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Finding the best window air conditioners with heater requires matching capacity to your room size and power source. We compared 15 models using only the specifications published on the listings. The Midea 8,000 BTU Inverter Window Air Conditioner with Heat leads because its 56-pound inverter design offers quiet cooling and smart control in small rooms. This guide helps you decide which unit fits your space, voltage requirements, and heating needs.
Match Voltage and BTU to Your Outlet
Check your outlet voltage first. Units like the Midea 8,000 BTU model run on standard 115V power, while the Keystone 23,200 BTU unit requires 230V. Higher BTU ratings handle larger spaces, but you must ensure your electrical system supports the specific voltage. Selecting the wrong voltage prevents installation entirely.
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | Midea 8,000 BTU Inverter Window Air Conditioner with Heat Best overall | quiet cooling and smart control in small rooms | |
| 2 | ROVSUN 8,000 BTU Window AC with Heat Best budget | small rooms needing basic heating | |
| 3 | OLMO 12,000 BTU 230V Through-the-Wall Also great | 230V through-the-wall heating and cooling | |
| 4 | ROVSUN 12,000 BTU Window Air Conditioner with Heat Best 208-230v | 208-230V window installations up to 550 sq ft | |
| 5 | Keystone 23,200 BTU Window Air Conditioner with Heat Best premium | large rooms needing strong cooling and mild heat | |
| 6 | LG 18,000 BTU Window Air Conditioner with Heat Best bedrooms | large bedrooms with 230V outlets | |
| 7 | OLMO 8000 BTU Through-the-Wall AC Also great | small rooms with existing 115V outlets | |
| 8 | TCL 14,000 BTU Wall-Mounted AC Best wall-mounted | 230V wall installations up to 700 sq ft | |
| 9 | Amana 15,000 BTU PTAC Heat Pump Also great | 230V apartments needing electric heat | |
| 10 | ROVSUN 8000 BTU Through-Wall AC with Heat Best smart app | small rooms needing smart wall-mounted control | |
| 11 | LG 18,000 BTU Window AC with Heat Also great | large rooms needing 230V power and smart control | |
| 12 | Whirlpool 12,000 BTU Wall AC Also great | medium rooms needing 230V supplemental heat | |
| 13 | Frigidaire 14,000 BTU Wall AC with Heater Also great | medium rooms needing supplemental wall heat | |
| 14 | Frigidaire 8,000 BTU Window AC with Supplemental Heat Best 8,000 btu | small bedrooms needing quiet cooling and mild heat | |
| 15 | ROVSUN 12000 BTU Through-Wall AC Best sleep mode | Quiet sleep mode in 550 sq ft rooms |
The best fit for you
- You need smart control for a small room – Midea 8,000 BTU Inverter Window Air Conditioner with Heat – This 8,000 BTU inverter unit covers 350 square feet and includes remote control.
- You want the most compact model on the list – Keystone 23,200 BTU Window Air Conditioner with Heat – The Keystone model measures 10 inches in width, height, and length for tight spaces.
- You have a 230V outlet for a large room – LG 18,000 BTU Window Air Conditioner with Heat – The LG 18,000 BTU unit handles spaces up to 1,000 square feet with 230V power.
- You need quiet operation for a small bedroom – Frigidaire 8,000 BTU Window AC with Supplemental Heat – The Frigidaire 8,000 BTU window model features quiet operation for rooms up to 350 square feet.
Midea 8,000 BTU Inverter Window Air Conditioner with Heat
Best for: quiet cooling and smart control in small rooms
- Operating Mode
- Heater
- Cooling Capacity
- 8,000 BTU
- Coverage Area
- 350 sq ft
- Noise Level
- 45 dBA
- Control Method
- App, Remote, Voice
- Operating Modes
- Heat, Auto, Cool, Dry, Fan, Eco
The Midea 8,000 BTU Smart Inverter Air Conditioner is designed for rooms up to 350 square feet. It offers cooling, dehumidification, and supplemental heating when outside temperatures are above 41°F. This unit features inverter technology for energy efficiency and operates at a quiet 45 dBA. You can control it via remote, app, or voice assistants. It fits windows with openings between 24 and 38.5 inches wide.
- Inverter technology saves up to 35% energy compared to standard models
- Quiet operation at 45 dBA for bedroom use
- Smart control via app, Alexa, and Google Assistant
- Covers areas up to 350 square feet
- 8,000 BTU capacity is lower than many competitors on this list
- Heating function only works when outside temperature is above 41°F
- Weighs 56 pounds, which is heavier than lighter 8,000 BTU units
- You need a quiet unit for a bedroom or office
- You want smart home integration with voice control
- You have a window opening between 24 and 38.5 inches
- You need supplemental heat in freezing temperatures below 41°F
- You require cooling for a room larger than 350 square feet
- You prefer a through-the-wall installation over window mounting
Verdict: Midea 8,000 BTU Smart Inverter Window AC is a quiet, efficient choice for small rooms where smart features matter. It suits users who prioritize energy savings and app control over high-capacity heating.
