Best LG 18000 BTU AC Heater Combo Window Unit in 2025
Updated on July 2025
#1
Recommended
8% Off
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- 18,000 BTU cooling capacity and 16,000 BTU heating capacity for large spaces up to 1,000 sq. ft.
- Multi-functional unit offering cooling, supplemental heating, dehumidification, and fan modes; supplementary heating designed for outdoor temperatures between 23°F and 76°F.
- Smart remote monitors room temperature and communicates with the air conditioner every 3 minutes for precise climate control.
- Energy-efficient operation with 'Energy Saver' and 'Sleep' modes reduces electricity costs.
- Compact design with included window installation kit saves floor space.
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- 18,000 BTU cooling capacity and 16,000 BTU heating capacity for large spaces up to 1,000 sq. ft.
- Multi-functional unit offering cooling, supplemental heating, dehumidification, and fan modes; supplementary heating designed for outdoor temperatures between 23°F and 76°F.
- Smart remote monitors room temperature and communicates with the air conditioner every 3 minutes for precise climate control.
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#2
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- Covers areas up to 1,500 sq. ft. for cooling and 700 sq. ft. for heating; features three fan speeds and four operation modes with a 24-hour timer; has 4-way air directional louvers.
- Removes moisture at a rate of 137 pints per day; offers 16,000 BTU heating and 25,000 BTU cooling capacities.
- Requires a 30 Amp, 230 Volt breaker for operation; compatible with LCDI 6-30P plug type.
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- Covers areas up to 1,500 sq. ft. for cooling and 700 sq. ft. for heating; features three fan speeds and four operation modes with a 24-hour timer; has 4-way air directional louvers.
- Removes moisture at a rate of 137 pints per day; offers 16,000 BTU heating and 25,000 BTU cooling capacities.
- Requires a 30 Amp, 230 Volt breaker for operation; compatible with LCDI 6-30P plug type.
#3
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- AC heater window unit with supplemental heating option for added warmth during cooler days and requires a special 230/208V LCDI plug (NEMA 6 - 20) for operation
- Offers 2 cooling and heating fan speeds for adjustable airflow based on user preference
- Features easy-to-use digital control panel and remote; includes 4-way air deflection, 24-hour timer, filter light reminder, installation kit, and a removable, washable filter for convenience
- Auto Restart function that automatically resumes operation after a power outage
- Effective for cooling spaces up to 1,000 square feet, suitable for medium-sized rooms such as bedrooms, offices, or multiple small rooms
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- AC heater window unit with supplemental heating option for added warmth during cooler days and requires a special 230/208V LCDI plug (NEMA 6 - 20) for operation
- Offers 2 cooling and heating fan speeds for adjustable airflow based on user preference
- Features easy-to-use digital control panel and remote; includes 4-way air deflection, 24-hour timer, filter light reminder, installation kit, and a removable, washable filter for convenience
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#4
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- Smartphone control via LG ThinQ app allows remote operation using Google Assistant or Amazon Alexa.
- Quiet operation at sound levels as low as 52dB ensures minimal disturbance during use.
- Energy Star certified for efficient energy use, leading to reduced electricity costs.
- Three adjustable cooling and fan speeds provide customizable comfort.
- Effective cooling for spaces up to 1000 square feet, suitable for large rooms or multiple smaller areas.
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- Smartphone control via LG ThinQ app allows remote operation using Google Assistant or Amazon Alexa.
- Quiet operation at sound levels as low as 52dB ensures minimal disturbance during use.
- Energy Star certified for efficient energy use, leading to reduced electricity costs.
- Three adjustable cooling and fan speeds provide customizable comfort.
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#5
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- 8000 BTU window air conditioner and heat unit designed for large rooms up to 350 square feet, offering both cooling and supplemental heating capabilities.
- User-friendly with LED display, multiple function modes (Heat, Auto, Cool, Dry, Fan), adjustable airflow louvers, and smart home integration via the SmartHome App, Alexa, and Google Assistant.
- Energy Star certified for efficiency, featuring variable-speed inverter technology that reduces electricity usage by up to 35% and includes a washable filter for easy maintenance.
- Operates at a quiet noise level of 45 dBA, suitable for work, relaxation, and sleep, while providing beneficial white noise.
- Fits double hung windows with openings between 24 to 38.5 inches; includes installation kit and measures 19.41"W x 22.17"D x 13.9"H.
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- 8000 BTU window air conditioner and heat unit designed for large rooms up to 350 square feet, offering both cooling and supplemental heating capabilities.
- User-friendly with LED display, multiple function modes (Heat, Auto, Cool, Dry, Fan), adjustable airflow louvers, and smart home integration via the SmartHome App, Alexa, and Google Assistant.
