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10 Best Air Conditioner 18000 Btu of 2025

Tested and Reviewed: Top 10 Air Conditioner 18000 Btu deals with expert ratings from 8.1 to a perfect 10

May 2026 Edition

Editor's Choice

9.7

Whirlpool

Whirlpool 18,000 BTU 230V Window Air Conditioner with Supplemental Heat, Window Mounted AC Unit with Heater for Apartment, Living Room, Bedroom, Large Rooms up to 1000 Square Feet

Editor's bottom line:

“This air conditioner 18000 btu is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Exceptional Cooling: This powerful 18,000/17,600 BTU window air conditioner with 10600/8600 BTU supplemental heat (not meant to be used as a primary heat source in the coldest months) is best for spaces up to 1000-sq. ft.
Easy Functionality: Electronic control panel with digital display and 3 cooling speeds, supplemental heating, eco mode, sleep mode, and programmable 24 hour on/off timer with 8-way directional air louvers to give multiple options for comfort
Easy to Install: Comes with a quick and effective window mounting kit that allows for easy installation in windows with minimum window height of 19.5 inches
Reusable Filter: The filter on this window air conditioner with heat helps keep the air free of dust, debris, and contaminants, and the filter can easily be removed and washed to help keep your ac heater window unit running at its highest level
Remote Control Included: Adjust your heat and air window unit's settings from across the room with the touch of a button

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Picked by 397 people today

9.5

Frigidaire

Frigidaire 18,000 BTU Smart Window Air Conditioner with Wi-Fi, Cools Up to 1,020 Sq. Ft., Remote Control, Quiet Operation, Eco Mode, 3 Fan Speeds, White

Main Highlights

Wi-Fi Enabled: Easily control your window air conditioner from anywhere with the Frigidaire app or connect it to your Amazon Alexa or Google Home devices for smart, hands-free cooling
Customizable Cooling: Achieve optimal comfort with custom temperature settings, 6-way directional airflow, and three different fan speeds ideal for large living rooms up to 1,020 sq. ft.
Easy Maintenance: Effortlessly adjust settings with the remote control and keep your AC unit working efficiently with Clean Filter alerts that notify you when it's time to clean the washable dust filter
Energy-Efficient Performance: Maintain the set temperature and save money with Eco Mode, conserve energy and enjoy quiet operation with Sleep Mode, and remove excess moisture from the air with Dry Mode
Effortless Convenience: Set the 24-hour on/off timer to match your schedule and benefit from the Auto Restart feature, which automatically restores the units previous settings once power is restored

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9.5

HUMHOLD

Humhold Inverter 16000BTU Portable Air Conditioners with Remote, Free Stand Cooling Portable AC Unit for Room up to 800 sq.ft, with Dehumidifier & Fan, Dual Hose, Quiet Sleep Mode(42dB), Windows Kit

Main Highlights

INVERTER TECHNOLOGY for 40% Energy Saving Engineered with the variable-speed inverter technology, this Portable ac unit saves more 40% energy than traditional ac units by maintains stable temperatures at the desired level and varying the rotation speed of the compressor. With built-in internal temp-sensor and Auto Smart mode,our floor ac unit run between Cool or Fan mode based on the room temperature, Keep the room at the most comfortable temperature around 73F-77F.
16000 BTU Cooling CapacityThis Powerful Portable AC unit owns a fast cooling capacity of 16,000 BTU(ASHRAE) / 12,000 BTU(SACC), has an most energy efficient compressor that can offers 61-86F and more cooling air to 600-800 square feet of large space in your living room, bedroom, apartment, home kitchen,and office, stable and fast way to make you feel cool in the hot seasons.
Dual Hose Design & 42dB Quiet Sleep Mode Our dual hoses design enables the inverter ac unit to intake and exhaust air outdoors faster, forms balanced air circulation indoors and prevents hot outside air from seeping in through gapsCool down your room 30-40% faster. Sleep Mode will maintain an optimal temperature in low fan speed, and provide you less than 42dB quiet bedroom. You can also preset to stop the ac unit after 0.5-24 hours, all these function are designed to give you a cool, quiet and comfortable sleep in the hot summer.
3-in-1 Cooling/Dehumidify/Fan Mode The 16000BTU portable air conditioner offers the convenience of 3 functions, including Cooling, 3-Speed Fan, and Dehumidify, which meets your needs in hot seasons. You can freely adjust the temperature from 61F to 86F in cooling mode. The Dehumidifier capacity of 95 Pints/day can effectively reduce the humidity in small room, and as a Fan to circulate indoor air all the times, removing excess moisture and releasing fresh air for a healthy and comfortable environment.
Remote Control & Auto-Swing Our inverter portable air conditioners is equipped with an easy-to-read Front LED Display and Touch Panelcombined with full-function Remote Control which has LED display with backlight, and up to 25 feets control distance. Built-in more powerful and upgraded 3-speed fan systemwith 15-75° Wide-angle auto-swing function,fast cooling down your room in all directions, you can enjoy the cooling air while sitting on the sofa or lying on bed, all for your convenience.The Remote requires 2pcs AAA 1.5V dry batteries (package not included).
No Need To DrainWith Built-in water self-evaporation system, there is no need to drain water for daily use, the water will auto-evaporate through air hose. If it is placed in humid room such as basement, laundry room, or use its dry mode, it needs to drain every 8 hours or Continuous drainage, or the ac unit will stop for the water tank inside is full, you can unplug the drain plugs on the back and connect water pipe to drain (package included), then start the machine again. The filters are designed to easy disassemble without any tools and can be washed directly by water flushing.
Easy to Move & Install This floor free stand up air conditoning machine comes with 4pcs heavy-duty wheels and hidden handles on both sides so you can easily move the machine to any room. Windows sealing kit and exhaust hose need to be installed, all are included in the package, and fit most Sliding vertical window and horizontal windows. Easy 3 steps to install: First attach sealing foam to the windows, Step 2, adjust the length of window panels and install, Step 3 insert adapters of the exhaust hose to the ac units and windows board, finished and start.

