10 Best Window Air Conditioners With Heat in 2026 for Year-Round Comfort

A window air conditioner with heat can provide practical year-round comfort without requiring a full HVAC installation. The right model depends on room size, electrical requirements, heating output, noise, and available features.

We compared 10 selected units ranging from compact 115V models to high-capacity 230V systems, including smart, inverter, dehumidifying, and multi-function options.

Best 10 Window Air Conditioner with Heat Picks for 2026

Best Quiet Smart Pick – Midea 8,000 BTU Window AC with Heat

The Midea 8,000 BTU window air conditioner with heat is a practical choice for rooms up to 350 square feet. Its inverter compressor, dehumidifier, app control, and low 45 dBA noise rating make it especially well suited to bedrooms, apartments, and workspaces. Note that the heat-pump function operates when outdoor temperatures are above 41°F.

Best For: Quiet, energy-conscious cooling and supplemental heat in rooms up to 350 square feet.

Pros:

• Inverter technology and Energy Star certification may help reduce energy use.
• Supports app, remote, panel, Alexa, and Google Assistant control.
• Offers cooling, heat, dry, fan, and auto modes with a 24-hour timer.
• Operates as quietly as 45 dBA.

Cons:

• Heat-pump operation is limited to outdoor temperatures above 41°F.
• Designed for double-hung windows with a 24- to 38.5-inch opening width and 14.5-inch vertical clearance.

Choose this model if quiet operation and smart-home convenience matter as much as basic heating and cooling. Its 350-square-foot coverage makes it better suited to smaller living spaces than large open rooms.

Best for Large Rooms – Keystone 18,800 BTU Window AC with Heat

The Keystone 18,800 BTU window air conditioner with heat is built for large spaces up to 1,000 square feet. It combines powerful cooling with 16,000 BTU supplemental heating, dehumidification, and fan circulation, while Energy Saver and Sleep modes provide ways to manage operation and energy use.

Best For: Large living rooms, apartments, and other spaces needing high-capacity cooling with supplemental heat.

Pros:

• High 18,800 BTU cooling capacity for spaces up to 1,000 square feet.
• Provides 16,000 BTU of supplemental heating.
• Includes cooling, heating, dehumidifying, and fan modes.
• I Sense remote measures room temperature where the remote is located.

Cons:

• Requires a 230V electrical connection.
• Supplemental heat is not intended as a primary heat source.
• Heating mode is specified for outdoor temperatures from 23°F to 76°F.

This Keystone is the strongest fit here for large rooms, but its electrical requirements and supplemental-heating limitation should be checked before purchase. Energy Saver and Sleep modes add useful operating flexibility.

Best Budget Smart Option – ROVSUN 8,000 BTU Window AC with Heat

The ROVSUN 8,000 BTU window air conditioner with heat offers four functions—cooling, heating, dehumidifying, and fan circulation—for rooms up to 350 square feet. Wi-Fi, app, Alexa, and Google Assistant compatibility add convenient control, while ECO mode and a 24-hour timer help tailor daily operation.

Best For: Smaller rooms where app and voice control are priorities.

Pros:

• Combines 8,000 BTU cooling with 4,000 BTU heating.
• Supports app, Alexa, and Google Assistant control.
• Includes five modes, three fan speeds, ECO mode, and a 24-hour timer.
• Installation parts and side panels are included.

Cons:

• Its 57 dBA noise rating is higher than the quietest model in this roundup.
• Uses a non-inverter compressor and has a listed SEER of 10.9.
• Window fit requirements should be checked carefully; listed minimum width is 23 inches and maximum width is 36 inches.

ROVSUN is a feature-rich option for a bedroom, office, or apartment room where connected controls are useful. It offers broad functionality at a smaller-room capacity, but buyers should confirm both window dimensions and noise expectations.

Best High-Capacity Choice – LG 23,000 BTU Window AC with Heat

The LG 23,000 BTU window air conditioner with heat is designed for cooling spaces up to 1,400 square feet. It includes 9,200/11,200 BTU supplemental heating, two fan speeds, remote control, washable filtration, and auto restart after a power interruption. Its 230V requirement and 145-pound weight make installation planning particularly important.

Best For: Large living rooms, dens, offices, and other spaces requiring maximum cooling capacity.

Pros:

• 23,000 BTU cooling capacity for spaces up to 1,400 square feet.
• Offers 9,200/11,200 BTU supplemental heat settings.
• Auto restart restores operation after a power failure.
• Includes remote control, washable filter, and filter-light reminder.

Cons:

• Requires a 230V connection.
• At 145 pounds, it may require extra help for installation.
• Its 62 dBA low-mode rating is louder than quieter compact options.

This LG model makes sense when room size demands substantial cooling power and supplemental heat is useful during cooler weather. Confirm the 230V circuit, window dimensions, and installation support before ordering.