ROVSUN 8,000 BTU Window AC with Heat
Best for: small rooms needing basic heating
- Operating Mode
- Heater
- Cooling Capacity
- 8,000 BTU
- Coverage Area
- 350 sq ft
- Control Method
- App, voice, panel, remote control
- Voltage
- 115V
- Operating Modes
- Heat, Auto, Cool, Dry, Fan, ECO
This ROVSUN unit delivers 8,000 BTU cooling and 4,000 BTU heating for spaces up to 350 square feet. It operates on standard 115V power and fits windows between 26 and 36 inches wide. You get five operating modes, including heat, along with Wi-Fi control and voice assistant compatibility. The compact 19.8-inch width and 24-inch length make it a practical fit for smaller rooms or apartments where a larger unit would not fit.
- 8,000 BTU cooling capacity
- 4,000 BTU supplemental heating
- Wi-Fi and voice control support
- Fits windows 26 to 36 inches wide
- Lower 4,000 BTU heating output compared to competitors
- Smaller 350 square foot coverage area
- Standard 115V electrical requirement
- You need a heater for a small room under 350 square feet
- You have a window opening between 26 and 36 inches wide
- You want smart app control for climate adjustments
- You require heating for a room larger than 350 square feet
- You need a 230V unit for higher power output
- You want a through-the-wall installation model
Verdict: ROVSUN 8,000 BTU Window AC with Heater fits small rooms up to 350 square feet that need basic heating and smart controls. It suits renters with standard 115V outlets and narrow window frames who prioritize compact size over high heating power.
OLMO 12,000 BTU 230V Through-the-Wall
Best for: 230V through-the-wall heating and cooling
- Operating Mode
- Heater
- Cooling Capacity
- 12,000/11,700 BTU/h
- Control Method
- Push button, remote, smartphone
- Voltage
- 208/230V
- Operating Modes
- Cooling, heating
- Features
- ECO Mode, Remote
This OLMO unit offers 12,000 BTU of cooling and 10,600 BTU of heating for through-the-wall installation. It runs on 230V power and uses R-32 refrigerant. You can control it via a digital panel, remote, or smartphone app. The white unit measures 24.2 by 14.5 inches and weighs 85.8 pounds. It suits homes or commercial spaces needing dedicated wall mounting for both cooling and heating needs.
- 12,000 BTU cooling capacity
- 10,600 BTU heating capacity
- Smart control via app or remote
- R-32 eco-friendly refrigerant
- Requires 230V power supply
- Wall sleeve sold separately
- Heavier at 85.8 pounds
- You need a 230V through-the-wall unit
- You want smart app control
- You have a pre-installed wall sleeve
- You only have 115V outlets
- You want a window-mounted unit
- You need the wall sleeve included
Verdict: OLMO 12,000 BTU 230V Through-the-Wall is ideal for users with 230V power who need a smart, through-the-wall solution for moderate-sized rooms.
ROVSUN 12,000 BTU Window Air Conditioner with Heat
Best for: 208-230V window installations up to 550 sq ft
- Operating Mode
- Heater
- Cooling Capacity
- 12,000 BTU
- Coverage Area
- 550 sq ft
- Noise Level
- 59 dB
- Control Method
- Digital display, remote control
- Voltage
- 208/230V
This ROVSUN unit delivers 12,000 BTU of cooling and heating for spaces up to 550 square feet. It operates on 208-230V power, making it suitable for specific electrical setups. The 59 dB noise level supports quiet use in bedrooms or offices. You control the LED display, fan speeds, and 24-hour timer via the included remote. The white finish fits standard window frames.
- 12,000 BTU cooling capacity for rooms up to 550 sq ft
- 208-230V voltage compatibility for dedicated circuits
- 59 dB operation for quiet performance
- Includes remote control for easy adjustment
- 24-hour timer for scheduled operation
- Heavier at 82.6 pounds compared to lighter 8,000 BTU models
- Larger footprint with a 24-inch length requires wider window space
- 208-230V voltage limits use to specific electrical outlets
- You need a 208-230V unit for a dedicated circuit
- You want to cool a room up to 550 square feet
- You prefer quiet operation at 59 dB
- You only have standard 115V outlets
- You need to cool a room larger than 550 square feet
- You require a lighter unit under 70 pounds
Verdict: ROVSUN 12,000 BTU 208-230V Window AC fits users with 208-230V power who need quiet cooling for medium-sized rooms. It offers solid performance for offices or apartments where standard 115V units are insufficient.
