The Best 49 Window AC Heaters: Stay Cool and Comfortable

Ac Heater Window Unit combines cooling and heating features in one compact system, perfect for spaces where wall-mounted AC units aren' t an option. Our comparison evaluates top models, comparing their efficiency ratings, noise levels, and additional features to help you find the right balance of performance and comfort for your needs.

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Reviews

HomePointe 18,000 BTU Window Air Conditioner

This versatile window unit efficiently cools rooms up to 1,000 square feet using its 18,000 BTU capacity, while advanced temperature sensors and an ionizer ensure optimal comfort. The compact design fits standard windows, and the intuitive controls make it a practical solution for any space.

Freonic 8,000 BTU Window Air Conditioner

This sleek window air conditioner combines stylish design with practical features like adaptive controls and a follow-me remote, making it a comfortable addition to any room up to 350 square feet. The unit efficiently cools with three adjustable speeds while removing excess moisture to improve air quality. Its energy-efficient operation and automatic louver system ensure quiet, consistent cooling that adapts to your needs.

Keystone KSTHW12A 12,000 BTU Heat and Cool Window Air Conditioner

Keystone's 12,000 BTU window air conditioner packs serious cooling power into a versatile package that handles both heat and humidity. Its 4-way air direction and 3 fan speeds let you fine-tune airflow, while the built-in dehumidifier keeps your space dry and comfortable. The 230V unit efficiently cools rooms up to 550 square feet and includes an easy-to-use remote control for convenient temperature adjustments.

GE 230V Window Air Conditioner

When it comes to cooling down your space, this GE window air conditioner brings the heat - both literally and figuratively. The 11,800 BTU unit keeps things comfortable in rooms up to 550 square feet, and its washable filter makes maintenance a breeze. Whether you're zipping through summer or snuggling up in winter thanks to its reliable heater, this versatile window AC delivers the performance you need for any season.

Global Industrial Window AC with Built-in Heater

This versatile window air conditioner expertly handles both cooling and heating duties for medium-sized rooms. With its quiet 60-decibel operation and efficient 10.7 Combined Energy Efficiency Ratio, it keeps your space comfortable year-round while managing humidity effectively. The washable filter and straightforward electronic controls make maintenance simple, while the included remote with Follow Me technology ensures even coverage throughout the room.

Keystone 8,000 BTU Inverter AC with Heater

The Keystone window air conditioner efficiently cools down rooms with its 8,000 BTU rating while keeping things comfortable with a built-in heater that kicks in between 41-75°F. Thanks to its slim 14.5-inch frame, installation is a breeze in windows that range from 24-38.5 inches wide. A washable filter alerts you when it's time for a cleaning, ensuring your unit runs smoothly all season long.

Perfect Aire 12,000 BTU Window AC

Keep your space comfortable year-round with this powerful window unit that handles both cooling and heating. With reliable performance in various climates and smart features like a programmable timer, it's designed to save you money while making your home more enjoyable.

Kuhl Window AC 28K BTU

The Friedrich Kuhl window air conditioner packs impressive cooling power into a surprisingly quiet package, thanks to its 2000 square foot coverage and 45% quieter operation than competitive models. Its built-in WiFi lets you control the unit from anywhere, while the ability to install MERV 13 filters takes air quality to the next level. At just 13.4 amps on a 230V supply, this powerhouse manages to keep things surprisingly efficient.

8000 BTU Perfect Aire Window AC & Heater

This versatile window unit masters both cooling and heating for medium rooms, with its efficient 8000 BTU chill and 3500 BTU warmth output perfectly balancing energy use. The intelligent auto, sleep, and dry modes, along with three fan speeds, ensure your space stays just right, while the slim 36-inch frame fits snugly into standard windows. Users particularly love how this compact system handles their biggest temperature challenges, though a few noted issues with the heating element's performance.

