Battling the heat in a large room or open-concept living area can feel like a losing battle. Window air conditioners often block your view and aren’t powerful enough, while central AC might be overkill or unavailable. That’s where a high-capacity wall-mounted air conditioner comes into its own! These clever units offer robust cooling, often with supplemental heating, without sacrificing your window space.
Finding the best wall mounted air conditioner for large space means balancing BTU power, energy efficiency, and smart features with your specific needs. You want a unit that can effectively cool a vast area, provide consistent comfort, and ideally, save you a few bucks on your energy bill.
We’ve scoured the market to bring you a comprehensive review of the top 10 wall-mounted AC units designed to tackle those spacious zones. Let’s dive in and find the perfect climate control solution for your home!
Why Choose a Wall-Mounted AC for Large Spaces?
Wall-mounted air conditioners, particularly through-the-wall units, offer several compelling advantages for larger areas:
- Unobstructed Views: Unlike window units, they don’t block your natural light or scenic outlook.
- Powerful Cooling: Many models boast high BTU ratings, specifically designed to cool expansive square footage efficiently.
- Space-Saving Design: They free up floor space, which is always a plus in any room, especially one that’s already sizable.
- Supplemental Heating: A lot of these units come with heating capabilities, making them year-round climate control solutions.
- Enhanced Security: No open windows mean better home security.
Key Factors to Consider When Buying
Before you pick the best wall mounted air conditioner for large space, keep these points in mind:
- BTU Rating: This is crucial! As a general rule, you need 20 BTUs per square foot. For a large space (e.g., 500-700 sq.ft.), you’re looking at 12,000 to 14,000 BTUs or more.
- Coverage Area: Always check the manufacturer’s recommended room size to ensure it matches your space.
- Installation Type: Most units reviewed here are through-the-wall, requiring an opening in your exterior wall. This is different from ductless mini-splits, which have an outdoor compressor.
- Energy Efficiency Ratio (EER): A higher EER means more efficient cooling and lower electricity bills. Look for Energy Star certified models.
- Supplemental Heat vs. Primary Heat: Many units offer supplemental heating. Understand this is for mild weather or taking the chill off, not as a primary heating source in very cold climates.
- Smart Features: Remote controls, Wi-Fi connectivity, programmable timers, and eco modes add convenience and energy savings.
- Noise Level: While wall units are generally quieter than window units, check decibel ratings if quiet operation is a priority.
Our Top 10 Picks for Wall-Mounted Air Conditioners for Large Spaces
Let’s explore the best options available right now!
1. Keystone 14,000 BTU Wall Mounted Air Conditioner with Supplemental Heat
This Keystone unit is a true workhorse, perfect for those extra-large living areas that demand serious cooling power. Its substantial 14,000 BTU cooling capacity, paired with robust supplemental heating, means you’ll stay comfortable no matter the season. What really makes it stand out is its ability to cover up to 700 sq.ft. while offering smart features like a remote that senses the room’s actual temperature.
Key Features:
– Powerful 14,000 BTU cooling capacity / 10,600 BTU supplemental heating capacity
– Efficiently cools and heats large spaces up to 700 Sq.Ft.
– Offers cooling, heating, dehumidification, and fan circulation modes
– Space-saving wall-mounted design keeps window views clear
– Requires a special 230-volt/20-amp electrical outlet
– Smart remote control with LCD screen for accurate temperature sensing
– Energy-saving ‘Energy Saver’ and ‘Sleep’ modes
Pros:
– Excellent cooling and heating power for very large rooms
– Versatile 4-in-1 functionality (AC, heat, fan, dry)
– Smart remote enhances comfort and temperature accuracy
– Energy-saving features help reduce utility costs
– Maintains your window view and floor space
Cons:
– Requires professional installation due to wall sleeve and dedicated 230V outlet
– Supplemental heat is not for primary heating in severe cold
User Impressions:
Customers rave about this unit’s sheer power and how effectively it cools and heats expansive areas. Many appreciate the smart remote’s ability to maintain precise temperatures where they are, not just at the unit itself. While installation can be an undertaking, users feel it’s a worthwhile investment for year-round comfort.
2. Keystone 12,000 BTU Wall Mounted Air Conditioner with Supplemental Heat
Ideal for slightly smaller but still significant spaces (up to 550 sq.ft.), this 12,000 BTU Keystone unit offers the same reliable performance and smart features as its larger sibling. It’s a fantastic choice for large bedrooms, open-plan studio apartments, or spacious offices where you need consistent climate control without monopolizing window or floor space.