Keystone 23,200 BTU Window Air Conditioner with Heat
Best for: large rooms needing strong cooling and mild heat
- Operating Mode
- Heater
- Cooling Capacity
- 23,200 BTU
- Coverage Area
- Up to 1,500 sq. ft.
- Control Method
- Smart remote control
- Voltage
- 230V
- Operating Modes
- Cooling, heat, dehumidify, fan, sleep
This Keystone unit delivers 23,200 BTU of cooling and 16,000 BTU of supplemental heat for spaces up to 1,500 square feet. It operates on 230V power and includes a smart remote that measures room temperature to adjust settings. The design fits windows with a minimum height of 19.5 inches. You get cooling, dehumidification, and fan modes alongside the heating function. It is built for large rooms where high capacity is necessary.
- 23,200 BTU cooling capacity for large areas
- 16,000 BTU supplemental heating mode
- Smart remote with temperature sensor
- Covers up to 1,500 square feet
- Heating is supplemental, not a primary source
- Heating mode only works between 23 and 76 degrees outside
- Heavy at 121 pounds
- You need to cool a large room up to 1,500 square feet
- You have a 230V electrical outlet available
- You want supplemental heat for mild weather
- You require a primary heat source for cold winters
- You only have 115V outlets
- Your window height is less than 19.5 inches
Verdict: Keystone 23,200 BTU Window AC is a high-capacity cooling unit with mild heating support. It fits large rooms where you need strong cooling and only occasional warmth.
LG 18,000 BTU Window Air Conditioner with Heat
Best for: large bedrooms with 230V outlets
- Operating Mode
- Heater
- Cooling Capacity
- 18,000 BTU
- Coverage Area
- up to 1,000 sq ft
- Control Method
- Remote, digital control panel
- Voltage
- 230/208V
- Operating Modes
- Cooling, heating, fan
This LG unit delivers 18,000 BTU of cooling and supplemental heating for spaces up to 1,000 square feet. It operates on 230/208V power and includes a remote control for easy adjustments. The 4-way air deflection allows you to direct airflow precisely where you need it. With auto restart and a 24-hour timer, you can maintain comfortable temperatures in bedrooms or living rooms without constant manual intervention.
- 18,000 BTU cooling capacity covers up to 1,000 square feet
- 230/208V voltage supports supplemental heating for cooler days
- Remote control and digital panel allow easy operation
- 4-way air deflection lets you customize airflow direction
- Auto restart restores settings automatically after power outages
- Requires a special 230/208V LCDI plug which may need an outlet adapter
- Weighs 126 pounds, making installation and removal more difficult
- Limited to two fan speeds for cooling and heating adjustments
- You need a powerful unit for a large bedroom or living room
- You have a 230V outlet available for the required plug
- You want precise airflow control with 4-way deflection
- You only have standard 115V outlets and cannot install 230V wiring
- You prefer a lighter unit that is easier to handle alone
- You need more than two fan speed options for quiet operation
Verdict: LG 18,000 BTU Window AC with Heat suits large rooms where you have the correct 230V power supply. It offers strong cooling and heating performance for spaces up to 1,000 square feet.
OLMO 8000 BTU Through-the-Wall AC
Best for: small rooms with existing 115V outlets
- Operating Mode
- Heater
- Cooling Capacity
- 8,000 BTU/h
- Control Method
- Push button, remote, smartphone
- Voltage
- 115V
- Features
- ECO Mode, Remote
- Color
- White
This OLMO unit provides 8,000 BTU of cooling and 4,200 BTU of heating for spaces up to roughly 350 square feet. It runs on standard 115V power and includes a wall sleeve for installation. You can control the temperature via the LED panel, remote, or a smartphone app. The white finish fits most interiors, and the 80-pound build suggests a sturdy design for residential or commercial use.
- Includes wall sleeve for easier installation
- Smart control via smartphone or remote
- Runs on standard 115V household power
- Uses efficient R-32 refrigerant
- Lower heating capacity at 4,200 BTU compared to larger units on this list
- Heavier at 80 pounds, making installation more difficult
- Smaller cooling capacity limits use to smaller rooms
- You need a heater for a small room under 350 square feet
- You have a standard 115V outlet available
- You want a unit that includes the wall sleeve
- You require heating for a large open space
- You only have 230V outlets installed
- You prefer a lighter unit for DIY installation
Verdict: OLMO 8,000 BTU Through-the-Wall Heater fits small rooms where you need reliable heat and cooling without complex wiring. It is a solid choice for renters or homeowners who already have the correct 115V outlet and wall sleeve setup.