LG 18,000 BTU Wi-Fi Window AC with Heat

This window AC from LG combines powerful cooling with useful features like voice control and smart scheduling. The 4-way air deflection lets you direct the airflow exactly where you need it, whether you're trying to cool a room down or keep it cozy on cool days. While some users have reported durability issues, many appreciate its versatility, capable of handling both heating and cooling with its 2 fan speeds and programmable timer.

8,000 BTU Connected Window AC

The Frigidaire window-mounted air conditioner pairs advanced cooling capabilities with modern convenience through its smartphone app control. With 8,000 BTUs of cooling power, it efficiently manages room temperatures in medium-sized spaces, while features like programmable timers and adjustable fan speeds help tailor the comfort experience to your preferences. Users particularly appreciate the unit's quiet operation and reliable performance, though some have noted minor issues with the remote control and initial setup process.

LG 12,000 BTU Window Air Conditioner

This LG window AC efficiently cools and heats medium-sized rooms, with its quiet operation making it suitable for overnight use. The sleek white design blends seamlessly into any space, while the 230/208-volt compatibility ensures reliable performance in your home's electrical system. The unit's compact size and lightweight construction make installation straightforward, with the included window kit getting you up and running in no time.

Keystone Window AC with Inverter Technology

You're going to love this quiet, efficient 12,000 BTU window AC that cools down your whole 550-square-foot space in no time. The smart inverter technology adjusts the motor speed for perfect cooling while saving you energy, and you'll appreciate the 1.73 pints per hour dehumidifying power that makes summer air feel more comfortable. When the temperatures drop, switch to the supplemental heat for those chilly evenings – it works best between 41 and 75 degrees outside.

Koldfront WAC25001W Window Air Conditioner

This dual-purpose window unit masterfully balances cooling and heating for your space, pulling off 25,000 BTUs of air conditioning and 16,000 BTUs of supplemental heat. Its thoughtful features like a 24-hour sleep timer and energy-saving mode make it practical for everyday use, while the built-in dehumidifier helps maintain just the right indoor climate. Whether you're dealing with Tennessee heat or need a warm front during chilly winters, this versatile AC/heater gets the job done efficiently.

Keystone 230V Window AC with Heat Capability

Keystone's 230V air conditioner brings serious cooling power to your space with 12,000 Btu, backed by supplemental heat for those chilly evenings. This energy-efficient unit handles up to 550 square feet and features a 24-hour programmable timer to help you save on utility costs. The unit's 4-way air movement and remote-controlled digital display make it easy to adjust the temperature to your liking.

12,000 BTU GE Heat/Cool Window Air Conditioner

This window unit efficiently cools and heats medium rooms through its 12,000 BTU cooling and 10,700 BTU heating capacity, maintaining optimal comfort in spaces up to 550 square feet. The filter reminder system and auto-dimming LED display enhance maintenance convenience, while three cooling and heating settings along with adjustable fan speeds provide customized temperature control. The eco mode automatically conserves energy by turning off the fan and compressor when the room reaches the set temperature.

Ah123g35ax 11600 BTU Window Air Conditioner with Heat Pump

This affordable Amana window unit delivers big cooling power in a small package, efficiently tackling heat in rooms up to 800 square feet. The reliable heat pump system handled 95-degree Georgia summers in the reviewer's 960-square-foot mobile home, keeping electricity costs reasonable without breaking the bank.

12,000 BTU Ultra Quiet Window Air Conditioner with Energy Saver Mode

This ultra-quiet window AC unit quickly cools down 400 square feet while offering multiple operation modes including cool, dry, fan, auto, sleep, and energy saver. The 45 PT/D dehumidifier removes excess moisture, and the three fan speeds provide versatile cooling. The removable washable filter keeps the air clean, and the 24-hour timer lets you set your desired operating times.