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9.2

BLACK+DECKER

BLACK+DECKER Window or Through The Wall Air Conditioner 18000 BTU, AC Window Unit Cools Up to 1000 Square Feet, Window AC Unit with Remote Control, 3 Cooling Speeds and Fan Only, BD18WT6, White

Main Highlights

Keeps Rooms Cool: 18,000 BTU window air conditioner unit will keep your home cool and comfortable. This window unit AC runs at four levels: auto, low, medium and high to ensure optimal indoor relief
For Larger Rooms & Living Spaces: Our window ac units offer consistent and effective cooling for spaces up to 1,000 square feet. Perfect for whole floors, offices, living spaces and apartments
Full Function Remote Control: Control every setting and function on the easy-to-use remote control. Window unit air conditioner features sleep mode, energy saver, 24-hour timer and more
Easy Window Installation: Accordion style window air conditioner side panels for easy installation ensure the AC unit fits standard double hung windows from 28" to 40.5" wide and as low as 18.5" H
Through The Wall Installation: Wall sleeve and parts included with this window AC unit. Through-the-wall installations and electrical wiring should be performed by a licensed professional

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9.0

ROVSUN

ROVSUN 18000 BTU Air Conditioner Window Unit, 3-in-1 Window AC Unit Cooler, Dehumidifier & Fan with Timer, Remote Control & Installation Kit, Cooling Rooms up to 1000 Sq. Ft, 230V/60Hz, White & Grey

Main Highlights

Quick CoolingThe 18,000 BTU window air conditioner is ideal for cooling compact rooms up to 1000 square feet. Quickly cool your room such as home, office or apartment
Easy to OperateOperating this air conditioner is an easy-to-understand and enjoyable cooling experience (61°F - 88°F). We can set all functions (sleep mode, fan speed selection, 24-hour timer, ECO mode, automatic mode and fan mode) on the LED digital display or remote control
Easy to AssembleThe included side panels and other mounting parts can save you a lot of assembly time. Detailed instruction manual makes assembly easy in a short time (please confirm window size before purchasing)
Energy SavingThis 230V/60Hz energy-saving air conditioner uses a high-quality compressor for more efficient cooling and longer working life; environmentally friendly design, allowing you to save money
Quiet OperationWith noise levels as low as 54 dB, this window air conditioner lets the fan cool your space at a gentle volume without disturbing your surroundings. Whether you're watching your favorite TV series, reading a good book, or sleeping, this air conditioner will help you relax better!