TCL 14,000 BTU Wall-Mounted AC
Best for: 230V wall installations up to 700 sq ft
- Operating Mode
- Heater
- Cooling Capacity
- 14,000 BTU
- Coverage Area
- Up to 700 sq ft
- Control Method
- Remote, voice
- Voltage
- 230V
- Color
- White
The TCL 14,000 BTU wall-mounted air conditioner includes a 13,600 BTU heater for year-round comfort. It covers rooms up to 700 square feet and operates on 230V power. You can control it via remote, Wi-Fi app, or voice commands with Alexa. The unit also features a built-in dehumidifier. It fits standard 26x20x15.57 inch sleeves. This model is designed for through-the-wall installation rather than window mounting.
- 14,000 BTU cooling capacity
- 13,600 BTU heating output
- Covers up to 700 sq ft
- Voice control with Alexa
- Built-in dehumidifier mode
- Requires 230V power outlet
- Weighs 75.9 pounds
- Wall sleeve not included
- You need a wall-mounted unit for a room up to 700 square feet
- You have a 230V electrical outlet available
- You want voice control via Alexa
- You only have standard 115V window outlets
- You are installing in a window rather than a wall sleeve
- You prefer a lighter unit under 50 pounds
Verdict: TCL 14,000 BTU Wall AC with Heater suits homeowners with 230V wall outlets who need strong heating and cooling for spaces up to 700 square feet.
Amana 15,000 BTU PTAC Heat Pump
Best for: 230V apartments needing electric heat
- Operating Mode
- Heater
- Cooling Capacity
- 14,500/14,700 BTU
- Voltage
- 208-230V
- Operating Modes
- Fan-only
- Fan Speeds
- 3
- Room Type
- Apartment
This Amana PTAC unit provides 14,500 BTU cooling and 13,200 BTU heat pump output, plus 3.5 kW of electric resistance heat. It uses R32 refrigerant for 11.4 EER efficiency. The unit features a 20-amp power cord and fits standard 42-inch sleeves. You get three fan speeds and a washable front filter. It suits apartment residents needing reliable wall-mounted heating and cooling.
- 13,200 BTU heat pump output
- 3.5 kW electric backup heat
- 11.4 EER efficiency rating
- R32 eco-friendly refrigerant
- Washable front-access filters
- Heavier build at 30 pounds
- Requires 20-amp power connection
- Sleeve and rear grille sold separately
- You need a 230V wall-mounted unit
- You want electric backup heat
- You have a standard 42-inch sleeve
- You only have 115V outlets
- You prefer a window-mounted style
- You need the sleeve included
Verdict: Amana 15,000 BTU PTAC Heat Pump is a solid choice for apartments requiring 230V power and electric backup heat. It fits standard sleeves and offers efficient R32 cooling.
ROVSUN 8000 BTU Through-Wall AC with Heat
Best for: small rooms needing smart wall-mounted control
- Operating Mode
- Heater
- Cooling Capacity
- 8,000 BTU
- Coverage Area
- 350 sq ft
- Control Method
- App, voice, remote
- Voltage
- 115V
- Operating Modes
- Heat, Auto, Cool, Dry, Fan, Eco
This ROVSUN unit combines 8,000 BTU cooling with 4,200 BTU heating for rooms up to 350 square feet. It installs into a standard 25.5-inch sleeve and connects to Wi-Fi for app control. You get five operating modes and three fan speeds. The 115V system includes a remote and voice control compatibility. It is a compact, smart-enabled option for smaller spaces needing all-season climate management.
- 8,000 BTU cooling and 4,200 BTU heating capacity
- Wi-Fi enabled with smartphone app and voice control
- Fits standard 25.5-inch wall sleeve
- Five operating modes including heat, cool, and fan
- Includes remote control and washable front-access filter
- 8,000 BTU capacity is lower than many competitors on this list
- 115V voltage limits power compared to 230V models
- 62.8-pound weight requires handling during installation
- You need smart app control for a small room
- You have a standard 25.5-inch wall sleeve ready
- You want a 115V unit for easier electrical setup
- You require cooling power above 12,000 BTU
- You need a 230V high-power system
- You want a unit that includes the wall sleeve
Verdict: ROVSUN 8000 BTU Smart Wall AC fits users who prioritize smart connectivity and compact sizing for smaller rooms under 350 square feet. It suits those with existing 115V outlets and standard wall sleeves who do not need high-capacity heating or cooling.