LG 7600 BTU Window Air Conditioner

The LG window air conditioner effectively cools medium-sized rooms, offering both heat and cool functions through its combined 7,600 BTU air conditioning and 3,850 BTU heating capabilities. With its digital control panel and remote, managing the two fan speeds and 24-hour timer is simple. The unit's quiet operation and efficient cooling of up to 320 square feet make it a practical addition to any room.

LG 7500 BTU Window Air Conditioner

This all-in-one window unit handles both heating and cooling for spaces up to 320 square feet, with quiet operation and easy remote control. Users appreciate its dehumidifying capabilities and reliable performance in small to medium rooms. The 7500 BTU cooling and 3850 BTU heating provide comfortable temperatures while the auto restart feature ensures you return to your preferred settings after a power outage.

Toshiba 5000BTU Window Air Conditioner

This sleek Toshiba window unit brings a sophisticated look to any room while delivering cool air through its 5,000 BTU capacity. With its quiet operation and intuitive controls, it's earned top ratings from users who appreciate its performance and ease of use. The washable filter and smartphone compatibility showcase the modern features that make this a practical choice for small to medium rooms.

LG 18,000 BTU Heat & Cool Window Air Conditioner

This sleek window air conditioner combines powerful cooling with reliable heating, making it a versatile addition to any room. With LG's advanced ThinQ technology, you can control your climate from anywhere using your smart devices, while the compact design lets you install it almost anywhere. The washable filter and quiet operation make it practical for daily use, helping you maintain a comfortable temperature year-round.

Amana AH123G35AX Window Air Conditioner with Built-in Heat Pump

Whether you're dealing with summer's heat or winter's chill, this dependable window air conditioner takes care of both with its built-in heat pump. The easy-to-use electronic touchpad control and washable filters make it a breeze to operate and maintain, while the solid build quality ensures it'll last through many seasons.

Freonic 12,000 BTU Window Air Conditioner

This 12,000 BTU window air conditioner efficiently cools up to 550 square feet while removing 2.5 pints of moisture per hour. The adaptive controls and LED display make it simple to adjust settings, and the remote follows you around the room to maintain your preferred temperature. Energy Star certification means it saves you money on your electric bill while quietly doing its job.

Amana 230-Volt Through-the-Wall AC Heated Window Unit

This efficient window unit combines powerful cooling with reliable electric heat, making it a practical solution for temperature control in smaller spaces. Users appreciate its quiet operation and straightforward controls, though some note the need for proper installation with a wall sleeve. The washable filters and removable condenser make maintenance simple, while the remote control adds convenience to this otherwise straightforward appliance.

LG 23,000 BTU Smart Window Air Conditioner

The LG LW2423HRSM window air conditioner combines powerful cooling and heating capabilities with smart home convenience through its Wi-Fi connectivity and ThinQ app control. At 23,000 BTUs, it efficiently cools larger rooms while the 12,000 BTU heater keeps you warm during cooler months. The washable air filter and quiet 62dB operation make it practical for daily use, while features like auto restart and 24-hour timer ensure consistent comfort regardless of power outages.

12,000 BTU Window AC with Heat

This window air conditioner packs serious punch with 12,000 BTUs of cooling and 11,000 BTUs of heating, keeping your space comfy year-round. The energy-efficient unit tackles big rooms up to 550 square feet and comes with handy features like an energy saver mode and 24-hour timer. While it does require a special 230V outlet, the digital display and remote control make it a breeze to use.

Koldfront WAC8001W 8,000 BTU Window AC

Enjoy precise temperature control with three fan speeds and four-way air direction. The reliable 8,000 BTU cooling and 3,500 BTU heating capabilities keep your space comfortable year-round. The handy remote lets you adjust settings from across the room.

LG 15,000 BTU Window Air Conditioner

This LG window air conditioner brings big cooling power to any space with its 15,000 BTU punch. The smart Wi-Fi feature lets you rock the temperature from your phone or Alexa, while the three-speed fan keeps you comfy with whisper-quiet options. The washable filter and ENERGY STAR rating mean less maintenance and lower bills, making this more than just another room-filler—it's your new climate superhero.