Best Smart Inverter Pick – 8,000 BTU WiFi AC with Heat

If you want a window air conditioner with heat that also supports app and voice control, this ROVSUN model is a versatile choice for rooms up to 350 square feet. Its inverter compressor, cooling and heating modes, fan-only operation, and quiet sleep setting make it suitable for year-round room comfort.

Best For: Bedrooms, living rooms, offices, and smart-home users who want efficient remote temperature control.

Pros:

• Provides 8,000 BTU cooling and 8,400 BTU heating for spaces up to 350 square feet.
• Inverter technology is rated for 35% more energy savings than traditional units.
• Works with an app, remote, Alexa, and Google Assistant.
• Sleep-mode noise is rated at just 40 dB, with four-way airflow adjustment.

Cons:

• Requires a 24.5- to 36-inch-wide window with at least 14.5 inches of height.
• Cooling/ECO mode should not be used below 32°F, and heat mode should not be used below 5°F.

This is the most feature-rich option in the group, especially for shoppers prioritizing smart controls and quieter operation. Confirm the window dimensions and outdoor temperature limitations before buying.

Best for Everyday Use – LG 12,200 BTU Supplemental-Heat AC

For shoppers needing a window air conditioner with heat for a substantially larger room, this LG unit is rated to cool up to 570 square feet. It combines 12,200 BTU cooling with supplemental heat, electronic controls, a remote, and separate cooling, heating, and fan speeds.

Best For: Medium-sized rooms up to 570 square feet where higher cooling capacity and occasional supplemental heat are priorities.

Pros:

• 12,200 BTU cooling capacity is designed for rooms up to 570 square feet.
• Offers two cooling, two heating, and two fan speeds.
• Includes a washable filter, filter reminder, remote, and installation kit.
• Auto-restart turns the unit back on after power is restored.

Cons:

• Uses 230/208V power, so it may not suit standard 115V outlets.
• It is not an inverter model and is larger and heavier than the compact ROVSUN options.
• Heating is described as supplemental rather than a primary heating system.

The LG stands out for room coverage and adjustable operation, but its 230/208V electrical requirement is a key installation consideration. Check the available circuit and window measurements before ordering.

Best Simple 4-in-1 Value – 8,000 BTU AC, Heater, Dehumidifier & Fan

This ROVSUN window air conditioner with heat combines cooling, heating, dehumidifying, and fan modes in one 115V unit. Rated for rooms up to 350 square feet, it includes a remote, timer, ECO and automatic modes, and an installation kit for a practical all-season setup.

Best For: Compact bedrooms, offices, or apartments needing straightforward four-mode operation without smart-home features.

Pros:

• Combines 8,000 BTU cooling with a 4,000 BTU heating function.
• Includes cooling, heating, dehumidifier, and fan modes.
• Offers a 24-hour timer, ECO mode, automatic mode, and remote control.
• Uses a washable filter and includes mounting components and instructions.

Cons:

• Rated noise varies in the supplied specifications, with a listed low level of 52 dB and a detail rating of 57 dB.
• It is a non-inverter model with one listed power level.
• Requires a window at least 26 inches wide and 16 inches high.

This model is a practical choice when you want multiple comfort modes and conventional remote operation at 115V. Its larger minimum window opening and non-inverter design are worth checking against your space and energy priorities.

Best Compact Pick – LG 7,600 BTU Window AC with Heat

If you need a window air conditioner with heat for a bedroom, office, or similarly sized room, the LG LW8023HR offers cooling for spaces up to 330 square feet plus supplemental heat for cooler days. Its remote, timer, washable filter, and auto-restart feature add everyday convenience.

Best For: Bedrooms, offices, and medium rooms up to about 330 square feet where quieter operation and compact sizing matter.

Pros:

• Provides cooling and supplemental heating in one window unit.
• Operates as low as 52 dB on low mode.
• Includes a remote, 24-hour timer, washable filter, and auto restart.
• Uses two cooling, heating, and fan speeds for adjustable airflow.

Cons:

• Its 7,600 BTU cooling capacity is intended for smaller spaces than the larger models here.
• Supplemental heat is not presented as a replacement for a primary heating system.
• Requires a 115-volt electrical connection.

The LG is a practical choice when you want a relatively quiet heat-and-cool window unit without oversizing it for a bedroom or office. Confirm the window dimensions and electrical requirements before ordering.

Best Heavy-Duty Pick – Keystone 23,200 BTU Window AC with Heat

For a large space, this window air conditioner with heat combines 23,200 BTU cooling with 16,000 BTU of supplemental heat and a dehumidifier. The Keystone KSTHW25B is rated for rooms up to 1,500 square feet and includes a smart remote that measures the temperature where the remote is located.

Best For: Large rooms or open areas up to 1,500 square feet that need strong cooling, supplemental heat, and dehumidification.