Key Features:
– 12,000 BTU cooling capacity / 10,600 BTU supplemental heating capacity
– Suitable for rooms up to 550 Sq.Ft.
– Functions as an AC, heater, dehumidifier, and fan
– Space-saving design with easy interior trim kit installation
– Operates on a dedicated 230-volt/20-amp electrical outlet
– Smart remote control provides accurate, real-time temperature readings
– Includes ‘Energy Saver’ and ‘Sleep’ modes for efficiency
Pros:
– Strong cooling and heating for medium-large rooms
– All-in-one unit for year-round comfort
– Remote’s “follow me” feature ensures comfort in your immediate area
– Energy-efficient modes save on electricity bills
– Frees up windows and floor space
Cons:
– Requires a specific electrical outlet, potentially needing an electrician
– Heating function is supplemental, not a primary heat source
User Impressions:
Users frequently praise this model for its ability to quickly cool down large rooms and maintain a comfortable environment. The quiet operation and the convenience of the smart remote are often highlighted as significant benefits, making it a favorite for those needing robust, discreet cooling.
3. ROVSUN 8000 BTU Through the Wall Air Conditioner with Heat
The ROVSUN 8000 BTU unit is a versatile through-the-wall solution, particularly well-suited for spaces up to 350 sq.ft. like master bedrooms, offices, or smaller large rooms. Its combination of cooling and heating, along with multiple modes, provides complete climate control. What’s really appealing is its claim of quick DIY installation, making it a more accessible option for handy homeowners.
Key Features:
– 8000 BTU cooling and heating capacity
– Provides climate control for spaces up to 350 sq.ft.
– Dual control via intuitive LED panel or remote control
– 4 versatile modes: Cool, Heat, Fan, Dry with 3 fan speeds
– 24-hour timer for programmed operation
– Easy-clean, removable front-panel filter
– Designed for quick DIY installation (fits standard 25.5″ wall sleeves, sleeve not included)
Pros:
– Effective cooling and heating for its size
– User-friendly controls and remote convenience
– Multiple modes offer great versatility for different seasons
– Easy filter cleaning promotes better air quality and longevity
– Relatively straightforward installation process for a through-the-wall unit
Cons:
– 8000 BTUs might be borderline for very large spaces (e.g., above 350 sq.ft.)
– Wall sleeve is not included, requiring a separate purchase
– Supplemental heat, as with most, isn’t a primary heat source
User Impressions:
Customers often comment on the strong performance for its BTU rating, noting its quick ability to cool down rooms. The ease of cleaning the filter and the straightforward installation process are frequently mentioned positives, making it a popular choice for hassle-free climate management.
4. Keystone 10,000 BTU 230V Wall Mounted Air Conditioner with Supplemental Heat
This 10,000 BTU Keystone unit hits a sweet spot for medium to large rooms up to 450 sq.ft., offering powerful cooling and supplemental heat. It shares many of the excellent features found in its higher-BTU siblings, including the smart remote and energy-saving modes. If you need reliable, year-round comfort for a sizable space without the highest BTU demand, this is a strong contender.
Key Features:
– 10,000 BTU cooling capacity / 10,600 BTU supplemental heating capacity
– Ideal for rooms up to 450 Sq.Ft.
– All-in-one unit: cooling, supplemental heating, dehumidification (up to 2.3 pints/hour), fan
– Space-saving wall-mounted design with standard universal interior trim kit
– Smart remote control with room temperature sensing
– ‘Energy Saver’ and ‘Sleep’ modes for reduced power consumption
Pros:
– Good balance of cooling and heating power for medium-large rooms
– Efficient dehumidification helps control humidity levels
– Smart remote ensures comfort where you are
– Energy-efficient modes contribute to lower utility bills
– Seamless integration with standard trim kits for a clean look
Cons:
– Requires a 230V outlet, potentially needing electrical work
– Heating function is supplemental only
– May not be sufficient for rooms significantly larger than 450 sq.ft.
User Impressions:
Users appreciate the quiet operation and the consistent cooling and heating this unit provides. Many find the smart remote a game-changer for maintaining perfect comfort. Its robust dehumidification capabilities are also a frequently praised feature.