LG 8,200 BTU Window Air Conditioner HEAT Pump

This LG window air conditioner has earned a solid 4.2 rating from 86 reviewers who praise its cooling efficiency and ease of use. With 340 sq. ft. of coverage and 8,200 BTUs of power, it effectively cools medium-sized rooms while its 24-hour timer and remote control bring modern convenience. The 3 fan speeds and 4-way air direction ensure consistent circulation, though some users note the plastic components can be noisy.

Midea 12000 BTU Window Air Conditioner with Heat and Dehumidifier

This Midea air conditioner combines powerful cooling, efficient heating, and dehumidifying capabilities in one smart window unit that quietly handles up to 550 square feet. With Inverter technology, it adjusts its power consumption precisely to match your cooling needs, delivering consistent comfort while saving energy. The intuitive app control and voice compatibility let you manage your climate setup from anywhere, making this more than just a typical window AC unit.

Cool-living 8,000 BTU Inverter Window Air Conditioner

This Energy Star-certified window air conditioner efficiently cools spaces while maintaining whisper-quiet operation at 42dB. Digital controls and remote functionality simplify temperature management, enhanced by a 24-hour programmable timer. A washable filter and compact design facilitate easy maintenance and quiet performance, making it ideal for residential cooling needs.

Arctic Wind 8,000 BTU Window Air Conditioner with Heat

This handy window AC unit keeps your space comfy with its 7,800 BTU cooling power and 4,000 BTU heating, perfect for managing small to mid-sized rooms. Its sleek digital controls and full air direction let you point the cool or warmth exactly where you need it most. Best of all, when winter rolls around, it automatically switches to heat mode to keep you warm and cozy.

LG 6000 BTU Dual Inverter Window Air Conditioner

This dual inverter window air conditioner combines impressive cooling efficiency with remarkable quiet operation, effortlessly maintaining a comfortable temperature for rooms up to 260 square feet. Users consistently praise its whisper-quiet performance and Energy Star certification, though some note the unit's significant weight requires careful installation. The smart Wi-Fi capabilities add convenience, allowing remote control and monitoring through the companion app.

Koldfront WTC8001W 8,000 BTU Wall-Mounted Air Conditioner with Heater

This versatile air conditioner seamlessly transitions between powerful cooling and reliable heating for year-round comfort. At 8,000 BTUs, it quickly brings rooms down to a cozy 72°F, while its built-in heater provides genuine warmth without the need for separate equipment. With its through-the-wall design, it installed easily in my 180 sq ft room, blocking drafts and keeping the temperature just right.

GE 8,000 BTU Smart Window AC

The GE window air conditioner pairs powerful cooling with modern convenience, letting you adjust the temp from your phone or Alexa. With 8,000 BTUs to handle medium rooms (up to 350 sq. ft. ), you get three different cooling speeds plus intelligent fan modes for precise comfort. The slim design fits easily through standard windows, and the washable filter makes maintenance a breeze.

HomePointe 12,000 BTU Window Air Conditioner

This versatile window air conditioner brings serious cooling power to any room with its 12,000 BTU rating, keeping spaces up to 550 square feet comfortably cool. The smart temperature sensing technology learns your preferred settings for effortless climate control, while the 1-touch remote and LED display give you clear, convenient access to all functions. At just 23 inches wide, it slips into standard windows while its slim profile keeps your room looking clean and uncluttered.

TCL 8,000 BTU Smart Window Air Conditioner

This sleek black window AC brings serious cooling power to your space, thanks to its 8,000 BTU rating. The smart app control is a game-changer, letting you manage your room's temp from anywhere. With whisper-quiet sleep and energy-saving modes, it's designed to keep you comfy while keeping your bills in check.

