9 Best Smart Window ACs With Heat Mode in 2026

This unit stands out for providing comprehensive heating and cooling in large spaces up to 1000 sq. ft., making it ideal for those seeking year-round climate control without multiple devices. Its smart Wi-Fi and Alexa compatibility allow remote operation, adding convenience. Compared with the TCL Q-Series, it offers a higher BTU capacity, but the 230V power requirement could limit compatibility in some homes. The quiet operation at 52dB makes it suitable for bedrooms and living areas, although its size and power draw mean higher energy use. Installation is straightforward with adjustable louvers and washable filters, yet window mounting may not suit all window types, and the high wattage raises energy concerns.

This unit excels in delivering energy-efficient heating and cooling for medium-sized rooms up to 550 sq. ft., making it ideal for budget-conscious users who value quiet performance. Its TCL Heat Pump technology achieves up to 67% energy savings in heating, outperforming less efficient models like the LG LW8023HRSM, which is better suited for smaller spaces. Smart control via app, voice, and remote adds flexibility, although actual performance can depend on room insulation and environmental factors. Its ultra-quiet operation makes it a good choice for bedrooms or quiet living areas, but the price point might be a consideration since the exact cost isn’t specified. Installation in standard window sizes is straightforward, and it offers precise temperature control.

This versatile 18000 BTU unit offers cooling, heating, dehumidification, and fan modes, making it suitable for large spaces up to 1000 sq. ft. Its WiFi and app control provide convenient remote operation, comparable to the 18000 BTU model with heat but with added dehumidification. It uses eco-friendly R32 refrigerant, which is a plus for environmentally conscious buyers. However, at 122.8 pounds, it’s quite heavy, and installation may require assistance. While its quiet operation at 52dB is comparable to other models, the weight and size could pose challenges for some users, and the cooling/heating coverage is often overestimated in some descriptions, so real-world performance should be monitored.

This 14,000 BTU model offers a solid balance of cooling, heating, and dehumidification for spaces up to 700 sq. ft., making it a practical choice for medium-sized rooms. Its smart control via app and remote enhances convenience. Compared with larger capacity units, it consumes less power—though with a wattage over 3500 W, it still demands significant energy. The noise level at 51dB is comparable to other units but may be noticeable in quiet environments. Its design is tailored for double-hung windows, simplifying installation without professional help, but this limits flexibility for different window types. The energy-saving modes are a plus for cost-conscious users who want reliable, in-room climate control.

The LG LW8023HRSM offers a compact solution for small rooms up to 330 sq. ft., combining cooling and heating in a sleek, smart package. Its ThinQ app and voice support via Alexa and Google Assistant make remote management simple, aligning it with other smart units like the TCL Q-Series but in a smaller capacity. While the dual BTU ratings—7,600 for cooling and 3,850 for heating—are enough for small spaces, they limit its effectiveness in larger rooms. The energy-saving modes add efficiency, but the limited coverage and the fact it’s a renewed product may raise concerns about longevity. Installation is standard for window units, but size constraints might limit compatibility with some window types.

This 8000 BTU model stands out for combining cooling, heating, dehumidifying, and fan modes in a single unit, making it ideal for small to medium rooms up to 350 sq. ft. Its smart WiFi control and voice compatibility with Alexa and Google Assistant add convenience that many simpler units lack. Compared with the Midea 12,000 BTU, it offers less cooling capacity but excels in energy efficiency and quieter operation. The inverter technology reduces power bills, though the unit’s weight of 81.4 pounds might pose installation challenges. Its limited to window installation, which could be restrictive for some users. Best for small households seeking reliable, all-season climate control with smart features. Not ideal for larger spaces or those preferring wall-mounted units.