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8.8

KoolSiln

14,000 BTU Portable Air Conditioner Cools Up to 700 Sq.Ft, Auto-Evaporation Low Noise Portable AC Unit with Remote Control Fits for Large Room, Office, Garage, White

Main Highlights

.14,000 BTU cooling with an enlarged 77° air outlet, using eco-friendly R32 refrigerant for faster, greener cooling. No more waiting hours to escape the heatcools rooms from 90 to 61°F in just a short time. Compact and energy-saving, it balances rapid cooling with quiet operation for year-round comfort
Designed for light sleepers, our noise-reduction technology keeps sound levels as low as 48dBquieter than a library conversation. Activate Sleep Mode to dim the display, reduce fan noise, and maintain your ideal temperature all night without disruptions
360° Auto-Evaporation Tech converts 80% excess water into cool air while you sleep. No wet messes. Just set the 8-hour sleep timer and more time enjoying!
Easily switch between cooling, fan, and dehumidifier modes to meet your need and save you the hassle of buying separate appliances
- Adjust settings like temperature, modes, and fan speed via the clear LED display or included remote (23ft range). Also with 360°wheels and dual handles enables room-to-room movement. The removable air filter on the back keeps circulating clean air
Our ac unit have passed the DOE certification. Also offers 30-day money-back, 1 year+ warranty, and lifetime tech support. Contact us via Amazon for issue resolution
- Install this portable air conditioner for rooms in minutes: Attach the exhaust hose, secure the adjustable window bracket, and plug it in. No drilling requiredideal for most vertical windows & horizontal windows (20.47"-67")

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8.6

LG

LG 18,000 BTU Dual Inverter Smart Window Air Conditioner, 230V, Cools 1,000 Sq. Ft. for Bedroom, Living Room, Apartment, Ultra Quiet Operation, Energy Star®, with LG ThinQ, Amazon Alexa & Hey Google

Main Highlights

Air Conditioner with Smart Phone Control: The LG ThinQ App lets you control your window ac unit from anywhere using your smartphone, Google Assistant or Amazon Alexa; Operate while on the go
Low Noise Performance: LG room air conditioners operate at sound levels as low as 52dB (in low mode) eliminating unnecessary noise; Get a good night's sleep and work without distraction with this inverter ac
Energy Star Certified Window Air Conditioners: This ac unit has met the high standards of the Energy Star Program using energy-efficient technologies that translate into electricity savings
Multiple Fan Speeds: 3 cooling and fan speeds with Auto Cool allow you to customize your cooling; Effortlessly adjust the ac inverter air flow to suit your needs
Cools Rooms up to 1000 Square Feet: LW1817IVSM is ideal for cooling large rooms (25' X 40'); With the 1,000 square feet cooling coverage, keep your bedroom, office, or multiple small rooms on the same floor comfortably cool with this inverter ac unit

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8.3

ROVSUN

ROVSUN 18000 BTU Window Air Conditioner with Heat, Window AC Unit & Heater Combo with APP & Voice Smart Control, Timer Function & Easy Installation Kit, Work with Alexa/Google Assistant, 208/230V

Main Highlights

Fast Cooling & Heating: Dive into an all-season solution with our window AC and heater system, this 18000BTU unit featuring air conditioning, heating, dehumidifier & fan function for ideal climate control of room up to 1000 square feet. Perfect choice for your room like home, office, or apartment
Considerate Designs: This air conditioner & heater unit comes with an LED display, 5 modes (Heat, Auto, Cool, Dry, Fan), 3 speeds (Auto/H/M/L), 24H Timer and ECO energy-saver. Washable filter is easily accessed from front panel for regular cleaning to maintain peak performance. The swing button adjusts the louvers to direct the airflow. Easily create the perfect environment for multi-seasons
WIFI-Enabled & Voice Control: Beside of the panel & remote control, seamlessly integrate with phone APP or voice control (works with Alexa/Google Assistant); Set routines for optimal temperature changes allows you to adjust your window air conditioner from anywhere so that you can enjoy endless comfort immediately once arriving home
Simple Installation: Included with side panels and other installation parts save you a lot of assembly time. A detailed instruction manual makes assembly easily done in a short period (windows width: 28" - 41"; window height: 19")
100% Satisfaction: We do cover 1 year warranty on this ac unit. We are confident to stand behind our product and would like to guarantee you a best shopping experience with us

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8.1

DOMANKI

Inverter 16000 BTU Portable Air Conditioner, 3 in 1 Portable Ac Unit Cools Up for Rooms 850 Sq. Ft, Dual Hose Standing AC for Bedrooms with Dehumidifier, Fan, Quiet Sleep Mode, Remote Control