5. Wall Mounted Air Conditioner/Thermo Fan Heater – Portable Multi-Season Comfort
This particular unit, designed as a “Wall Mounted Air Conditioner/Thermo Fan Heater,” offers a unique blend of functions. While it markets “air conditioner” functionality, it primarily excels as a versatile heater with a fan for natural airflow cooling. It’s a great space-saver, mounting directly to the wall, and stands out for its quiet operation and portability, allowing you to potentially relocate it.
Key Features:
– Wall-mounted design with anti-overheating protection
– User-friendly control panel for temperature and fan speed adjustments
– Whisper-quiet performance, even at maximum speeds
– Designed for mobility, allowing relocation between rooms
– Versatile multifunctionality: provides heating and natural airflow cooling
Pros:
– Excellent heating capabilities for colder months
– Ultra-quiet operation makes it ideal for bedrooms or offices
– Wall-mounted design saves valuable floor space
– Anti-overheating protection enhances safety
– Portable nature offers flexibility for use in different areas
Cons:
– Important Note: The “cooling” function is primarily fan-based, providing natural airflow, not refrigerant-based cooling like traditional ACs. It may not effectively cool a large space in hot climates.
– Not a true air conditioner for significant temperature reduction.
– Coverage area for cooling is limited due to fan-based nature.
User Impressions:
Customers highly value this unit for its strong, consistent heating and its surprisingly quiet operation. Many find its wall-mounted, space-saving design very practical. However, it’s crucial to understand that its “cooling” refers to fan airflow, not refrigeration, which some users might misunderstand if they’re expecting a traditional AC.
6. Keystone 12,000 BTU Wall Mounted AC Unit and Dehumidifier, 115V
This Keystone 12,000 BTU unit focuses specifically on powerful cooling and dehumidification for spaces up to 550 sq.ft., and unlike some others, it runs on a standard 115V outlet. It’s perfect for those who prioritize robust cooling and humidity control without needing supplemental heating or a specialized electrical setup. Its multi-directional airflow and smart remote ensure maximum comfort.
Key Features:
– Powerful 12,000 BTU cooling capacity
– Efficiently cools spaces up to 550 Sq.Ft.
– Built-in dehumidification system removes up to 2.5 pints of moisture per hour
– 3 cooling modes, 3 fan speeds, 4-way adjustable air louvers
– Programmable timer for convenience
– Space-saving wall-mounted design with standard universal interior trim kit
– Smart remote control with ‘follow me’ temperature sensing
– ‘Energy Saver’ and ‘Sleep’ modes for efficient operation
Pros:
– Strong cooling power for large rooms on a standard 115V outlet
– Excellent dehumidification capabilities
– Customizable airflow with adjustable louvers and multiple fan speeds
– Smart remote ensures targeted comfort
– Energy-efficient features help save on electricity
Cons:
– Does not include supplemental heating, focusing solely on cooling/dehumidification
– Requires proper wall sleeve installation for through-the-wall design
User Impressions:
Reviewers are consistently impressed by this unit’s cooling prowess and its ability to significantly reduce humidity, making even muggy days feel comfortable. The convenience of a 115V connection and the precision of the smart remote are frequently praised.
7. ROVSUN Smart 8000 BTU Through the Wall Air Conditioner with Wi-Fi & Voice Control
The ROVSUN Smart 8000 BTU unit elevates climate control with cutting-edge technology. Perfect for rooms up to 350 sq.ft., it offers fast cooling and heating, but its standout feature is Wi-Fi connectivity and voice control compatibility with Alexa/Google Assistant. Imagine adjusting your room’s temperature from anywhere using your phone – that’s convenience redefined!
Key Features:
– 8000 BTU air conditioning / 4200 BTU heating / dehumidifier & fan functions
– Ideal for spaces up to 350 sq.ft.
– LED display with 5 modes (Heat, Auto, Cool, Dry, Fan) and 3 fan speeds
– 24H Timer and ECO energy-saver mode
– Washable front-panel filter and swing button for airflow direction
– WIFI-Enabled & Voice Control (works with Alexa/Google Assistant) for remote management
– Simple installation (fits standard 25.5” wide sleeve, sleeve not included)
Pros:
– Smart home integration (Wi-Fi, voice control) for ultimate convenience
– Fast cooling and heating for year-round comfort
– Energy-saver mode helps reduce operational costs
– Easy-to-clean filter maintains air quality
– Versatile modes and fan speeds for personalized comfort
Cons:
– 8000 BTUs might be too low for very large spaces above 350 sq.ft.