Dreo 7500 BTU Window Air Conditioner

The Dreo window air conditioner efficiently cools rooms up to 400 square feet with its precise airflow control and energy-efficient design. Its compact size and quick-installation features make it a practical solution for both residential and commercial spaces, while its ultra-quiet operation ensures comfortable cooling all day and night. As an ENERGY STAR certified unit, it delivers significant energy savings without compromising performance.

8000 BTU Smart Window Air Conditioner

This smart window air conditioner packs serious cooling power into a space-saving design that fits most standard windows. The 8000 BTU unit cools rooms up to 350 square feet with four different fan settings, including energy-saving eco-mode and quiet sleep function. Installation is a breeze with the included tools - it mounts in just 15 minutes with no professional help needed. Controls are equally simple thanks to a companion app and voice command compatibility with Alexa and Google Assistant.

10,000 BTU Frigidaire Window AC

This window-mounted air conditioner brings much-needed relief to rooms up to 450 square feet, with its powerful 10,000 BTU rating and efficient 10.4 combined energy efficiency ratio. The multi-speed fan lets you choose between three settings to match your comfort level, while the 4-way air direction control ensures cool air reaches exactly where you need it. At just 61 dBA on low and 58 dBA on medium, it's quieter than you might expect for its power, though it does let you know it's working with that familiar humming sound.

LG 12,200 BTU Window Air Conditioner with Heating

This smart window unit keeps your space comfy year-round with its 12,200 BTU cool breeze and 11,200 BTU warm hug. The whisper-quiet 4-way airflow makes sure every corner feels just right, while the easy-to-use remote lets you fiddle with settings from anywhere in the room. Best of all, when the power goes out, it picks up right where it left off—because nothing interrupts your comfort.

GE Profile 12,000 BTU Window Air Conditioner

This energy-efficient window air conditioner packs a powerful 12,000 BTUs into an impressively quiet package, thanks to its inverter technology that reduces noise to a whisper-low 40 dB. The WiFi-enabled unit lets you control the climate from anywhere, while its smart algorithms maintain your chosen temperature with barely a hum. Whether you're cooling a small office or a spacious living room, this highly-rated GE model keeps things comfortable without the typical window unit racket.

LG 23,000 BTU Window Air Conditioner with Heat

A reliable LG window unit that efficiently cools medium-sized rooms while providing supplemental heat on chilly days. The quiet operation and versatile fan speeds make it comfortable to use, though installation requires careful measurement to fit standard windows. Users particularly appreciate its energy efficiency and automatic restart feature after power outages.

Midea 12,000 BTU Smart Inverter Window Air Conditioner

At 12,000 BTUs, this smart inverter window air conditioner delivers powerful cooling with remarkable efficiency, thanks to its advanced U-shaped design that keeps noise levels incredibly low at just 32 dBA. The clever 4-way airflow system pushes cold air up to 20 feet away, while the compact footprint and straightforward three-step installation make it a practical choice for any room. Whether you're escaping the heat in the Deep South or keeping your electric costs down in a large space, this Midea unit proves itself as a reliable, energy-efficient solution for your cooling needs.

Midea 8,000 BTU U-Shaped Smart Inverter Window Air Conditioner

The Midea U-shaped window air conditioner stands out for its quiet operation and efficient cooling, thanks to its unique design that keeps noisy components outside. With powerful airflow reaching up to 20 feet, it quickly cools rooms while remaining surprisingly silent – perfect for a goodnight's sleep. The smart inverter technology and app control add modern convenience, making it a practical choice for residential use.

LG LW8016ER 8,000 BTU Window Air Conditioner

This window-mounted air conditioner efficiently cools living spaces up to 340 square feet, with three fan speeds and energy-saving features. Its slim frame fits easily into standard windows, and the reliable LG construction has earned high praise from users who appreciate its quiet operation and effective cooling. The unit's full-featured remote control and 24-hour timer make it extremely practical for everyday use.