• Provides versatile four-mode operation for all seasons
• Smart WiFi control with app and voice compatibility
• Energy-efficient inverter technology reduces electricity costs
• Easy to install with a mounting kit

• Heavy at over 80 pounds, requiring help during setup
• Noise level of 52 dB may be noticeable in very quiet environments
• Limited to window installation only

This 23200 BTU unit is designed for larger rooms up to 1500 sq. ft., offering powerful cooling and heating, along with dehumidifying and fan functions. Its high-capacity makes it more suitable for big living areas, unlike the smaller units like the ROVSUN 8000 BTU. The smart features, including WiFi control, app, and voice command, make it highly convenient, especially for busy households. The noise level of 52 dB remains manageable in most environments. However, its weight of over 140 pounds and window size requirements could make installation challenging for some. It’s not suited for smaller rooms or those needing portable solutions. Best for large living spaces or open-plan apartments needing smart, multi-functional climate control. Not ideal for small rooms or users with limited window sizes.

• High-capacity cooling and heating for large areas
• Smart WiFi, app, and voice control
• Quiet operation despite its size
• Multiple modes for year-round comfort

• Heavy weight complicates installation without help
• Requires verification of window dimensions before purchase

The Midea 12,000 BTU model offers a balanced blend of capacity and efficiency, suitable for spaces up to 550 sq. ft. Its inverter technology reduces energy use by up to 35%, making it appealing for budget-conscious buyers. Compared to the ROVSUN 8000 BTU, it provides more cooling power and includes a heat function that works down to 41°F, unlike the smaller units with limited heat operation. Its low noise of 45 dBA enhances comfort, especially in bedrooms. However, it requires a window width of 24 to 38.5 inches, which might not fit all setups. The heat pump’s limited cold-weather performance can be a drawback for those in colder climates. Overall, it fits well in medium-sized homes needing efficient, multi-season climate control. Best for homeowners seeking a reliable, energy-efficient unit with quiet operation. Not ideal for very cold climates or those with narrower windows.

• Multi-season operation with cooling and heating
• Energy-saving inverter technology
• Ultra-quiet at 45 dBA
• Smart controls via app and voice

• Heat pump doesn’t work below 41°F outside
• Limited to windows with specific size requirements

The ROVSUN 8000 BTU model offers balanced cooling and heating for spaces up to 350 sq. ft., making it an excellent choice for small apartments or offices. Its inclusion of a washable filter and simple installation kit adds convenience for DIY users. The smart control via app and voice with Alexa and Google Assistant enhances usability without extra cost. Compared with the B0HG1P26XV, it offers similar capacity but at a lower price point, though its 57 dB noise level might be more noticeable in quiet rooms. Its energy consumption of 730W is comparable, but the unit’s slightly louder operation could be a drawback for sensitive sleepers. This model suits budget-conscious buyers who prioritize smart features and easy setup. Best for small spaces needing straightforward smart climate control. Not ideal for larger rooms or those requiring ultra-quiet operation.

• Provides both cooling and heating in a compact unit
• Easy to install with included kit and instructions
• Smart control compatible with Alexa & Google Assistant
• Removable washable filter for low maintenance

• Noise level of 57 dB may be disruptive in very quiet environments
• Limited to rooms up to 350 sq ft

This LG model stands out for its seamless smart home integration and ultra-quiet operation, making it an excellent choice for tech-savvy users who prioritize convenience and minimal noise. Compared with the Midea U-shaped AC, LG’s WiFi control and compatibility with Alexa and Google Assistant are more versatile, though it lacks the innovative window-opening feature and energy savings of the Midea U. Its washable filter keeps maintenance simple, and its quiet operation suits bedrooms and offices. However, its focus on small room cooling limits its versatility, and Wi-Fi dependence means full smart features are unavailable without internet access.

This Midea model offers versatile functionality with cooling, dehumidifying, and fan modes, making it a smart choice for budget-conscious buyers who want more than just cooling. Compared to the GE model, it provides multiple modes and a quieter operation at 52dB, though it involves more complex installation requiring a screwdriver and may have a less intuitive control panel. Its energy-efficient features and remote control make daily adjustments straightforward, but it’s limited to small rooms, and some users may find the control layout less user-friendly.