– Wall sleeve not included, requiring separate purchase
– Smart features rely on a stable Wi-Fi connection
User Impressions:
Customers love the modern convenience of Wi-Fi and voice control, finding it incredibly handy for adjusting settings before arriving home or from the couch. The unit’s fast cooling and heating capabilities are also frequently highlighted, alongside the ease of maintenance.
8. Frigidaire Through-the-Wall Room Air Conditioner, 12,000 BTU, Remote Control
Frigidaire is a trusted name in home appliances, and their 12,000 BTU Through-the-Wall Air Conditioner lives up to that reputation. Designed for rooms up to 550 square feet, it provides powerful, consistent cooling. This unit is built for durability and ease of maintenance, featuring a slide-out chassis for straightforward installation and servicing, making it a reliable choice for long-term comfort.
Key Features:
– Delivers 12,000 BTUs of cooling power, ideal for rooms up to 550 sq.ft.
– Wall-mounted design with slide-out chassis for easy installation and maintenance
– Washable mesh filter captures dust and keeps the unit running efficiently
– Programmable 24-hour on/off timer with Sleep Mode
– Three cooling and fan speed settings for customizable airflow
– Auto Restart automatically resumes operation after power interruptions
Pros:
– Powerful and reliable cooling for large rooms
– Easy installation and maintenance thanks to slide-out chassis
– Durable construction from a reputable brand
– Programmable timer and Sleep Mode enhance convenience and energy savings
– Customizable fan speeds for personalized comfort
Cons:
– Primarily a cooling unit; does not offer supplemental heating
– Requires a through-the-wall sleeve (not always included) and professional installation
– Not suitable for window installation
User Impressions:
Users consistently praise the Frigidaire unit for its robust cooling capacity and its ability to quickly bring down the temperature in large rooms. The easy-to-clean filter and the convenience of the remote control are frequently mentioned as positive attributes, along with its overall reliability.
9. LG LT1016CER 9,800 BTU 115V Remote Control Through-The-Wall Air Conditioner
The LG LT1016CER offers efficient cooling with a 9,800 BTU capacity, suitable for rooms up to 450 sq.ft., all on a standard 115V electrical connection. It’s an Energy Star certified unit, meaning it’s designed to save you money on your electricity bills while providing consistent comfort. LG’s focus on user-friendly features like multiple fan speeds and an easy-clean filter makes it a practical choice.
Key Features:
– Energy Star certified with a 10.6 Energy Efficiency Ratio (EER)
– 9,800 BTUs cools rooms up to 450 sq.ft.
– Through-the-wall installation (not suitable for window installation)
– 3 cooling speeds / 3 fan speeds for flexible cooling options
– Easy-clean mesh filter with a “clean filter” alert
– Wattage: 920 watts
Pros:
– Highly energy efficient (Energy Star certified)
– Good cooling capacity for medium-large rooms
– Operates on a standard 115V outlet
– Easy to maintain with a washable filter and alert system
– Flexible fan and cooling speeds for customized comfort
Cons:
– Does not include heating functionality
– May not be powerful enough for rooms significantly larger than 450 sq.ft.
– Installation requires a wall sleeve and cutout
User Impressions:
Customers frequently highlight the LG unit’s energy efficiency and how effectively it cools their spaces without significantly impacting their electricity bills. The quiet operation and straightforward controls are also commonly praised, making it a solid choice for reliable cooling.
10. Bath Fan Heater Combo, 3 in 1 Wall Mount Heat and Natural Airflow Unit
This “Bath Fan Heater Combo” unit is a unique wall-mounted solution that prioritizes heating and drying capabilities, especially for bathroom environments, while offering natural airflow for cooling. It’s designed to maximize space with its wall-mounted feature and even includes a towel rack. While it offers “natural wind cooling,” it’s primarily a powerful heater and fan, not a traditional refrigerant-based air conditioner.
