint afterwards.

Whole Home Cooling Limitation

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Wall-mounted ACs are designed to cool small spaces, such as a sunroom or single bedroom. They're not designed for high-volume cooling, so only a small space in your home will benefit.

Mini splits are ideal for rooms that you don't use often, and therefore don't need to cool all the time. This can be a cost-effective solution for rooms that aren't used frequently.

They're most common in rooms that don't have existing ductwork. This can be a significant advantage in certain situations, like when converting a car port into a fully enclosed room.

Additional reading: Compact Window Unit Ac

Frequently Asked Questions

Does a wall AC use a lot of electricity?

A wall-mounted air conditioner typically consumes around 900 watts of electricity per hour, which can impact your energy usage. The energy consumption of a wall AC can vary depending on its capacity and other factors.

What is the AC unit on the wall called?

It's called a wall-mounted ductless air conditioner or mini split system, a convenient and efficient way to cool your space without ductwork.

Do wall-mounted air conditioners need to be vented outside?

Yes, wall-mounted air conditioners require venting to expel hot air outside, ensuring efficient cooling. Proper venting is essential for the unit's performance and to maintain a comfortable indoor temperature.

Roger Molenaar

Senior Writer

Roger Molenaar is a writer who loves to explore the world and write about his experiences. He has been traveling for years, having visited over 50 countries around the globe. His passion for learning about different cultures and meeting new people is evident in his writing, which often features insights into local customs and traditions.

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