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#6
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- 18,000/17,600 BTU cooling capacity, suitable for spaces up to 1000 sq. ft., with supplemental heating of 10,600/8,600 BTU.
- User-friendly electronic control panel featuring a digital display, three cooling speeds, eco and sleep modes, and a 24-hour programmable timer with 8-way directional air louvers.
- Includes a quick installation kit for windows with a minimum height of 19.5 inches.
- Equipped with a washable filter to keep air clean from dust and contaminants, ensuring optimal performance.
- Remote control for convenient adjustment of settings from a distance.
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- 18,000/17,600 BTU cooling capacity, suitable for spaces up to 1000 sq. ft., with supplemental heating of 10,600/8,600 BTU.
- User-friendly electronic control panel featuring a digital display, three cooling speeds, eco and sleep modes, and a 24-hour programmable timer with 8-way directional air louvers.
- Includes a quick installation kit for windows with a minimum height of 19.5 inches.
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#7
22% Off
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- Compact design (16.5” x 14.06” x 27.09”) suitable for rooms up to 700 sq. ft. with both cooling and heating functions.
- 4-in-1 functionality: Acts as an air conditioner (8400 BTU DOE / 14000 BTU ASHRAE), heater (11,000 BTU), dehumidifier, and fan, with remote control operation.
- Includes a washable filter, auto water evaporation feature, and a programmable 24-hour timer for convenient use.
- Easy to move around with built-in casters and side handles, facilitating room-to-room mobility.
- Comes with a user-friendly installation kit and a large vented airflow outlet for effective cooling.
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- Compact design (16.5” x 14.06” x 27.09”) suitable for rooms up to 700 sq. ft. with both cooling and heating functions.
- 4-in-1 functionality: Acts as an air conditioner (8400 BTU DOE / 14000 BTU ASHRAE), heater (11,000 BTU), dehumidifier, and fan, with remote control operation.
- Includes a washable filter, auto water evaporation feature, and a programmable 24-hour timer for convenient use.
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#8
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- Powerful 8000BTU cooling and 4000BTU heating for year-round comfort in rooms up to 350 square feet.
- Features an LED display, 5 operational modes, 3 fan speeds, a 24-hour timer, and ECO mode for energy efficiency. Includes a washable front-access filter for easy maintenance.
- Connects via WiFi for remote control through an app or voice commands (compatible with Alexa and Google Assistant) for convenient temperature adjustments from anywhere.
- Easy to install with included side panels and a detailed manual, compatible with window widths of 23" - 36" and heights of 14.5".
- Backed by a 1-year warranty with customer support available for questions or assistance.
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- Powerful 8000BTU cooling and 4000BTU heating for year-round comfort in rooms up to 350 square feet.
- Features an LED display, 5 operational modes, 3 fan speeds, a 24-hour timer, and ECO mode for energy efficiency. Includes a washable front-access filter for easy maintenance.
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#9
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- Cools and warms spaces up to 400 square feet, making it suitable for medium-sized rooms; includes a low-noise compressor (52 dB) and a Self-Evaporating System to minimize water tray emptying.
- Multi-functional with cooling (12,000 BTU), heating (12,000 BTU), dehumidifying, and fan capabilities for year-round comfort.
- Features an LED display and remote control for easy operation; includes a programmable 24-hour timer, 3 fan speeds, and an automatic air swing function for efficient airflow and moisture removal (91 pints/day).
- Compact design (17.4 x 13.4 x 32.7 inches) for easy installation in spaces that can't accommodate traditional AC units; washable filters maintain indoor air quality.
- Portable with wheels and handles for effortless movement between rooms; versatile for use in various settings such as dorms, apartments, and offices.
- This unit should not be used near open flames or heat sources.
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- Cools and warms spaces up to 400 square feet, making it suitable for medium-sized rooms; includes a low-noise compressor (52 dB) and a Self-Evaporating System to minimize water tray emptying.
- Multi-functional with cooling (12,000 BTU), heating (12,000 BTU), dehumidifying, and fan capabilities for year-round comfort.
- Features an LED display and remote control for easy operation; includes a programmable 24-hour timer, 3 fan speeds, and an automatic air swing function for efficient airflow and moisture removal (91 pints/day).
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#10
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- 8,000 BTU cooling and 4,000 BTU heating capabilities, suitable for rooms up to 350 square feet.
- User-friendly controls with LED display and remote, allowing for fan speed selection and temperature adjustments between 61°F and 88°F.
- Quick assembly with included mounting parts and a detailed manual, ensuring compatibility with window sizes.
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- 8,000 BTU cooling and 4,000 BTU heating capabilities, suitable for rooms up to 350 square feet.
- User-friendly controls with LED display and remote, allowing for fan speed selection and temperature adjustments between 61°F and 88°F.
- Quick assembly with included mounting parts and a detailed manual, ensuring compatibility with window sizes.
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