LG 18,000 BTU Window AC with Heat
Best for: large rooms needing 230V power and smart control
- Operating Mode
- Heater
- Cooling Capacity
- 18,000 BTU
- Coverage Area
- 1,000 sq ft
- Control Method
- App, Remote, Voice, Electronic
- Voltage
- 230V
- Fan Speeds
- 2
This LG window unit provides 18,000 BTU of cooling and heating for rooms up to 1,000 square feet. It operates on 230V power and includes Wi-Fi connectivity for app and voice control. The unit weighs 132 pounds and measures 30.5 inches wide. You get two fan speeds for cooling, heating, and fan modes, plus a 24-hour timer. This model suits those needing strong output for medium to large spaces.
- 18,000 BTU cooling capacity for rooms up to 1,000 sq ft
- 230V electrical requirement for high performance
- Wi-Fi and voice control via Alexa and Google
- Includes remote control and 24-hour programmable timer
- Auto restart function restores settings after power failure
- Heavier at 132 pounds compared to lighter 8,000 BTU models
- Limited to two fan speeds for cooling, heating, and fan modes
- Requires 230V outlet, which is less common than 115V
- You need to cool a room up to 1,000 square feet
- You have a 230V outlet available for installation
- You want voice control integration with Alexa or Google
- You only have standard 115V outlets
- You are cooling a small room under 500 square feet
- You prefer a lighter unit under 100 pounds
Verdict: LG 18,000 BTU Window AC with Heat delivers high output for larger rooms with smart features. It fits users with 230V power who need strong heating and cooling for spaces up to 1,000 square feet.
Whirlpool 12,000 BTU Wall AC
Best for: medium rooms needing 230V supplemental heat
- Operating Mode
- Heater
- Cooling Capacity
- 12,000/11,600 BTU
- Coverage Area
- up to 550 sq ft
- Control Method
- Remote
- Voltage
- 230V
- Fan Speeds
- 3
The Whirlpool 12,000 BTU wall air conditioner cools spaces up to 550 square feet using 230V power. It includes 10,600 BTU of supplemental heat for mild weather. You get 8-way directional louvers, three fan speeds, and a programmable 24-hour timer. The unit weighs 72.3 pounds and fits sleeves 24.5 to 27 inches wide. It operates via remote control and includes a quick-access filter for maintenance.
- 12,000 BTU cooling capacity for rooms up to 550 sq. ft.
- 10,600 BTU supplemental heat output for mild cold
- 8-way directional louvers for precise airflow control
- Programmable 24-hour timer for scheduled operation
- Quick-access filter for easy cleaning
- Supplemental heat is not designed for primary heating in cold months
- Heavier build at 72.3 pounds compared to lighter window units
- Lower cooling capacity than the 14,000 and 18,000 BTU options on this list
- You need a 230V unit for a through-the-wall installation
- You want directional airflow with 8-way louvers
- You require a programmable timer for scheduled cooling
- You need primary heating for very cold climates
- You only have a standard 115V outlet
- You prefer a lighter, more portable window unit
Verdict: Whirlpool 12,000 BTU Wall AC with Heat suits homeowners with 230V outlets who need reliable supplemental warmth. It delivers strong cooling for medium rooms without the bulk of larger systems.
Frigidaire 14,000 BTU Wall AC with Heater
Best for: medium rooms needing supplemental wall heat
- Operating Mode
- Heater
- Cooling Capacity
- 14,000 BTU
- Coverage Area
- 700 sq ft
- Control Method
- Remote control
- Voltage
- 230V
- Fan Speeds
- 3
This Frigidaire wall unit offers 14,000 BTU cooling and 10,600 BTU supplemental heating for spaces up to 700 square feet. It runs on 230V power and includes a fan mode with three speed settings. You can control the temperature using the included remote, set a 24-hour timer, or use sleep mode for efficient overnight operation. The white unit weighs 78 pounds and measures 24 inches long.
- 10,600 BTU supplemental heater for winter warmth
- Covers up to 700 square feet of space
- Includes remote control for easy adjustment
- Programmable 24-hour timer and sleep mode
- Heavier build at 78 pounds compared to lighter competitors
- Lower heating capacity of 10,600 BTU than full heat pump models
- You need supplemental heat in a room up to 700 square feet
- You prefer remote control operation over manual buttons
- You want a 230V unit for efficient cooling and heating
- You require a higher heating output than 10,600 BTU
- You need a portable unit for easy relocation
- You are installing in a space smaller than 350 square feet
Verdict: Frigidaire 14,000 BTU Wall AC with Heater fits homeowners who need reliable supplemental heat for medium-sized rooms. It suits those who value remote convenience and timer settings over maximum heating power.