Amana 9,000 BTU Window Air Conditioner

Amana's room air conditioner efficiently handles both heating and cooling for medium-sized rooms, with a reliable heat pump system and washable filters that make maintenance straightforward. The electronic touchpad control and remote functionality simplify operation, while the compact design lets you install it in double-hung windows or through-the-wall applications. Users appreciate its performance and value, though some may find it less quiet in cooling mode or too powerful for very small spaces.

Refurbished Frigidaire 15,000 BTU Window AC

This energy-efficient window unit packs a powerful punch at 15,000 BTUs, effortlessly cooling your space while its smart Wi-Fi features let you adjust the temperature from anywhere. The washable filter and sleek design keep maintenance simple, so you can enjoy consistent comfort all season long.

Buyer's Guide

A window air conditioner with heating (AC Window Heater) combines cooling and heating functions in one unit, making it a versatile solution for climate control in residential spaces. These units are particularly useful in regions with mild winters where a full HVAC system might be unnecessary or cost-prohibitive.

Size and Installation Requirements

Windows must be a specific size to accommodate the unit properly. Standard measurements range from 16 to 24 inches (W x H) for most models. Check your window's depth as well, as units typically require at least 3 inches of clearance on all sides. Proper installation ensures both effective operation and energy efficiency.

BTU Rating and Room Size

Heating and cooling capacity is measured in British Thermal Units (BTUs). A general rule of thumb is 20 BTUs per square foot for heating, but this can vary based on insulation quality and local climate. Underestimating the BTU rating can result in poor performance and wasted energy.

Energy Efficiency and Operating Costs

Look for models with high Seasonal Energy Efficiency Ratio (SEER) ratings for cooling and heating. ENERGY STAR-certified units meet government efficiency standards and can reduce operating costs. Consider the unit's energy consumption when comparing prices to ensure long-term savings.

Additional Features and Maintenance

Features like remote control, programmable thermostats, and quiet operation can enhance user comfort. Filter maintenance is crucial for both performance and air quality - expect to replace filters every 1-3 months, depending on usage. Check for warranties covering both parts and labor for peace of mind.

FAQ

What is the difference between a window AC unit and a window AC heater?

A window AC unit primarily cools your room, while a window AC heater uses the same core components to remove warm air and cool the room. Some models have reversible functions to serve both purposes.

Heater window units are designed for colder climates where both heating and cooling are needed. They use resistive heating elements to warm the air before it's circulated into your room.

What size window do I need for a window AC/heater unit?

Units come with specific window frame width requirements. Measure your window frame width in inches and check the unit's specifications to ensure a proper fit.

The unit's height should match your window's height or accommodate any installation kits provided. Depth requirements ensure proper air circulation at the back of the unit.

How much electricity does a window AC/heater use?

The electricity consumption varies by model and cooling/heating capacity. Most standard units consume between 500-1,500 watts, with heating models using significantly more power.

Heating typically uses 1,500-3,000 watts, depending on capacity. Operating costs can vary based on usage frequency and local electricity rates.

What maintenance do window AC/heater units need?

Regular cleaning of filters and coils is essential for optimal performance and energy efficiency. Check and clean the exterior filters monthly, and remove interior dust annually.

Professional servicing should occur every two years, especially if the unit experiences reduced performance. Lubricate moving parts and check for electrical component wear.

How long do window AC/heater units last?

Most window AC/heater units last 8-10 years with regular use and maintenance. Factors include usage frequency, cleaning habits, and exposure to environmental elements.

Expect parts to degrade over time, particularly the compressor and electrical components. Monitor performance closely in the last 2-3 years of use for signs of aging.

What installation requirements should I consider?

You'll need a compatible window frame, proper drainage for water removal systems, and electrical access within 16 feet of the unit. Ensure structural stability and proper ventilation.

Check for weather-sealing compatibility and consider the unit's weight limit. Some windows may require support modifications to safely accommodate the unit.