This Midea U-shaped model excels for bedrooms and quiet spaces, thanks to its remarkably low noise level of 32 dBA. Its innovative design allows you to open your window for fresh air while still enjoying cooling, a feature absent from most competitors like the GE or LG units. It’s also Energy Star certified, promising up to 37% energy savings, which appeals to eco-conscious consumers. Its smart home compatibility with Alexa, Google Assistant, and Matter ensures modern convenience, but the specific window size requirements and limited room size make it less flexible for larger spaces. The sleek jet black finish may not match all decor styles.

This GE model provides precise cooling with its digital thermostat and remote, making it a solid pick for users who want straightforward controls and energy efficiency. Compared to the LG unit, it lacks smart Wi-Fi integration, but its eco mode and 24-hour timer give it better control over energy use, especially useful for small apartments or bedrooms. Its moderate noise level and easy DIY installation make it accessible, yet it doesn’t offer the smart home compatibility that more advanced models like the LG or Della units do. It’s a practical choice for those who prioritize control and energy savings over connectivity.

This Della unit combines smart WiFi control with dehumidification and fan modes, making it a versatile choice for small rooms up to 250 sq ft. Its energy efficiency rating of 11.0 CEER helps keep operating costs low, while Alexa compatibility offers convenient voice control. Compared to the LG or Midea units, Della’s multi-functionality and smart features make it more adaptable, though its slightly higher wattage and specific window size requirements could be drawbacks for some. Its low noise level at 51 dB is a plus for bedrooms or quiet spaces, but the installation process may be more involved due to window size constraints and setup complexity.

The LG LW6023IVSM stands out for integrating dual inverter technology, which reduces energy consumption by up to 40%, making it ideal for those seeking cost-efficient operation. Its ultra-quiet performance at only 44dB surpasses many competitors like the Windmill 6,000 BTU Lite, which operates at 51dB, but this comes with a higher price point and more complex installation requirements. The smart control via WiFi, LG ThinQ app, and voice assistants offers unmatched convenience for tech-savvy users. However, it’s limited to rooms up to 250 sq. ft. and requires compatible smart devices for remote operation. Overall, this model makes the most sense for buyers prioritizing quiet, energy-efficient, and connected operation, even if installation is slightly challenging.

The Windmill 6,000 BTU offers straightforward cooling with smart features suitable for budget-conscious buyers. It supports app and voice control, similar to the LG but without the inverter technology, which means it may consume more energy over time. Its effective airflow and antimicrobial filters provide good air quality for small spaces up to 250 sq. ft. The unit’s less complex setup and pre-assembled kit appeal to those who want quick installation, but it doesn’t include advanced energy-saving features or ultra-quiet operation. Compared to the LG, it’s more affordable but less energy-efficient. This pick makes the most sense for buyers needing reliable, connected cooling on a budget, aware that long-term energy costs might be higher.

The Windmill Lite is designed for small spaces like bedrooms or offices where space-saving and quiet operation matter most. It operates at 51dB, slightly louder than the more advanced models like the LG, but still suitable for sleeping areas. Its compact dimensions and lightweight design facilitate easy installation, especially for those who prefer a less intrusive unit. Smart connectivity options add convenience, but it lacks inverter technology, meaning it might not be as energy-efficient as premium models. Its limited cooling capacity makes it less suitable for larger rooms or spaces requiring more powerful cooling. This model makes sense for users prioritizing minimal footprint and quiet operation over advanced energy features.

The Frigidaire 6,000 BTU offers a straightforward cooling experience, focusing on reliable performance and easy remote control. While it lacks smart connectivity like the LG or Windmill, its quieter operation at 52dBA makes it suitable for bedrooms. The multiple fan speeds and modes, including Eco and Sleep, help tailor comfort while saving energy. Its washable filter simplifies maintenance, but it doesn’t support voice commands or app control, which may be a downside for those wanting integrated smart features. Compared to the Windmill, it offers more adjustable modes but at a similar price point. This model fits buyers who want dependable, quiet cooling with remote control but don’t require smart home integration.