Frigidaire 8,000 BTU Window AC with Supplemental Heat
Best for: small bedrooms needing quiet cooling and mild heat
- Operating Mode
- Heater
- Cooling Capacity
- 8,000 BTU
- Coverage Area
- Up to 350 sq. ft.
- Noise Level
- 53 dBA
- Control Method
- Remote control
- Operating Modes
- Supplemental heat, Eco, Sleep, Dry
This Frigidaire unit offers 8,000 BTU cooling and supplemental heating for spaces up to 350 square feet. It operates at 53 dBA, keeping noise low for bedrooms. You get a remote control, six-way directional airflow, and three fan speeds. The 24-hour timer and auto restart add convenience. Its compact 19 by 14.5 by 22 inch frame fits standard windows. This model suits small rooms needing quiet, reliable temperature control.
- Cools and heats up to 350 square feet
- Quiet operation at 53 dBA
- Includes remote control for easy adjustments
- Six-way directional airflow for better distribution
- 24-hour timer and auto restart feature
- Lower cooling capacity of 8,000 BTU limits coverage to smaller rooms
- Heavier build at 61 pounds makes installation more difficult
- Supplemental heat function only, not a full heat pump
- You need quiet cooling for a bedroom under 350 square feet
- You want supplemental heat for mild winter days
- You prefer manual controls with a remote
- You require cooling for large living areas over 500 square feet
- You need a full heat pump for primary heating
- You prefer lightweight units under 50 pounds
Verdict: Frigidaire 8,000 BTU Window AC with Heat fits small rooms where quiet operation matters. You should choose this if you need reliable cooling and mild heating for spaces up to 350 square feet.
ROVSUN 12000 BTU Through-Wall AC
Best for: Quiet sleep mode in 550 sq ft rooms
- Operating Mode
- Heater
- Cooling Capacity
- 12000 BTU
- Coverage Area
- Up to 550 sq ft
- Control Method
- LED control panel, remote control
- Voltage
- 230V
- Operating Modes
- Cool, Heat, Fan, Dry, Sleep
This ROVSUN unit cools and heats spaces up to 550 square feet using 230V power. It includes a 24-hour timer, three fan speeds, and a sleep mode for quiet operation. You control it via a remote or the front LED panel. The removable filter is easy to clean. It fits standard 25.5-inch wall sleeves for quick installation.
- Provides cooling and heating for areas up to 550 square feet
- Includes a 24-hour timer and three adjustable fan speeds
- Features a dedicated sleep mode for quiet nighttime operation
- Operates on 230V power for efficient climate control
- Remote control allows operation from across the room
- Heavier at 72 pounds compared to many lighter window units
- Requires 230V electrical connection instead of standard 115V outlets
- Limited to 550 square feet coverage area
- You need a through-the-wall unit for a 550 square foot space
- You have a 230V electrical outlet available for installation
- You want a dedicated sleep mode for quiet nighttime cooling or heating
- You only have standard 115V outlets and cannot install 230V wiring
- You need a window-mounted unit rather than a through-the-wall sleeve fit
- You require coverage for a room larger than 550 square feet
Verdict: ROVSUN 12000 BTU Through-Wall AC & Heater fits users with 230V power who need quiet sleep mode operation in spaces up to 550 square feet.