Key Features:
– 3-in-1 Wall Mount Heat and Natural Airflow Unit (not traditional AC cooling)
– High-power portable design with large air outlet for quick heating
– Functions as a heater, natural wind cooler, and dehumidifier for damp towels/clothes
– Wall-mounted design with a detachable hanging rack for towels
– Quiet operation in sleeping & mute mode, with an 8-hour timer
– Built-in overheating protection for safety
Pros:
– Excellent heating power, especially suitable for bathrooms or small rooms
– Space-saving wall-mounted design with convenient towel rack
– Quiet operation for undisturbed comfort
– Safety features like overheating protection
– Natural airflow provides some relief in warmer weather and aids drying
Cons:
– Critical Note: The “cooling” function is provided by natural airflow (fan), not refrigerant-based air conditioning. It will not significantly lower ambient temperatures in a large space like a true AC.
– Not recommended if your primary need is powerful, temperature-reducing air conditioning for a large room.
– More suited as a supplemental heater/drying unit with fan function.
User Impressions:
Users absolutely love this product for its powerful heating capabilities, especially in bathrooms, and the convenient towel drying rack. Its quietness and wall-mounted design are also major plus points. However, it’s frequently noted that the “cooling” is more akin to a fan than a true air conditioner, which is important for potential buyers to understand.
FAQ Section
Q1: What BTU rating do I need for the best wall mounted air conditioner for large space?
A1: For large spaces, you’ll generally need between 12,000 to 14,000 BTUs or more. A common rule of thumb is 20 BTUs per square foot. For example, a 600 sq.ft. room would need around 12,000 BTUs. Always measure your space and consult a BTU calculator for a precise recommendation, considering factors like ceiling height, sun exposure, and insulation.
Q2: Are wall-mounted ACs energy-efficient for large rooms?
A2: Yes, many high-quality wall-mounted ACs designed for large spaces are quite energy-efficient. Look for models with a high Energy Efficiency Ratio (EER) or Energy Star certification. Features like programmable timers, eco modes, and smart temperature sensors also help optimize energy usage by only running when needed and at optimal settings.
Q3: What’s the difference between a through-the-wall AC and a ductless mini-split system?
A3: A through-the-wall AC is a self-contained unit installed in an opening in your exterior wall, similar to a window AC but designed for a wall sleeve. A ductless mini-split system has an indoor unit mounted on the wall and connected via a conduit to an outdoor compressor unit. Mini-splits are generally more energy-efficient and quieter but require a more complex installation involving refrigerant lines. This article focuses primarily on through-the-wall units.
Q4: Can a wall-mounted air conditioner also provide heat for a large room?
A4: Many wall-mounted air conditioners offer supplemental heating, which is great for taking the chill off during milder weather. However, it’s important to understand that “supplemental heat” is not typically designed as a primary heating source for severe cold. Always check the BTU rating for heating and the manufacturer’s recommendations for outdoor operating temperatures.
Q5: Is installation of a through-the-wall AC difficult?
A5: Installing a through-the-wall AC involves creating an opening in an exterior wall and installing a wall sleeve, which requires some carpentry, electrical work (especially for 230V units), and sealing to prevent leaks. While some units claim “DIY-friendly” installation, it’s often a job best left to professionals to ensure proper fit, sealing, and electrical safety, especially for masonry walls.
Q6: How do I maintain my wall-mounted air conditioner?
A6: Regular maintenance is key for optimal performance and longevity. This typically involves:
– Cleaning or replacing the air filter every 2-4 weeks (or as recommended by the manufacturer).
– Wiping down the exterior of the unit.
– Keeping the outdoor grille clear of debris.
– Periodically checking and cleaning the drainage pan to prevent mold and mildew.
– For more extensive cleaning, especially coils, professional servicing might be needed every few years.
Q7: Are wall-mounted AC units noisy?
A7: Wall-mounted ACs are generally quieter than comparable window units because their compressor (the noisy part) is located within the wall. However, noise levels can vary between models. Look for units that specify a low decibel (dB) rating if quiet operation is a high priority for your large space. Features like “Sleep Mode” often reduce fan speed and noise.
Conclusion
Choosing the best wall mounted air conditioner for large space doesn’t have to be a daunting task. By considering the BTU rating, energy efficiency, and desired features like supplemental heating or smart controls, you can find a unit that perfectly fits your home’s needs. Whether you prioritize sheer cooling power, energy savings, or smart home integration, there’s a wall-mounted AC on our list ready to deliver year-round comfort.
Don’t let a large room dictate your comfort. Invest in a powerful, efficient wall-mounted air conditioner and enjoy a perfectly chilled (or heated) environment, all while keeping your windows clear and your floor space free. Happy cooling!