Pros:

• Offers 23,200 BTU cooling capacity for large spaces.
• Adds 16,000 BTU of supplemental heating and dehumidification.
• Smart remote displays room temperature and sends updates to the unit.
• Includes Energy Saver and Sleep modes to help manage operation.

Cons:

• Requires a 230-volt connection.
• At 121 pounds, it is substantially heavier than the other listed models.
• Supplemental heating is intended for outdoor temperatures between 23 and 76 degrees and is not a primary heat source.

The Keystone is the strongest fit when coverage takes priority over compactness. Its large dimensions, weight, and 230-volt requirement make installation planning especially important, so verify the window opening and electrical service first.

Best 4-in-1 Value – ROVSUN 12,000 BTU Window AC with Heat

The ROVSUN RS-Window AC Heat-12K is a window air conditioner with heat designed for rooms up to 550 square feet. In addition to cooling and heating, it provides fan circulation and dehumidification, with an LED display, remote control, ECO mode, automatic mode, and a 24-hour timer.

Best For: Apartments, offices, and multipurpose rooms up to 550 square feet that benefit from four operating functions and adjustable controls.

Pros:

• Combines cooling, supplemental heating, dehumidifying, and fan modes.
• Rated for rooms up to 550 square feet.
• Includes a remote, LED display, ECO mode, automatic mode, and 24-hour timer.
• Comes with side panels and mounting parts for window installation.

Cons:

• Requires a 208/230-volt electrical connection.
• Reported noise is as low as 59 dB in the supplied product notes, while listed specifications also show 63 dB.
• The supplied notes list heating capacities of 11,000 and 9,000 BTU, so heating output is lower than its cooling capacity.

The ROVSUN offers a versatile middle ground for buyers who want more functions than basic cooling and heating. Check both the window measurements and voltage before purchase, particularly for apartment or office installations.

How We Picked the Best Window Air Conditioner with Heat

We evaluated the selected models by comparing cooling and supplemental-heating capacity, recommended room coverage, voltage requirements, operating modes, controls, efficiency-related features, and practical installation considerations. We also considered whether each unit includes useful extras such as dehumidification, fan-only operation, timers, remote controls, Wi-Fi, app support, or voice compatibility.

Because specifications vary by model and installation, treat stated square-foot coverage as a starting point rather than a guarantee. Sun exposure, ceiling height, insulation, window placement, and local climate can significantly affect performance.

Quick Comparison

Best For	What to Look For
Bedroom or small apartment	About 7,600–8,000 BTU, 115V operation, quiet or inverter design
Medium living room	Approximately 12,000 BTU and a clearly stated supplemental-heat rating
Large rooms or open layouts	18,800–23,200 BTU models, usually requiring 230V or 208V power
Smart-home convenience	Wi-Fi, app control, voice compatibility, and reliable remote operation

Key Buying Factors for a Window Air Conditioner with Heat

Cooling and Heating Capacity

Match BTU output to the room rather than automatically choosing the largest unit. Oversizing can reduce dehumidification and cause short cycling, while an undersized unit may run continuously. Remember that the heating function on many window units is supplemental, not a replacement for a dedicated furnace in very cold weather.

Voltage and Installation

Check the electrical requirements before ordering. Compact models commonly use a standard 115V outlet, while higher-capacity units may require 230V or 208V service and a suitable circuit. Confirm window dimensions, minimum and maximum opening sizes, support requirements, and whether the unit can be safely installed in your window type.

Efficiency, Noise, and Controls

Inverter compressors can adjust output more smoothly and may operate more quietly than conventional systems. Energy Star certification, programmable timers, sleep modes, washable filters, and effective thermostatic controls can also reduce running costs and improve comfort. For bedrooms, pay particular attention to published noise claims and fan-speed options.

Dehumidification and Seasonal Use

A built-in dehumidifier is useful in humid climates, especially during mild weather when full cooling is unnecessary. Consider whether you want independent fan, cooling, heating, and dry modes, and check how the unit handles condensate during both cooling and heating operation.

Who Should Buy Which Window Air Conditioner with Heat?

Choose a compact 115V model for a bedroom, home office, or smaller apartment room where simple installation matters. An inverter or smart model is especially appealing when quiet operation, lower cycling, and app-based scheduling are priorities.

For medium rooms, select a unit around 12,000 BTU after accounting for sunlight and insulation. Large living rooms, open-plan spaces, and oversized areas are better suited to the 18,800–23,200 BTU class, but these models demand compatible electrical service and more substantial installation support.

If winter comfort is the main reason for buying, compare supplemental-heating BTUs rather than relying only on the product title. For occasional shoulder-season warmth, most listed heat-pump or resistance-heating functions can be convenient; for sustained heating in freezing conditions, verify the manufacturer’s operating limits and consider a dedicated heating system.