Specifications side by side
| Spec | Midea 8,000 BTU Inverter Window Air Conditioner with Heat | ROVSUN 8,000 BTU Window AC with Heat | OLMO 12,000 BTU 230V Through-the-Wall | ROVSUN 12,000 BTU Window Air Conditioner with Heat | Keystone 23,200 BTU Window Air Conditioner with Heat | LG 18,000 BTU Window Air Conditioner with Heat | OLMO 8000 BTU Through-the-Wall AC | TCL 14,000 BTU Wall-Mounted AC | Amana 15,000 BTU PTAC Heat Pump | ROVSUN 8000 BTU Through-Wall AC with Heat | LG 18,000 BTU Window AC with Heat | Whirlpool 12,000 BTU Wall AC | Frigidaire 14,000 BTU Wall AC with Heater | Frigidaire 8,000 BTU Window AC with Supplemental Heat | ROVSUN 12000 BTU Through-Wall AC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cooling Capacity | 8,000 BTU | 8,000 BTU | 12,000/11,700 BTU/h | 12,000 BTU | 23,200 BTU | 18,000 BTU | 8,000 BTU/h | 14,000 BTU | 14,500/14,700 BTU | 8,000 BTU | 18,000 BTU | 12,000/11,600 BTU | 14,000 BTU | 8,000 BTU | 12000 BTU |
| Coverage Area | 350 sq ft | 350 sq ft | – | 550 sq ft | Up to 1,500 sq. ft. | up to 1,000 sq ft | – | Up to 700 sq ft | – | 350 sq ft | 1,000 sq ft | up to 550 sq ft | 700 sq ft | Up to 350 sq. ft. | Up to 550 sq ft |
| Noise Level | 45 dBA | – | – | 59 dB | – | – | – | – | – | – | – | – | – | 53 dBA | – |
| Control Method | App, Remote, Voice | App, voice, panel, remote control | Push button, remote, smartphone | Digital display, remote control | Smart remote control | Remote, digital control panel | Push button, remote, smartphone | Remote, voice | – | App, voice, remote | App, Remote, Voice, Electronic | Remote | Remote control | Remote control | LED control panel, remote control |
| Voltage | – | 115V | 208/230V | 208/230V | 230V | 230/208V | 115V | 230V | 208-230V | 115V | 230V | 230V | 230V | – | 230V |
| Operating Modes | Heat, Auto, Cool, Dry, Fan, Eco | Heat, Auto, Cool, Dry, Fan, ECO | Cooling, heating | ECO, auto, fan | Cooling, heat, dehumidify, fan, sleep | Cooling, heating, fan | – | – | Fan-only | Heat, Auto, Cool, Dry, Fan, Eco | – | – | – | Supplemental heat, Eco, Sleep, Dry | Cool, Heat, Fan, Dry, Sleep |
| Fan Speeds | 3 | 3 | – | – | – | 2 | – | – | 3 | 3 | 2 | 3 | 3 | 3 | 3 |
| Room | – | – | – | – | Large Rooms, Large Room | Bedrooms | – | – | – | – | – | – | – | – | – |
| Features | Inverter, Remote, Quiet Operation | Timer, ECO Mode, Smart App | ECO Mode, Remote | Timer, Remote | Remote | Timer, 24-Hour Timer, Remote | ECO Mode, Remote | Remote | – | Timer, Remote, Smart App | Remote | Remote | Quiet Operation | ECO Mode, Remote, Quiet Operation | Timer, 24-Hour Timer, Remote, Quiet Operation |
| Room Type | – | – | – | – | – | Bedroom, Living Room, Apartment, Basement | – | – | Apartment | – | – | Living Room, Apartment | – | – | – |
| Color | White | White | White | White | Bright White | Bright White | White | White | White | White | Bright White | Bright White | White | White | White |
| Size | 8,000 BTU with Heat | 8000BTU-115V | 12000 BTU 230V, Heat & Cool | – | 23,200 BTU | 18,000 BTU | 8000 BTU 115V, Heat & Cool | 14000 BTU | 15,000 BTU | – | 18,000 BTU | 12000 BTU | – | 8,000 BTU | – |
| Operating Mode | Heater | Heater | Heater | Heater | Heater | Heater | Heater | Heater | Heater | Heater | Heater | Heater | Heater | Heater | Heater |
| Smart Compatibility | – | Alexa | – | – | – | – | – | Alexa | – | Alexa | Alexa | – | – | – | – |
| Mounting Type | – | – | – | – | – | – | – | Wall-Mounted | – | – | – | – | – | – | – |
| Dimensions | 22.2 × 19.4 × 13.9 inches | 24 × 19.8 × 15.2 inches | 20.3 × 24.2 × 14.5 inches | 24 × 19.8 × 15.2 inches | 10 × 10 × 10 inches | 30.5 × 25.5 × 16.8 inches | 20.3 × 24.2 × 14.5 inches | 20.3 × 24.2 × 14.5 inches | 45 × 40 × 100 inches | 20.3 × 24.2 × 14.5 inches | 30.5 × 25.5 × 16.8 inches | 20.3 × 24.2 × 14.5 inches | 24 × 21.5 × 14.5 inches | 22 × 19 × 14.5 inches | 20.3 × 24.2 × 14.5 inches |
| Weight | 56 pounds | – | 85.8 pounds | 82.6 pounds | 121 pounds | 126 pounds | 80 pounds | 75.9 pounds | 30 pounds | 62.8 pounds | 132 pounds | 72.3 pounds | 78 pounds | 61 pounds | 72 pounds |
| Model | MAW08HV1CWT | Window AC & Heater-8K | OW-P12HS230WF | RS- Window AC Heat-12K | KSTHW25B | LW1823HR | OW-P08HS115WF | H14T9XH | DHP153J35BA | Wall AC with Heat-8K | LW1823HRSM | WHAT122-HAW | FHTE143WA2 | FHWH084WB1 | Wall AC-G46001012 |
You can review heating BTU specs alongside cooling capacity across the best window air conditioners with heater.