Main Highlights

Efficient Inverter Tech, 40% Energy Saved This 16,000 BTU ASHRAE (12,000 BTU SACC), DOE ETL certified powerful portable air conditioner utilizes an innovative inverter technology that saves up to 40% of electricity and increases the lifespan of the unit versus standard portable ac units. Its inverter compressor can adjust operating speed to achieve efficient cooling while maintaining stable room temperature and reducing energy consumption. And with maximum air speeds up to 470m³/h, the energy efficient portable ac inverter can set room temperatures from 61°F to 86°F in mins for rooms up to 850 Sq.Ft.such as boats, temporary spaces, flats, offices, and even entire rooms or large bedrooms
Auto Evaporation & Dual Hose DesignThe indoor air conditioner upgrades the original condensate evaporation system to automatically discharge condensate in 85% of the environments; Additionally, its dual-duct design not only efficiently brings in fresh air and exhausts heat, but also creates balanced room circulation that prevents outdoor heat from seeping inresulting in more effective cooling and lower energy consumption
4 Smart ModesThe inverter room air conditioner features 4 distinct modes: Cool, Dry (Dehumidify), Fan, and Auto. In addition, the air conditioner portable is equipped with humidity settings, 4 available fan speeds (low/medium/high/auto), auto swing (15-75° Wide-angle), sleep mode (42dB), 24-hour timer, child lock, and turbo function to meet various needs
Remote Control & Smart SensorsThe portable ac units for rooms features an LED display and comes with a full-function remote control with an operational range of up to 25 feet, allowing you to comfortably operate the portable air conditioners from your couch or bed. It is also equipped with 360° caster wheels and a built-in carry handle for easy movement between rooms. Additionally, it includes a removable and washable filter to ensure optimal indoor air quality for you and your family. The Remote control requires 2pcs AAA 1.5V dry batteries (package not included).
42dB Quite Sleep Mode & 24H TimerThis portable air conditioner utilizes the latest dual-motor inverter technology and noise-reduction design. In Sleep Mode, it automatically lowers fan speed, adjusts to the ideal temperature using built-in sensors and smart automation, and dims the display panelall while operating at a quiet volume as low as 42 dB(A). Additionally, the inverter freestanding portable ac unit flexible 0.5 to 24-hour timer allows customized on/off scheduling, and when paired with the remote controls soft backlit screen, it ensures a comfortable and quiet sleep environment while saving even more energy
Easy InstallationMeasuring 14" W × 27" H × 16.5" D, this portable air conditioners comes with a complete adjustable window installation kit compatible with both vertical and horizontal sliding windows. The portable air conditioners for bedroom can be easily installed in your home or apartment windows (fits standard windows up to 60 inches wide) without requiring any drilling into the window frame

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8.1

Frigidaire

Frigidaire 115V 18000 BTU Smart Window Air Conditioner with 16000 BTU Heater, Dehumidifier, Fan, Wi-Fi & Remote Control, Quiet Energy Efficient AC Unit for Home Heating Cooling, Cools Up To 1000 Sq Ft

Main Highlights

Total Temperature Control: This 18,000 BTU window air conditioner cools rooms up to 1020 sq ft, and offers a supplemental heater to help take the chill off during the colder months
Keep The Air Flowing: Switch the AC unit to fan mode to help air circulate throughout the room with 6-way multidirectional airflow; choose between 3 speeds to find the best balance for your space
Control from the Couch: Use the included remote control to adjust your energy efficient window air conditioners settings from afar without having to get up
Additional Features: Align your cooling with your daily schedule with the window units programmable 24-hour timer, and use sleep mode to optimize temperature and efficiency during the wee hours
Easy Installation: Get this window AC up and running right out of the box with its step-by-step easy install instruction manual

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Our Best Overall Choice

Best Choice

9.7

Whirlpool

Whirlpool 18,000 BTU 230V Window Air Conditioner with Supplemental Heat, Window Mounted AC Unit with Heater for Apartment, Living Room, Bedroom, Large Rooms up to 1000 Square Feet

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Exceptional Cooling: This powerful 18,000/17,600 BTU window air conditioner with 10600/8600 BTU supplemental heat (not meant to be used as a primary heat source in the coldest months) is best for spaces up to 1000-sq. ft.
Easy Functionality: Electronic control panel with digital display and 3 cooling speeds, supplemental heating, eco mode, sleep mode, and programmable 24 hour on/off timer with 8-way directional air louvers to give multiple options for comfort
Easy to Install: Comes with a quick and effective window mounting kit that allows for easy installation in windows with minimum window height of 19.5 inches
Reusable Filter: The filter on this window air conditioner with heat helps keep the air free of dust, debris, and contaminants, and the filter can easily be removed and washed to help keep your ac heater window unit running at its highest level
Remote Control Included: Adjust your heat and air window unit's settings from across the room with the touch of a button

Show Price

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