How to choose the right one
Match BTU to room size
Check the BTU rating against your square footage. The Keystone 23,200 BTU unit covers 1,500 square feet, making it suitable for large open spaces. For smaller areas, the Midea 8,000 BTU model handles up to 350 square feet efficiently. Using a unit with too much power for a small room causes short cycling, while insufficient power struggles to maintain temperature. Always compare the stated coverage area in the specifications to your actual room dimensions.
Verify electrical voltage needs
Ensure your outlet matches the unit voltage. The ROVSUN 8,000 BTU Window AC operates on standard 115V power, fitting most homes. The OLMO 12,000 BTU Through-the-Wall model requires 230V, which is common in apartments or dedicated circuits. Plugging a 230V unit into a 115V outlet will not work, and using the wrong voltage can damage the equipment. Check the voltage specification before purchasing to avoid installation issues.
Choose remote or smart control
Decide between basic remote and app control. The TCL 14,000 BTU Wall-Mounted AC offers Wi-Fi app control and voice compatibility with Alexa. Most other models, like the ROVSUN 8,000 BTU, rely solely on a physical remote. Smart features allow you to adjust settings from your phone. If you prefer simplicity, a standard remote is sufficient. Check the control method in the specs to see if app integration is included.
Check installation type
Confirm if you need window or wall mounting. The Keystone 23,200 BTU unit is designed for window installation. The OLMO 8000 BTU Through-the-Wall AC requires a wall sleeve. The TCL 14,000 BTU is wall-mounted. Window units typically fit standard frames, while through-the-wall models need existing sleeves or new cutouts. Your installation method depends on your building structure. Review the mounting type in the product specifications to ensure compatibility.
Consider additional operating modes
Look beyond heating and cooling. The Frigidaire 8,000 BTU Window AC includes fan and dehumidifier modes for year-round use. The LG 18,000 BTU Window AC focuses primarily on heating. Dehumidifier modes help reduce moisture in humid weather. Fan-only mode circulates air without temperature change. Check the operating modes list to see if the unit offers versatility for different seasonal needs or humidity control.
Evaluate physical dimensions
Measure your opening space carefully. The LG 18,000 BTU Window AC measures 25.5 inches wide and 30.5 inches long. The Keystone 23,200 BTU model is uniquely compact at 10 inches in all dimensions. The ROVSUN 12,000 BTU Window AC is 19.8 inches wide. Ensure the unit fits your window frame or wall sleeve without blocking light or view. Compare the width, height, and length specs to your available space.
Frequently asked questions
Can a window AC with heat warm a large room?
Yes, but you need high capacity. The Keystone 23,200 BTU model covers 1,500 square feet. The LG 18,000 BTU unit handles spaces up to 1,000 square feet. Smaller 8,000 BTU units only cover 350 square feet. Choose based on your exact square footage to ensure effective heating.
Do I need a 230V outlet for these heaters?
It depends on the model. Units like the Midea 8,000 BTU and ROVSUN 8,000 BTU run on standard 115V power. Larger units, such as the OLMO 12,000 BTU and Keystone 23,200 BTU, require 230V outlets. Check your electrical setup before buying to avoid installation issues.
Which unit is best for a small bedroom?
The Midea 8,000 BTU Inverter Window AC is ideal. It covers 350 square feet and features quiet operation. The Frigidaire 8,000 BTU model also suits small rooms with quiet cooling and mild heat. Both fit standard window frames and provide efficient performance for compact spaces.
Are smart controls available on these window units?
Yes, several models include smart features. The TCL 14,000 BTU Wall-Mounted AC offers Wi-Fi app control and voice compatibility with Alexa. The ROVSUN 8000 BTU Smart Wall AC also includes smart app functionality. These units allow remote management without needing a separate hub.
Can I install these units through the wall instead of a window?
Some models are designed for through-the-wall installation. The OLMO 12,000 BTU and OLMO 8000 BTU units are built for this setup. The TCL 14,000 BTU is a wall-mounted option. Ensure you have the correct sleeve and voltage before choosing a through-the-wall model.
Do these heaters include dehumidifier modes?
Many models include dehumidifier functions alongside heating. The Midea 8,000 BTU, ROVSUN 12,000 BTU, and Keystone 23,200 BTU units all list dehumidifier modes. This feature helps manage moisture in the air while providing warmth, making the environment more comfortable during colder months.